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Ambaye TG, Hassani A, Vaccari M, Franzetti A, Prasad S, Formicola F, Rosatelli A, Rehman MZU, Mohanakrishna G, Ganachari SV, Aminabhavi TM, Rtimi S. Emerging technologies for the removal of pesticides from contaminated soils and their reuse in agriculture. CHEMOSPHERE 2024; 362:142433. [PMID: 38815812 DOI: 10.1016/j.chemosphere.2024.142433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2024] [Revised: 05/23/2024] [Accepted: 05/24/2024] [Indexed: 06/01/2024]
Abstract
Pesticides are becoming more prevalent in agriculture to protect crops and increase crop yields. However, nearly all pesticides used for this purpose reach non-target crops and remain as residues for extended periods. Contamination of soil by widespread pesticide use, as well as its toxicity to humans and other living organisms, is a global concern. This has prompted us to find solutions and develop alternative remediation technologies for sustainable management. This article reviews recent technological developments for remediating pesticides from contaminated soil, focusing on the following major points: (1) The application of various pesticide types and their properties, the sources of pesticides related to soil pollution, their transport and distribution, their fate, the impact on soil and human health, and the extrinsic and intrinsic factors that affect the remediation process are the main points of focus. (2) Sustainable pesticide degradation mechanisms and various emerging nano- and bioelectrochemical soil remediation technologies. (3) The feasible and long-term sustainable research and development approaches that are required for on-site pesticide removal from soils, as well as prospects for applying them directly in agricultural fields. In this critical analysis, we found that bioremediation technology has the potential for up to 90% pesticide removal from the soil. The complete removal of pesticides through a single biological treatment approach is still a challenging task; however, the combination of electrochemical oxidation and bioelectrochemical system approaches can achieve the complete removal of pesticides from soil. Further research is required to remove pesticides directly from soils in agricultural fields on a large-scale.
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Affiliation(s)
- Teklit Gebregiorgis Ambaye
- Department of Civil, Environmental, Architectural Engineering and Mathematics, University of Brescia, Via Branze 43, Brescia, 25123, Italy; Department of Environment and Resource Engineering, Technical University of Denmark, 2800, Lyngby, Denmark
| | - Aydin Hassani
- Department of Materials Science and Nanotechnology Engineering, Faculty of Engineering, Near East University, 99138 Nicosia, TRNC, Mersin 10, Turkey; Research Center for Science, Technology and Engineering (BILTEM), Near East University, 99138 Nicosia, TRNC, Mersin 10, Turkey
| | - Mentore Vaccari
- Department of Civil, Environmental, Architectural Engineering and Mathematics, University of Brescia, Via Branze 43, Brescia, 25123, Italy
| | - Andrea Franzetti
- Department of Earth and Environmental Sciences-DISAT, University of Milano-Bicocca, Piazza Della Scienza 1 Milano, 20126, Italy
| | - Shiv Prasad
- Division of Environment Science, ICAR-Indian Agricultural Research Institute New Delhi, 110012, India
| | - Francesca Formicola
- Department of Earth and Environmental Sciences-DISAT, University of Milano-Bicocca, Piazza Della Scienza 1 Milano, 20126, Italy
| | - Asia Rosatelli
- Department of Earth and Environmental Sciences-DISAT, University of Milano-Bicocca, Piazza Della Scienza 1 Milano, 20126, Italy
| | - Muhammad Zia Ur Rehman
- Institute of Soil and Environmental Sciences, University of Agriculture Faisalabad, 38040, Pakistan
| | - Gunda Mohanakrishna
- Center for Energy and Environment (CEE), School of Advanced Sciences, KLE Technological University, Hubballi, 580 031, India
| | - Sharanabasava V Ganachari
- Center for Energy and Environment (CEE), School of Advanced Sciences, KLE Technological University, Hubballi, 580 031, India
| | - Tejraj M Aminabhavi
- Center for Energy and Environment (CEE), School of Advanced Sciences, KLE Technological University, Hubballi, 580 031, India; Korea University, Seoul, South Korea.
| | - Sami Rtimi
- Global Institute for Water Environment and Health, 1210 Geneva, Switzerland.
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Seo C, Lee JW, Jeong JW, Kim TS, Lee Y, Gang G, Lee SG. Current technologies for heavy metal removal from food and environmental resources. Food Sci Biotechnol 2024; 33:287-295. [PMID: 38222907 PMCID: PMC10786761 DOI: 10.1007/s10068-023-01431-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 08/22/2023] [Accepted: 08/31/2023] [Indexed: 01/16/2024] Open
Abstract
Exposure to heavy metals in water and food poses a significant threat to human well-being, necessitating the efficient removal of these contaminants. The process of urban development exacerbates heavy metal pollution, thereby increasing risks to both human health and ecosystems. Heavy metals have the capacity to enter the food chain, undergo bioaccumulation and magnify, ultimately resulting in adverse effects on human health. Therefore, implementing effective pollution control measures and adopting sustainable practices are crucial for mitigating exposure and associated health risks. Various innovative approaches, including adsorption, ion exchange, and electrochemical technology, are currently being actively investigated to cope with the issue of heavy metal contamination. These innovative methods offer benefits such as efficient recycling, cost-effectiveness and environmental friendliness. In this review, we summarize recent advances for removing heavy metals from water, soil and food, providing valuable guidance for environmental engineers and researchers seeking to address contamination challenges.
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Affiliation(s)
- Chan Seo
- Department of Food Science and Nutrition, Pukyong National University, 45 Yongso-Ro, Nam-Gu, Busan, 48513 Republic of Korea
- Division of Natural Products Research, Honam National Institute of Biological Resource, Mokpo, 58762 Korea
| | - Joo Won Lee
- Department of Smart Green Technology Engineering, Pukyong National University, Busan, 48513 Korea
| | - Jin-Woo Jeong
- Division of Natural Products Research, Honam National Institute of Biological Resource, Mokpo, 58762 Korea
| | - Tae-Su Kim
- Division of Natural Products Research, Honam National Institute of Biological Resource, Mokpo, 58762 Korea
| | - Yoonmi Lee
- Food Safety and Processing Research Division, National Institute Fisheries Science, Busan, 46083 Korea
| | - Gyoungok Gang
- Department of Food Science and Nutrition, Pukyong National University, 45 Yongso-Ro, Nam-Gu, Busan, 48513 Republic of Korea
| | - Sang Gil Lee
- Department of Food Science and Nutrition, Pukyong National University, 45 Yongso-Ro, Nam-Gu, Busan, 48513 Republic of Korea
- Department of Smart Green Technology Engineering, Pukyong National University, Busan, 48513 Korea
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Sun Y, Teng Y, Zhao L, Li R, Ren W. Non-negligibly negative role of e-waste-derived pyrogenic carbon in the soil washing of copper and polybrominated diphenyl ethers. JOURNAL OF HAZARDOUS MATERIALS 2023; 458:131841. [PMID: 37331062 DOI: 10.1016/j.jhazmat.2023.131841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Revised: 06/05/2023] [Accepted: 06/10/2023] [Indexed: 06/20/2023]
Abstract
The open incineration of electrical and electronic waste (e-waste) results in the accumulation of pyrogenic carbon in the soil. However, the effect of the e-waste-derived pyrogenic carbon (E-PyC) on the performance of soil washing at e-waste incineration sites remains unclear. In this study, the effectiveness of a citrate-surfactant mixed solution in removing copper (Cu) and decabromodiphenyl ether (BDE209) at two e-waste incineration sites was evaluated. The removal efficiencies of Cu (24.6-51.3%) and BDE209 (13.0-27.9%) were low in both soils and were not significantly improved by ultrasonic. Soil organic matter analysis, hydrogen peroxide and thermal pretreatment experiments, and microscale soil particle characterization demonstrated that the poor removal of soil Cu and BDE209 was due to steric effects of E-PyC on the release of the solid fraction of pollutants and the competitive sorption of the labile fraction of pollutants by E-PyC. Weathering of soil Cu weakened the influence of E-PyC but strengthened the negative impact of natural organic matter (NOM) on soil Cu removal by promoting complexation between NOM and Cu2+ ions. This study demonstrates that the negative effect of E-PyC on Cu and BDE209 removal by soil washing is non-negligible, which has implications for decontaminating e-waste incineration sites by soil washing.
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Affiliation(s)
- Yi Sun
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ying Teng
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China; University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Ling Zhao
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ran Li
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Wenjie Ren
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China; University of Chinese Academy of Sciences, Beijing 100049, China
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Pouyamanesh S, Kowsari E, Ramakrishna S, Chinnappan A. A review of various strategies in e-waste management in line with circular economics. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:93462-93490. [PMID: 37572248 DOI: 10.1007/s11356-023-29224-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2022] [Accepted: 08/04/2023] [Indexed: 08/14/2023]
Abstract
Waste management of electrical and electronic equipment has become a key challenge for electronics manufacturers due to globalization and the rapid expansion of information technology. As the volume of e-waste grows, legal departments lack the infrastructure, technology, and ability to collect and manage it environmentally soundly. Government laws, economic reasons, and social issues are important considerations in e-waste management. The circular economy concept is built on reusing and recycling goods and resources. A novel idea called the circular economy might prevent the negative consequences brought on by the exploitation and processing of natural resources while also having good effects such as lowering the demand for raw materials, cutting down on the use of fundamental resources, and creating jobs. To demonstrate the significance of policy implementation, the necessity for technology, and the need for societal awareness to build a sustainable and circular economy, the study intends to showcase international best practices in e-waste management. This study uses circular economy participatory implementation methods to provide a variety of possible approaches to assist decision-makers in e-waste management. The purpose of this article is to review the most accepted methods for e-waste management to emphasize the importance of implementing policies, technology requirements, and social awareness in creating a circular economy. To conclude, this paper highlights the necessity of a common legal framework, reform of the informal sector, the responsibility of different stakeholders, and entrepreneurial perspectives.
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Affiliation(s)
- Soudabeh Pouyamanesh
- Department of Chemistry, Amirkabir University of Technology, No. 424, Hafez Avenue, Tehran, 1591634311, Iran
| | - Elaheh Kowsari
- Department of Chemistry, Amirkabir University of Technology, No. 424, Hafez Avenue, Tehran, 1591634311, Iran.
| | - Seeram Ramakrishna
- Department of Mechanical Engineering, Center for Nanofibers and Nanotechnology, National University of Singapore, Singapore, 119260, Singapore
| | - Amutha Chinnappan
- Department of Mechanical Engineering, Center for Nanofibers and Nanotechnology, National University of Singapore, Singapore, 119260, Singapore
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Liu J, Wu D, Tan X, Yu P, Xu L. Review of the Interactions between Conventional Cementitious Materials and Heavy Metal Ions in Stabilization/Solidification Processing. MATERIALS (BASEL, SWITZERLAND) 2023; 16:ma16093444. [PMID: 37176327 PMCID: PMC10179848 DOI: 10.3390/ma16093444] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 04/20/2023] [Accepted: 04/26/2023] [Indexed: 05/15/2023]
Abstract
In the past few decades, solidification/stabilization (S/S) technology has been put forward for the purpose of improving soil strength and inhibiting contaminant migration in the remediation of heavy metal-contaminated sites. Cement, lime, and fly ash are among the most common and effective binders to treat contaminated soils. During S/S processing, the main interactions that are responsible for improving the soil's behaviors can be summarized as gelification, self-hardening, and aggregation. Currently, precipitation, incorporation, and substitution have been commonly accepted as the predominant immobilization mechanisms for heavy metal ions and have been directly verified by some micro-testing techniques. While replacement of Ca2+/Si4+ in the cementitious products and physical encapsulation remain controversial, which is proposed dependent on the indirect results. Lead and zinc can retard both the initial and final setting times of cement hydration, while chromium can accelerate the initial cement hydration. Though cadmium can shorten the initial setting time, further cement hydration will be inhibited. While for mercury, the interference impact is closely associated with its adapted anion. It should be pointed out that obtaining a better understanding of the remediation mechanism involved in S/S processing will contribute to facilitating technical improvement, further extension, and application.
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Affiliation(s)
- Jingjing Liu
- School of Resource and Environmental Engineering, Hefei University of Technology, Hefei 230009, China
| | - Dongbiao Wu
- Anhui Urban Construction Design Institute Corp., Ltd., Hefei 230051, China
| | - Xiaohui Tan
- School of Resource and Environmental Engineering, Hefei University of Technology, Hefei 230009, China
| | - Peng Yu
- Anhui Urban Construction Design Institute Corp., Ltd., Hefei 230051, China
| | - Long Xu
- School of Resource and Environmental Engineering, Hefei University of Technology, Hefei 230009, China
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Sinha D, Datta S, Mishra R, Agarwal P, Kumari T, Adeyemi SB, Kumar Maurya A, Ganguly S, Atique U, Seal S, Kumari Gupta L, Chowdhury S, Chen JT. Negative Impacts of Arsenic on Plants and Mitigation Strategies. PLANTS (BASEL, SWITZERLAND) 2023; 12:plants12091815. [PMID: 37176873 PMCID: PMC10181087 DOI: 10.3390/plants12091815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Revised: 04/21/2023] [Accepted: 04/24/2023] [Indexed: 05/15/2023]
Abstract
Arsenic (As) is a metalloid prevalent mainly in soil and water. The presence of As above permissible levels becomes toxic and detrimental to living organisms, therefore, making it a significant global concern. Humans can absorb As through drinking polluted water and consuming As-contaminated food material grown in soil having As problems. Since human beings are mobile organisms, they can use clean uncontaminated water and food found through various channels or switch from an As-contaminated area to a clean area; but plants are sessile and obtain As along with essential minerals and water through roots that make them more susceptible to arsenic poisoning and consequent stress. Arsenic and phosphorus have many similarities in terms of their physical and chemical characteristics, and they commonly compete to cause physiological anomalies in biological systems that contribute to further stress. Initial indicators of arsenic's propensity to induce toxicity in plants are a decrease in yield and a loss in plant biomass. This is accompanied by considerable physiological alterations; including instant oxidative surge; followed by essential biomolecule oxidation. These variables ultimately result in cell permeability and an electrolyte imbalance. In addition, arsenic disturbs the nucleic acids, the transcription process, and the essential enzymes engaged with the plant system's primary metabolic pathways. To lessen As absorption by plants, a variety of mitigation strategies have been proposed which include agronomic practices, plant breeding, genetic manipulation, computer-aided modeling, biochemical techniques, and the altering of human approaches regarding consumption and pollution, and in these ways, increased awareness may be generated. These mitigation strategies will further help in ensuring good health, food security, and environmental sustainability. This article summarises the nature of the impact of arsenic on plants, the physio-biochemical mechanisms evolved to cope with As stress, and the mitigation measures that can be employed to eliminate the negative effects of As.
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Affiliation(s)
- Dwaipayan Sinha
- Department of Botany, Government General Degree College, Mohanpur 721436, Paschim Medinipur, West Bengal, India
| | - Soumi Datta
- Bioactive Natural Product Laboratory, School of Interdisciplinary Sciences and Technology, Jamia Hamdard, Hamdard Nagar, New Delhi 110062, India
| | - Reema Mishra
- Department of Botany, Gargi College, University of Delhi, New Delhi 110049, India
| | - Preeti Agarwal
- Department of Botany, Gargi College, University of Delhi, New Delhi 110049, India
| | - Tripti Kumari
- Department of Chemistry, Gargi College, University of Delhi, New Delhi 110049, India
| | - Sherif Babatunde Adeyemi
- Ethnobotany/Phytomedicine Laboratory, Department of Plant Biology, Faculty of Life Sciences, University of Ilorin, Ilorin PMB 1515, Kwara State, Nigeria
| | - Arun Kumar Maurya
- Department of Botany, Multanimal Modi College, Modinagar, Ghaziabad 201204, Uttar Pradesh, India
| | - Sharmistha Ganguly
- University Department of Botany, Ranchi University, Ranchi 834008, Jharkhand, India
| | - Usman Atique
- Department of Bioscience and Biotechnology, College of Biological Systems, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Sanchita Seal
- Department of Botany, Polba Mahavidyalaya, Polba 712148, West Bengal, India
| | - Laxmi Kumari Gupta
- Bioprocess Development Laboratory, Department of Biotechnology, National Institute of Technology Warangal, Warangal 506004, Telangana, India
| | - Shahana Chowdhury
- Department of Biotechnology, Faculty of Engineering Sciences, German University Bangladesh, TNT Road, Telipara, Chandona Chowrasta, Gazipur 1702, Bangladesh
| | - Jen-Tsung Chen
- Department of Life Sciences, National University of Kaohsiung, Kaohsiung 811, Taiwan
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Wang Y, Li Y, Yang S, Wang QH, Si SC, Mei HY, Liu GM, Pan XL, Luo YM. Removal of Cd from contaminated farmland soil by washing with residues of traditional Chinese herbal medicine extracts. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:31461-31470. [PMID: 36449237 DOI: 10.1007/s11356-022-24409-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Accepted: 11/22/2022] [Indexed: 06/17/2023]
Abstract
Soil washing is one of the effective methods for permanent removal of heavy metals from farmland soil, and selection of washing agents determines heavy metal removal efficiency. However, there is still a lack of cost-efficient and eco-friendly washing agents. In this study, three residues of traditional Chinese herbal medicine (RTCHM) extracts: residues of Prunus mume (Sieb.) Sieb. et Zucc. (RPM), residues of Schisandra chinensis (Turcz.) Baill. (RSC), and residues of Crataegus pinnatifida Bunge (RCP), were tested for their potential of Cd removal. The variations in amounts and compositions of dissolved organic carbon (DOC) and citric acid were responsible for the difference in Cd removal efficiencies of RTCHM extracts. Fourier-transform infrared spectrophotometer (FTIR) analysis showed that hydroxyl, carboxyl, and amine were the main functional groups of RTCHM extracts to chelate with heavy metals. The optimum conditions for RTCHM extracts were 100 g L-1 concentration, solid-liquid ratio 1:10, pH 2.50, and contact time of 1 h, and the highest Cd removal efficiencies of RPM, RSC, and RCP extracts reached 35%, 11%, and 15%, respectively. The ecological risk of Cd decreased significantly due to the decrease of exchangeable and reducible Cd fractions. RTCHM extracts washing alleviated soil alkalinity and had little effect on soil cation exchange capacity. Meanwhile, the concentrations of soil organic matter and nitrogen were enhanced significantly by RPM extracts and the activities of soil catalase and urease were also improved. Overall, among the tested extracts, RPM extracts was a much more feasible and environment-friendly washing agent for the remediation of Cd-contaminated farmland soil.
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Affiliation(s)
- Yi Wang
- Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Zhejiang University of Technology, Hangzhou, 310014, China
- CAS Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences (CAS), Nanjing, 210008, China
| | - Yuan Li
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Chinese Academy of Sciences (CAS), Shandong Key Laboratory, of Coastal Environment Process, YICCAS, Yantai Institute of Coastal Zone Research (YIC), Yantai, 264003, China
| | - Shuai Yang
- CAS Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences (CAS), Nanjing, 210008, China
| | - Qi-Hao Wang
- Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Zhejiang University of Technology, Hangzhou, 310014, China
- CAS Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences (CAS), Nanjing, 210008, China
| | - Shao-Cheng Si
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Chinese Academy of Sciences (CAS), Shandong Key Laboratory, of Coastal Environment Process, YICCAS, Yantai Institute of Coastal Zone Research (YIC), Yantai, 264003, China
| | - Han-Yi Mei
- Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Guo-Ming Liu
- CAS Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences (CAS), Nanjing, 210008, China
| | - Xiang-Liang Pan
- Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Yong-Ming Luo
- CAS Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences (CAS), Nanjing, 210008, China.
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Chinese Academy of Sciences (CAS), Shandong Key Laboratory, of Coastal Environment Process, YICCAS, Yantai Institute of Coastal Zone Research (YIC), Yantai, 264003, China.
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Guo X, Gao Y, Han W, Zhao G, Zhang G, Liu D. Effect of multiple washing operations on the removal of potentially toxic metals from an alkaline farmland soil and the strategy for agricultural reuse. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:739-751. [PMID: 35902529 DOI: 10.1007/s11356-022-22126-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Accepted: 07/16/2022] [Indexed: 06/15/2023]
Abstract
Few studies have carried out soil washing experiments using pot experiments to simulate in situ soil washing operations, particularly for alkaline soils. This study explored the effects of multiple washing operations using pot experiments on the removal efficiencies of potentially toxic metals (PTM) from alkaline farmland soil and the reuse strategy of washed soil for safe agricultural production. The results showed that the removal efficiencies of Cd, Pb, Cu, and Zn after seven washings with a mixed chelator (EDTA, GLDA, and citric acid) were 41.1%, 47.1%, 14.7%, and 26.5%, respectively, which was close to the results of the EDTA treatment. For the alkaline soil studied, the second washing with the mixed chelators most effectively removed PTM owing to the activation of them after the first washing operation. The mixed chelator more effectively increased the proportion of stable fraction of PTM and maintained soil nutrients (e.g., nitrogen content) than EDTA, indicating little disturbance of alkaline soil quality after washing with the mixed chelator. After the amendment of the washed soil, there was no visible difference in the biomass weight of crops from the soils washed with different agents, indicating that the inhibitory effect of both washing agents on plant growth was effectively alleviated. The Cd and Pb contents in Z. mays were below the threshold of Hygienical Standard for Feeds of China (GB 13078-2017) (1 and 30 mg·kg-1). Moreover, after three cropping operations, the available concentrations of PTM in the soil washed with the mixed chelator were lower than those in the soil washed with EDTA, indicating the value and potential of agricultural reuse of alkaline farmland soil washed with the mixed chelator.
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Affiliation(s)
- Xiaofang Guo
- School of Environment and Resources, Taiyuan University of Science and Technology, Taiyuan, 030024, Shanxi Province, China
| | - Yu Gao
- School of Environment and Resources, Taiyuan University of Science and Technology, Taiyuan, 030024, Shanxi Province, China
| | - Wei Han
- School of Environment and Resources, Taiyuan University of Science and Technology, Taiyuan, 030024, Shanxi Province, China
| | - Guohui Zhao
- School of Environment and Resources, Taiyuan University of Science and Technology, Taiyuan, 030024, Shanxi Province, China
| | - Guixiang Zhang
- School of Environment and Resources, Taiyuan University of Science and Technology, Taiyuan, 030024, Shanxi Province, China.
| | - Dandan Liu
- School of Environment and Resources, Taiyuan University of Science and Technology, Taiyuan, 030024, Shanxi Province, China
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Hussain T, Ahmed SR, Lahori AH, Mierzwa-Hersztek M, Vambol V, Khan AA, Rafique L, Wasia S, Shahid MF, Zengqiang Z. In-situ stabilization of potentially toxic elements in two industrial polluted soils ameliorated with rock phosphate-modified biochars. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 309:119733. [PMID: 35820570 DOI: 10.1016/j.envpol.2022.119733] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2022] [Revised: 07/03/2022] [Accepted: 07/04/2022] [Indexed: 06/15/2023]
Abstract
The present study was aimed at determining the efficacy of rock phosphate (RP) 3% loaded in a green coconut shell, chicken manure, and vegetable waste to make green coconut-modified biochar (GMB), chicken manure modified-biochar (CMB), and vegetable waste-modified biochar (VMB) in the fixation of Cr, Pb, Cu, Zn, Ni, and Cd in Sharafi goth and Malir polluted soils. The impact of RP impregnated with organic waste material to produce modified biochars (MBs) on stabilizing PTEs from polluted soils and reducing their uptake by mustard plant has not yet been thoroughly investigated. All modified BCs in 0.5, 1, and 2% doses were used to stabilize Cr, Pb, Cu, Zn, Ni, and Cd in two polluted soils and to reduce their uptake by the mustard plant. The obtained results revealed that the maximum mustard fresh biomass was 17.8% higher with GMB 1% in Sharafi goth polluted soil and 25% higher with VMB 0.5% in Malir polluted soil than in the control treatment. After applying modified BCs, immobilization of Cr, Pb, Cu, Ni, and Cd was observed in both soils and it reduced the uptake of these elements by mustard plants. On the other hand, although Zn mobilization increased by 0.38% for CMB 0.5% and by 5.9% for VMB 0.5% in Sharafi goth polluted soil, as well as by 3.15% for GMB 1%, 6.34% for GMB 2%, and 4.78% for VMB 0.5% in Malir polluted soil, this was due to changes in soil pH and OM. It was found that GMB 1%, CMB 0.5%, and VMB 0.5% have the potential to increase Zn uptake by mustard, while VMB 2% can reduce the element uptake by the plant. Redundancy analysis showed that soil chemical parameters were negatively correlated with PTEs in both soils and reduced their uptake by mustard. The present study revealed that MBs can stabilize PTEs in industrial and wastewater soils polluted with multiple metals and reduce their uptake by plants.
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Affiliation(s)
- Tanveer Hussain
- Department of Environmental Sciences, Sindh Madressatul Islam University, Karachi, 74000, Pakistan
| | - Samreen Riaz Ahmed
- Department of English, Sindh Madressatul Islam University, Karachi, 74000, Pakistan
| | - Altaf Hussain Lahori
- Department of Environmental Sciences, Sindh Madressatul Islam University, Karachi, 74000, Pakistan.
| | - Monika Mierzwa-Hersztek
- Department of Agricultural and Environmental Chemistry, University of Agriculture in Krakow, al. Mickiewicza 21, 31-120, Krakow, Poland
| | - Viola Vambol
- Department of Environmental Engineering and Geodesy, University of Life Sciences in Lublin, Lublin, Poland; Department of Applied Ecology and Environmental Sciences, National University «Yuri Kondratyuk Poltava Polytechnic», Poltava, Ukraine
| | - Asif Ali Khan
- Department of Environmental Sciences, Sindh Madressatul Islam University, Karachi, 74000, Pakistan
| | - Lubna Rafique
- Department of Environmental Sciences, Sindh Madressatul Islam University, Karachi, 74000, Pakistan
| | - Sajid Wasia
- Department of Environmental Sciences, Sindh Madressatul Islam University, Karachi, 74000, Pakistan
| | - Muhammad Faizan Shahid
- Department of Environmental Sciences, Sindh Madressatul Islam University, Karachi, 74000, Pakistan
| | - Zhang Zengqiang
- College of Natural Resources and Environment, Northwest A & F University, Yangling, Shaanxi, 712100, China
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10
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Yang S, Li Y, Liu GM, Si SC, Zhu X, Tu C, Li LZ, Luo YM. Sequential washing and eluent regeneration with agricultural waste extracts and residues for facile remediation of meta-contaminated agricultural soils. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 835:155548. [PMID: 35489479 DOI: 10.1016/j.scitotenv.2022.155548] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 04/22/2022] [Accepted: 04/22/2022] [Indexed: 06/14/2023]
Abstract
Washing with organic acids and dissolved organic carbon (DOC) is a promising technique for effective removal of potentially toxic metals from agricultural soils and the two key factors are the screening of inexpensive, high-efficiency, and environmentally friendly washing agents and the safe treatment of waste eluent. We used extracts from agro-forestry wastes (pineapple peel, lemon peel, grapefruit peel and gardening crabapple fruit) to develop a facile two-stage sequential washing method (extracts and/or citric acid (CA) and coupled with extracts) and regenerated waste eluent. The washing efficiencies of Cd and Cu were significantly increased by pineapple peel (PP) using two-stage sequential washing with the sequence of PP + CA-PP > CA-PP > PP-PP. The potential pollution risk from soil Cd was lowered by 33.0% from moderate to low risk, and soil nutrient contents increased. 80.9% of Cd and 81.3% of Cu in waste eluent were efficiently removed by the PP residues. The removal mechanisms of metals in soils and eluents by PP washing agents and residues can be attributed to acid activation, cation exchange and complexation between metal ions and carboxyl groups. Therefore, the PP extracts and residues are potentially suitable for the removal of Cd and Cu from polluted agricultural soils and washing waste eluents.
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Affiliation(s)
- Shuai Yang
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of Sciences (CAS); Shandong Key Laboratory of Coastal Environmental Processes, YICCAS, Yantai, Shandong 264003, China; University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Yuan Li
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of Sciences (CAS); Shandong Key Laboratory of Coastal Environmental Processes, YICCAS, Yantai, Shandong 264003, China
| | - Guo-Ming Liu
- CAS Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences (CAS), Nanjing 210008, China
| | - Shao-Cheng Si
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of Sciences (CAS); Shandong Key Laboratory of Coastal Environmental Processes, YICCAS, Yantai, Shandong 264003, China; University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Xia Zhu
- CAS Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences (CAS), Nanjing 210008, China
| | - Chen Tu
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of Sciences (CAS); Shandong Key Laboratory of Coastal Environmental Processes, YICCAS, Yantai, Shandong 264003, China
| | - Lian-Zhen Li
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of Sciences (CAS); Shandong Key Laboratory of Coastal Environmental Processes, YICCAS, Yantai, Shandong 264003, China
| | - Yong-Ming Luo
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of Sciences (CAS); Shandong Key Laboratory of Coastal Environmental Processes, YICCAS, Yantai, Shandong 264003, China; CAS Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences (CAS), Nanjing 210008, China; University of the Chinese Academy of Sciences, Beijing 100049, China.
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11
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Wang X, Fernandes de Souza M, Li H, Qiu J, Ok YS, Meers E. Biodegradation and effects of EDDS and NTA on Zn in soil solutions during phytoextraction by alfalfa in soils with three Zn levels. CHEMOSPHERE 2022; 292:133519. [PMID: 34995634 DOI: 10.1016/j.chemosphere.2022.133519] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 12/07/2021] [Accepted: 12/31/2021] [Indexed: 06/14/2023]
Abstract
In chelator-enhanced Zn phytoremediation studies, it is crucial to understand how the degradable chelators and the competition from other ions influence the concentration of Zn in soil solutions. This study investigated the biodegradability of two chelators (EDDS: Ethylenediamine-N,N'-disuccinic acid, and NTA: Nitrilotriacetic acid) and their effects on the Zn concentration in the soil solution during the growth of alfalfa (Medicago Sativa L.). The chelators were added at four doses (0, 0.5, 2 and 5 mmol kg-1) in soils with varying Zn levels (189, 265 and 1496 mg kg-1). The results showed that the lag phase before EDDS and NTA biodegradation varied from 0 to 7 days in the three soils. EDDS and NTA were completely decomposed within the assessed 57 days regardless of the applied dosage, with a half-life of 1.3-3.0 days in highly Zn-contaminated soil and 4.2-10.8 days in the two other soils. In soil solutions, the change in solubilized Zn was in line with EDDS and NTA degradation kinetics. Cu, Al, Fe and Mn were the main metal ions that competed against Zn for chelation. Besides, Ni competed with Zn in the whole process. Ca did not compete effectively in the three soils, while Mg was a competitor only at the initial stage. Our results show the importance of considering both the biodegradation rate and the competition between the target cation and other elements present in the soil when using chelators to enhance phytoremediation. A 30-day explorative incubation experiment is recommended to evaluate the appropriate application time of chelators and the target Zn exposure time for plants during phytoremediation.
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Affiliation(s)
- Xiaolin Wang
- Department of Green Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Coupure links 653, 9000, Ghent, Belgium.
| | - Marcella Fernandes de Souza
- Department of Green Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Coupure links 653, 9000, Ghent, Belgium
| | - Haichao Li
- Department of Environment, Ghent University, Coupure links 653, 9000, Ghent, Belgium
| | - Jing Qiu
- Department of Green Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Coupure links 653, 9000, Ghent, Belgium
| | - Yong Sik Ok
- Korea Biochar Research Center, APRU Sustainable Waste Management & Division of Environmental Science and Ecological Engineering, Korea University, Seoul, 02841, Republic of Korea
| | - Erik Meers
- Department of Green Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Coupure links 653, 9000, Ghent, Belgium
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12
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Yang S, Li Y, Si S, Liu G, Yun H, Tu C, Li L, Luo Y. Feasibility of a combined solubilization and eluent drainage system to remove Cd and Cu from agricultural soil. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 807:150733. [PMID: 34606870 DOI: 10.1016/j.scitotenv.2021.150733] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Revised: 09/28/2021] [Accepted: 09/28/2021] [Indexed: 06/13/2023]
Abstract
Washing using low-molecular-weight organic acid is an effective and eco-friendly technique to permanently remove heavy metals from soil. There is still lack of evaluation of the application modes and the recovery methods, as well as the variations of heavy metal and nutrients fractions on a pilot-scale during washing. Here, we developed a simple combined solubilization and eluent drainage system in a pilot-scale washing box using industrial grade citric acid with feasible waste eluent treatment method to remove cadmium (Cd) and copper (Cu) from agricultural soil. The removal rates of Cd and Cu after sequential two-stage citric acid-water washing reach up 68.9% and Cu 41.4%, which was 7.5% and 10.0% higher than single citric acid. The removed the heavy metals were mainly in exchangeable and reducible fractions. The heavy metals at different soil depth were dissolved more effectively by citric acid-water washing with wheat straw as underdrain filling material than that of crushed stone. The potential risks of Cd in soils all decreased by approximately 75% from considerable to low risk. The two-stage citric acid-water washing significantly mitigated the effect of soil acidification. The average contents of soil organic matter, available ammonium N-NH4 and available phosphorus increased by 40.9%, 57.3%, 32.0% after citric acid-water washing under wheat straw filling. The waste eluent can be efficiently recovered by clam powder, which removed 78.7% of Cd and 57.5% of Cu. The regenerated citric acid showed similar removal efficiencies for Cd and Cu compared to the fresh citric acid. These results indicate that the combination of washing, drainage and flocculation can effectively remove Cd and Cu from contaminated agricultural soil and realize the recycling of waste eluent.
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Affiliation(s)
- Shuai Yang
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of Sciences (CAS), Yantai 264003, PR China; University of the Chinese Academy of Sciences, Beijing 100049, PR China; Shandong Key Laboratory of Coastal Environmental Processes, YICCAS, Yantai 264003, PR China
| | - Yuan Li
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of Sciences (CAS), Yantai 264003, PR China; Shandong Key Laboratory of Coastal Environmental Processes, YICCAS, Yantai 264003, PR China
| | - Shaocheng Si
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of Sciences (CAS), Yantai 264003, PR China; University of the Chinese Academy of Sciences, Beijing 100049, PR China; Shandong Key Laboratory of Coastal Environmental Processes, YICCAS, Yantai 264003, PR China
| | - Guoming Liu
- CAS Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences (CAS), Nanjing 210008, PR China
| | - Hao Yun
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of Sciences (CAS), Yantai 264003, PR China; University of the Chinese Academy of Sciences, Beijing 100049, PR China; Shandong Key Laboratory of Coastal Environmental Processes, YICCAS, Yantai 264003, PR China
| | - Chen Tu
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of Sciences (CAS), Yantai 264003, PR China; Shandong Key Laboratory of Coastal Environmental Processes, YICCAS, Yantai 264003, PR China
| | - Lianzhen Li
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of Sciences (CAS), Yantai 264003, PR China; Shandong Key Laboratory of Coastal Environmental Processes, YICCAS, Yantai 264003, PR China
| | - Yongming Luo
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of Sciences (CAS), Yantai 264003, PR China; CAS Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences (CAS), Nanjing 210008, PR China; University of the Chinese Academy of Sciences, Beijing 100049, PR China; Shandong Key Laboratory of Coastal Environmental Processes, YICCAS, Yantai 264003, PR China.
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13
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Ju W, Duan C, Liu L, Jin X, Bravo-Ruiseco G, Mei Y, Fang L. Reduction of Cu and nitrate leaching risk associated with EDDS-enhanced phytoextraction process by exogenous inoculation of plant growth promoting rhizobacteria. CHEMOSPHERE 2022; 287:132288. [PMID: 34555581 DOI: 10.1016/j.chemosphere.2021.132288] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Revised: 09/13/2021] [Accepted: 09/17/2021] [Indexed: 05/09/2023]
Abstract
Biodegradable chelant (S,S)-N,N'-ethylenediaminedisuccinic acid (EDDS) has the more advantages of enhanced metal mobility, rapid degradation, environmental friendliness, and ammonium release. However, the risk of metal and/or nitrate residues and leaching within EDDS biodegradation remains as the bottleneck for the widespread application of EDDS-induced phytoremediation. This study aims to explore if the inoculation of plant growth-promoting rhizobacteria (PGPRs) can eliminate the risk associated with the short-term application of EDDS by investigating Cu phytoextraction and soil nitrate content. Results showed that EDDS application significantly increased the copper (Cu) concentration in shoots, soil total Cu, NH4+-N and NO3--N content, but decreased plant biomass. The inoculation of PGPRs in the soil showed a strong ability to increase plant biomass, Cu phytoextraction and soil NH4+-N content, and decrease soil Cu and NO3--N content. Moreover, bacterial dominant taxa were found to be the largest contributors to soil NH4+-N and NO3--N variation, and the abundance of denitrifying bacteria (Bacteroidetes and Stenotrophomonas) decreased in the treatment with PGPRs. The risk of residual Cu and nitrate leaching was reduced by the inoculation of PGPRs without significantly changing the stability of the bacterial community. These new findings indicate that the exogenous application of beneficial rhizobacteria can provide an effective strategy to reduce the risk in metal-contaminated soils of chelant-assisted phytoextraction.
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Affiliation(s)
- Wenliang Ju
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling, 712100, China; School of Environment, Tsinghua University, Beijing, 100084, China
| | - Chengjiao Duan
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling, 712100, China
| | - Lei Liu
- Department of Medical Microbiology and Infection Prevention, University of Groningen, University Medical Center Groningen, Hanzeplein 1, 9713, GZ, Groningen, the Netherlands
| | - Xiaolian Jin
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling, 712100, China
| | - Gabriela Bravo-Ruiseco
- Department of Medical Microbiology and Infection Prevention, University of Groningen, University Medical Center Groningen, Hanzeplein 1, 9713, GZ, Groningen, the Netherlands
| | - Yuxia Mei
- College of Life Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China
| | - Linchuan Fang
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling, 712100, China; CAS Center for Excellence in Quaternary Science and Global Change, Chinese Academy of Sciences, Xi'an, 710061, China.
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14
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Application of Soil Washing and Thermal Desorption for Sustainable Remediation and Reuse of Remediated Soil. SUSTAINABILITY 2021. [DOI: 10.3390/su132212523] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Global governance of soil resources as well as revitalizations and remediation of degraded areas seem to be necessary actions for sustainable development. A great deal of effort has gone into developing remediation technologies to remove or reduce the impact of these contaminants in the environment. However, contaminated soil remediations in stringent conditions deteriorate soil properties and functions and create the need for efficient soil revitalization measures. Soil washing (SW) and thermal desorption (TD) are commonly used to remediate contaminated soil and can significantly reduce the contaminant, sometimes to safe levels where reuse can be considered; however, the effects of treatment on soil quality must be understood in order to support redevelopment after remediation. In this review, we discussed the effects of SW and TD on soil properties, including subsequent soil quality and health. Furthermore, the importance of these techniques for remediation and reclamation strategies was discussed. Some restoration strategies were also proposed for the recovery of soil quality. In addition, remediated and revitalized soil can be reused for various purposes, which can be accepted as an implementation of sustainable remediation. This review concludes with an outlook of future research efforts that will further shift SW and TD toward sustainable remediation.
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15
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Zhong Q, Zhang S, Pan X, Wang G, Xu X, Li T, Zhou W, He Y, Luo L, Liu Y, Long L. Efficiency and comprehensive risk assessment of soil Pb and Cd by washing technique with three biodegradable eluents. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:61811-61824. [PMID: 34184233 DOI: 10.1007/s11356-021-15037-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Accepted: 06/17/2021] [Indexed: 06/13/2023]
Abstract
Soil washing with environmentally friendly eluents is a rapid remediation technique for farmland polluted by heavy metals. In this study, polyepoxysuccinic acid (PESA), ethylenediamine tetra (methylene phosphonic acid) sodium (EDTMPS), and phosphonyl carboxylic acid copolymer (POCA) were applied to remedy paddy and arid soils polluted by Pb and Cd. At the same time, ethylenediaminetetraacetic acid (EDTA) was used as a control eluent. PESA showed comparable removal of soil Pb and Cd (over 80.0%) with EDTA, and EDTMPS and POCA removed two heavy metals by 35.2-50.3%. For labile fractions, PESA significantly removed Pb by 93.5-96.7% and Cd by 84.9-90.3% in two soils. EDTMPS and POCA removed Pb by 75.5-85.8% in two soils, while they only removed Cd by 11.7-42.2% in paddy soil, and 76.3-81.7% in arid soil. The risks of total heavy metal concentrations were reduced from the high risk to low risk in paddy soil, and to considerable risk in arid soil, while only dropped to considerable or even had no change by EDTMPS and POCA leaching. The risks of the two soils reduced from high to low or considerable level after PESA washing based on labile fraction change, and to considerable or high level after EDTMPS and POCA leaching, respectively. Therefore, PESA is an ecological benefit eluent for remediating the farmland polluted by heavy metals, and the risk assessment based on labile fraction more easily identifies the dynamic change of heavy metal during the washing process.
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Affiliation(s)
- Qinmei Zhong
- College of Environmental Sciences, Sichuan Agricultural University, Chengdu, 611130, China
| | - Shirong Zhang
- College of Environmental Sciences, Sichuan Agricultural University, Chengdu, 611130, China.
| | - Xiaomei Pan
- College of Environmental Sciences, Sichuan Agricultural University, Chengdu, 611130, China
| | - Guiyin Wang
- College of Environmental Sciences, Sichuan Agricultural University, Chengdu, 611130, China
| | - Xiaoxun Xu
- College of Environmental Sciences, Sichuan Agricultural University, Chengdu, 611130, China
| | - Ting Li
- College of Resources, Sichuan Agricultural University, Chengdu, 611130, China
| | - Wei Zhou
- College of Resources, Sichuan Agricultural University, Chengdu, 611130, China
| | - Yan He
- College of Environmental Sciences, Sichuan Agricultural University, Chengdu, 611130, China
| | - Ling Luo
- College of Environmental Sciences, Sichuan Agricultural University, Chengdu, 611130, China
| | - Yan Liu
- College of Environmental Sciences, Sichuan Agricultural University, Chengdu, 611130, China
| | - Lulu Long
- College of Environmental Sciences, Sichuan Agricultural University, Chengdu, 611130, China
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16
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Wang Z, Shen R, Ji S, Xie L, Zhang H. Effects of biochar derived from sewage sludge and sewage sludge/cotton stalks on the immobilization and phytoavailability of Pb, Cu, and Zn in sandy loam soil. JOURNAL OF HAZARDOUS MATERIALS 2021; 419:126468. [PMID: 34186429 DOI: 10.1016/j.jhazmat.2021.126468] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Revised: 05/27/2021] [Accepted: 05/28/2021] [Indexed: 06/13/2023]
Abstract
Co-pyrolysis of sewage sludge and straws has been used to improve the pore structure and reduce the ecological risks of heavy metals in sewage sludge-derived biochars. However, to date, no study has focused on the effects of biochar derived from sewage sludge/straws on the immobilization and phytoavailability of heavy metals in soil. Here, we studied the effects of biochar derived from sewage sludge/cotton stalks (SCB) and that derived from sewage sludge alone (SSB) on the remediation of sandy loam soil contaminated by Pb, Cu, and Zn. SCB amendment decreased the bioavailable forms of Pb, Cu, and Zn in the soil by 19.0%, 34.9%, and 18.2%, respectively, and reduced their accumulation in ryegrass by 28.6%, 50.1%, and 30.0%, respectively, compared with those by SSB amendment. Furthermore, SCB amendment transformed more metals from the acid-soluble fraction to the oxidizable fraction than SSB amendment, indicating that complexation played a more critical role in SCB amendment than in SSB amendment. Both biochar amendments effectively improved soil water holding capacity, increased the supply of available P, N, and K, and promoted ryegrass growth. The findings of this study show the benefits of SCB over SSB for the remediation of heavy metal-contaminated soil.
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Affiliation(s)
- Zhipu Wang
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum-Beijing at Karamay, Karamay 834000, China.
| | - Rong Shen
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum-Beijing at Karamay, Karamay 834000, China.
| | - Shibo Ji
- School of Chemical and Environmental Engineering, China University of Mining & Technology (Beijing), Beijing 100083, China.
| | - Like Xie
- Experimental Testing Institute of Petro China Xinjiang Oilfield Company, Karamay 834000, China.
| | - Haibing Zhang
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum-Beijing at Karamay, Karamay 834000, China.
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17
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Niu H, Wang Z, Song J, Long A, Cao M, Luo J. Cadmium subcellular distribution and chemical form in Festuca arundinacea in different intercropping systems during phytoremediation. CHEMOSPHERE 2021; 276:130137. [PMID: 33721629 DOI: 10.1016/j.chemosphere.2021.130137] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Revised: 02/10/2021] [Accepted: 02/26/2021] [Indexed: 06/12/2023]
Abstract
Intercropping with Cicer arietinum L has been suggested to improve the Cd decontamination capacity of Festuca arundinacea. However, the mechanisms stimulating this effect have not been revealed. The current study was designed to evaluate the changes in the subcellular distribution and chemical forms of Cd in different leaf types of F. arundinacea intercropped with C. arietinum L under different schemes. The results indicated that more than half of the Cd was bound in the cell wall in plant organs under all planting schemes, showing that cell wall deposition is an important detoxication pathway for the metal. Relative to the monoculture scheme, coordinate and malposed intercropping schemes increased the Cd concentration deposited in the cytoplasm of below-ground tissues from 37.6% to 45.2% and 45.1%, respectively. Additionally, the proportion of inorganic and water-soluble Cd in the below-ground parts of F. arundinacea increased from 73.6% in the monoculture scheme to 80.6% and 84.7%, in the coordinate and malposed intercropping schemes, respectively. The results exhibited that intercropping schemes can activate the metal in below-ground tissues and move it to aerial parts. The present study revealed the promoting mechanism of intercropping schemes on the phytoremediation efficiency of F. arundinacea for Cd at a subcellular level.
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Affiliation(s)
- Hong Niu
- Key Laboratory of Resources Conversion and Pollution Control of the State Ethnic Affairs Commission, College of Resources and Environmental Science, South-Central University for Nationalities, Wuhan, 430074, PR China
| | - Zhengli Wang
- College of Resources and Environment, Yangtze University, Wuhan, China
| | - Jinnuo Song
- College of Resources and Environment, Yangtze University, Wuhan, China
| | - Aogui Long
- College of Resources and Environment, Yangtze University, Wuhan, China
| | - Min Cao
- University of Leicester, University Road, Leicester, LE1 7RH, United Kingdom
| | - Jie Luo
- College of Resources and Environment, Yangtze University, Wuhan, China.
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18
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Niu H, Bian C, Long A, Wang Z, Cao M, Luo J. Impacts of root pruning and magnetized water irrigation on the phytoremediation efficiency of Celosia argentea. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 211:111963. [PMID: 33493728 DOI: 10.1016/j.ecoenv.2021.111963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2020] [Revised: 01/05/2021] [Accepted: 01/19/2021] [Indexed: 06/12/2023]
Abstract
Pot experiments were conducted to evaluate the effects of magnetized water irrigation (100 mT) and root cutting (three pruning intensities) on phytoremediation efficiency of Celosia argentea. In the absence of magnetic field treatment, low root cutting intensity increased the dry weight of the below-ground and aerial parts of C. argentea. Moderate and severe cutting intensities decreased the biomass yield of the plant roots by 11.3% and 31.0%, and increased the dry weight of aerial parts by 75.9% and 27.6%, respectively, alleviating the detrimental effects of these pruning treatments on the plant roots. In the presence of magnetic field treatment, 10% and 25% of pruning treatments increased the dry weight of plant roots by 52.1% and 33.8%, and 33% pruning treatment decreased it by 14.1%. Under both irrigation treatments, low and moderate root cutting strategies did not affect the take up of Cd by the plant roots, while severe cutting decreased it significantly. Enzyme activities decreased with the increment of pruning intensity, and magnetic field can alleviate the negative impact, increasing the capacity of the root pruned species to scavenge the excessive ROS induced by the accumulated Cd. The results showed that root pruning enhanced the phytoremediation efficiency of C. argentea, and this effect was enhanced when combined with magnetized water irrigation.
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Affiliation(s)
- Hong Niu
- College of Resources and Environmental Science, Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education & Hubei Key Laboratory of Catalysis and Materials Science, South-Central University for Nationalities, Wuhan, China
| | - Cuijie Bian
- College of Resources and Environment, Yangtze University, Wuhan, China
| | - Aogui Long
- College of Resources and Environment, Yangtze University, Wuhan, China
| | - Zhengli Wang
- College of Resources and Environment, Yangtze University, Wuhan, China
| | - Min Cao
- University of Leicester, University Road, Leicester LE1 7RH, United Kingdom
| | - Jie Luo
- College of Resources and Environment, Yangtze University, Wuhan, China.
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19
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Wang X, Fernandes de Souza M, Li H, Tack FMG, Ok YS, Meers E. Zn phytoextraction and recycling of alfalfa biomass as potential Zn-biofortified feed crop. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 760:143424. [PMID: 33223175 DOI: 10.1016/j.scitotenv.2020.143424] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Revised: 10/14/2020] [Accepted: 10/20/2020] [Indexed: 06/11/2023]
Abstract
Zn is an essential micronutrient for living organisms and, in that capacity, it is added to animal feed in intensive livestock production to promote growth and eliminate diseases. Alfalfa (Medicago sativa L.) may have the potential to compensate and substitute the need for chemical Zn additives in feeds as a Zn-biofortified feed crop when grown on Zn-enriched soils. Thus, this possibility was investigated with a greenhouse experiment using three soils with Zn concentrations (mg kg-1) of 189 (soil A), 265 (soil B) and 1496 (soil C). Ethylenediamine-N,N'-disuccinate acid (EDDS) and Nitrilotriacetic acid (NTA) at different rates (0 as control, 0.5, 2 and 5 mmol kg-1) were applied as soil additives to enhance the phytoextraction efficiency of alfalfa. The results showed that Zn was highly transferable in alfalfa tissues in the three soils even without additives. EDDS was more effective than NTA in enhancing Zn phytoextraction by alfalfa. The maximum Zn accumulation in the third cutting shoots was obtained with the EDDS concentration of 5 mmol kg-1 in soil A and of 2 mmol kg-1 in soil B, with a 462% and 162% increase compared with controls, respectively. However, the higher EDDS concentration resulted in a significant reduction in biomass production. In soil C, all EDDS concentrations resulted in similar Zn accumulations in the third shoot. To improve the phytoextraction efficacy of Zn while minimizing its phytotoxicity on alfalfa, the rate of 2 mmol kg-1 EDDS proved to be optimal for soil B, and 0.5 mmol kg-1 EDDS for soils A and C. Findings suggest that phytoextraction of Zn-enriched soil can be combined with Zn biofortification, thus allowing to recycle Zn into biomass that can, to an extent, substitute Zn feed additives. This study provided a primary data set for the combination of Zn-biofortification and Zn-phytoextraction.
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Affiliation(s)
- Xiaolin Wang
- Department of Green Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Coupure links 653, 9000 Ghent, Belgium.
| | - Marcella Fernandes de Souza
- Department of Green Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Coupure links 653, 9000 Ghent, Belgium
| | - Haichao Li
- Department of Environment, Ghent University, Coupure links 653, 9000 Ghent, Belgium
| | - Filip M G Tack
- Department of Green Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Coupure links 653, 9000 Ghent, Belgium
| | - Yong Sik Ok
- Korea Biochar Research Center, APRU Sustainable Waste Management & Division of Environmental Science and Ecological Engineering, Korea University, Seoul 02841, Republic of Korea
| | - Erik Meers
- Department of Green Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Coupure links 653, 9000 Ghent, Belgium
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Tang A, Lu Y, Li Q, Zhang X, Cheng N, Liu H, Liu Y. Simultaneous leaching of multiple heavy metals from a soil column by extracellular polymeric substances of Aspergillus tubingensis F12. CHEMOSPHERE 2021; 263:127883. [PMID: 32829220 DOI: 10.1016/j.chemosphere.2020.127883] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Revised: 07/20/2020] [Accepted: 07/30/2020] [Indexed: 06/11/2023]
Abstract
The use of the biological agents for leaching heavy metals from contaminated soils is a very promising method that is both efficient and eco-friendly. In this study, a fungus Aspergillus tubingensis F12 was reported to possess a strong adsorption capacity for various heavy metal ions and shown to adsorb 90.8% Pb, 68.4% Zn, 64.5% Cr, 13.1% Cu, 12.9% Ni, and 6.9% Cd in aqueous solution. As extracellular polymeric substance (EPS) was found to play a leading role in the adsorption of metal ions, we applied EPS as a leaching agent to simultaneously remove six metals from soil in a column leaching experiment. The flow rate, initial solution pH, initial EPS concentration, and ionic strength were investigated using response surface methodology. The minimum and maximum metal leaching capacities were determined to be 0.089 mg/g and 3.703 mg/g, respectively. Verified by Fourier transform infrared spectroscopy, scanning electron microscope energy dispersive X-ray spectroscopy, and X-ray photoelectron spectroscopy, we made the preliminary deductions that ion exchange determines the leaching capacity limit and that biosorption plays a large role in reaching that limit. Additionally, the redox behaviour of Cu produced more carboxyl groups, which increased the adsorption of heavy metals. The ecological impact of this method was also examined; we found that the influences of leaching with EPS on soil properties and microbial community structure were slight. Therefore, the reported leaching process might have application prospects for metal removal from soil.
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Affiliation(s)
- Aixing Tang
- College of Chemistry and Chemical Engineering, Guangxi University, Nanning, 530004, China; Key Laboratory of Guangxi Biorefinery, Guangxi University, Nanning, 530003, China
| | - Yuhao Lu
- College of Chemistry and Chemical Engineering, Guangxi University, Nanning, 530004, China
| | - Qingyun Li
- College of Chemistry and Chemical Engineering, Guangxi University, Nanning, 530004, China; Key Laboratory of Guangxi Biorefinery, Guangxi University, Nanning, 530003, China
| | - Xianglu Zhang
- College of Chemistry and Chemical Engineering, Guangxi University, Nanning, 530004, China
| | - Ning Cheng
- College of Chemistry and Chemical Engineering, Guangxi University, Nanning, 530004, China
| | - Haibo Liu
- College of Chemistry and Chemical Engineering, Guangxi University, Nanning, 530004, China
| | - Youyan Liu
- College of Chemistry and Chemical Engineering, Guangxi University, Nanning, 530004, China; Key Laboratory of Guangxi Biorefinery, Guangxi University, Nanning, 530003, China.
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21
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Beiyuan J, Fang L, Chen H, Li M, Liu D, Wang Y. Nitrogen of EDDS enhanced removal of potentially toxic elements and attenuated their oxidative stress in a phytoextraction process. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 268:115719. [PMID: 33007598 DOI: 10.1016/j.envpol.2020.115719] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Revised: 08/31/2020] [Accepted: 09/20/2020] [Indexed: 06/11/2023]
Abstract
(S,S)-ethylenediaminedisuccinic acid (EDDS) has a strong capacity to mobilize potentially toxic elements (PTEs) in phytoextraction. It can release NH4+-N via biodegradation, which can enhance N supply to soil thereafter promote plant growth and plant resistance to PTEs. However, the advanced feature of released N in the EDDS-enhanced phytoextraction remains unclear. In the current study, the effects of N supply released from EDDS on ryegrass phytoextraction and plant resistance to PTEs were investigated in detail by a comparison with urea. Our results supported that the addition of both EDDS and urea increased N concentration in soil solution, yet EDDS needed more time to release available N for plant uptake and transported more N from root to shoot. Additionally, EDDS significantly increased the concentration of all targeted PTEs, i.e. Cu, Zn, Cd, and Pb, in the soil solution, which results in higher levels of their occurrence in plant biomass compared with urea. By contrast, the supply of N slightly enhanced the ryegrass uptake of micro-nutrients, i.e. Cu and Zn, yet it caused negligible effects on nonessential elements, i.e. Cd and Pb. The mobilized PTEs by EDDS lead to elevated oxidative stress because higher levels of malondialdehyde and O2•- were observed. The supply of N attenuated oxidative stress caused by O2•- and H2O2, which was associated with enhanced activities of superoxide dismutase and peroxidase. Our results advanced the understanding of the exogenous N supply and metal resistance mechanisms in the EDDS-enhanced phytoextraction. This study also highlighted that EDDS can serve as a N source to ease N-deficient problems in PTEs-contaminated soils.
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Affiliation(s)
- Jingzi Beiyuan
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Northwest A&F University, Yangling, 712100, China; School of Environment and Chemical Engineering, Foshan University, Foshan, 528000, China
| | - Linchuan Fang
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Northwest A&F University, Yangling, 712100, China; CAS Center for Excellence in Quaternary Science and Global Change, Xi'an, 710061, China.
| | - Hansong Chen
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Northwest A&F University, Yangling, 712100, China; College of Xingzhi, Zhejiang Normal University, Jinhua, 321000, China
| | - Mengdi Li
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Northwest A&F University, Yangling, 712100, China
| | - Dongdong Liu
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Northwest A&F University, Yangling, 712100, China
| | - Yunqiang Wang
- State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment CAS, Xi'an, 710061, China; Department of Earth and Environmental Sciences, Xi'an Jiaotong University, Xi'an, 710049, China
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22
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Bidast S, Golchin A, Baybordi A, Zamani A, Naidu R. The effects of non-stabilised and Na-carboxymethylcellulose-stabilised iron oxide nanoparticles on remediation of Co-contaminated soils. CHEMOSPHERE 2020; 261:128123. [PMID: 33113646 DOI: 10.1016/j.chemosphere.2020.128123] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Revised: 08/22/2020] [Accepted: 08/25/2020] [Indexed: 06/11/2023]
Abstract
A pot experiment was carried out to evaluate the efficiency of six types of non-stabilised and Na-carboxymethylcellulose (CMC)-stabilised iron oxide nanoparticles (α-FeOOH, α-Fe2O3, and Fe3O4) on the immobilisation of cobalt (Co) in a soil spiked with different concentrations of it (5, 25, 65, 125, 185 mg kg-1). Amendments were added to soil samples at the rate of 0.5%, and the samples incubated for 60-days. The addition of amendments significantly decreased the concentrations of DTPA-Co and MgCl2-Co, compared with the unamended control. The highest decrease in concentration of DTPA-Co and MgCl2-Co was obtained by the application of CMC-stabilised Fe3O4 (MC) when the concentration of soil total Co was low (5 and 25 mg kg-1) and by the use of CMC-stabilised α-FeOOH (GC) when the concentration of soil total Co was high (65, 125, and 185 mg kg-1), as compared to the control. CMC-stabilised iron oxide nanoparticles were more effective than non-stabilised nanoparticles in the immobilisation of Co. To investigate the effectiveness of iron oxide amendments on the chemical species of Co in the soil spiked with 65 mg kg-1 of this metal, sequential extraction was performed. The concentration of EXCH (exchangeable) and CARB (carbonate) bound fractions decreased significantly after treatment by different amendments. In particular, GC reduced the concentration of EXCH and CARB bound fractions by 20.87, and 17.52%, respectively, compared with the control. Also amendments significantly increased the concentration of FeMn-OX (Fe-Mn oxides), and OM (organic matter) bound, and RES (residual) fractions.
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Affiliation(s)
- Solmaz Bidast
- Soil Science Department, Faculty of Agriculture, University of Zanjan, Zanjan, Iran.
| | - Ahmad Golchin
- Soil Science Department, Faculty of Agriculture, University of Zanjan, Zanjan, Iran.
| | - Ahmad Baybordi
- Soil and Water Research Department, East Azerbaijan Agricultural and Natural Resources Research and Education Center, AREEO, Tabriz, Iran.
| | - Abbasali Zamani
- Department of Environmental Science, Faculty of Science, University of Zanjan, Zanjan, Iran.
| | - Ravi Naidu
- Global Centre for Environmental Remediation (GCER), Faculty of Science, The University of Newcastle, University Drive, Callaghan, NSW, 2308, Australia; Cooperative Research Centre for Contamination Assessment and Remediation of the Environment (CRC CARE), ATC Building, The University of Newcastle, University Drive, Callaghan, NSW, 2308, Australia.
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23
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Kaurin A, Gluhar S, Tilikj N, Lestan D. Soil washing with biodegradable chelating agents and EDTA: Effect on soil properties and plant growth. CHEMOSPHERE 2020; 260:127673. [PMID: 32693264 DOI: 10.1016/j.chemosphere.2020.127673] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Revised: 07/06/2020] [Accepted: 07/08/2020] [Indexed: 06/11/2023]
Abstract
Soils contaminated with Pb, Zn and Cd are hazardous. Persistent EDTA and biodegradable GLDA, EDDS and IDS have been used as chelators in the ReSoil soil washing technology, which recycles chelator and curbs toxic emissions. The washed soils supported similar growth of buckwheat (F. esculentum) and better growth of Chinese cabbage (B. rapa) compared with the original (not-remediated) soil. The growth of buckwheat on EDDS-washed soil was an exception and was 67% suppressed. The activities of enzymes of the plant antioxidant preventive system were assessed in roots and leaves of Chinese cabbage on all soils. Similar activities were measured, confirming that washed soils are not harmful to the plants. Plant uptake of potentially toxic elements was reduced from all washed soils, i.e. buckwheat grown on GLDA-washed soils accumulated up to 27 and 83 times less Pb and Cd than in the original soil. The initial Pb emissions in leachate from GLDA and IDS washed soils were up to 89 and 92% higher than those of the original soil, respectively. The latter emissions ceased to the levels measured in original, EDTA and EDDS washed soils. Soil physical properties (water holding capacity, aggregate stability) and soil functionality, assessed as soil respiration and activity of enzymes indicative for soil C, N and P cycle, were similar in all soils after 10 weeks of plant growth experiment. The overall results indicate a low impact of the remediation on soil quality. Soils washed with EDTA performed slightly better compared to GLDA-, EDDS- and IDS-washed soils.
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Affiliation(s)
- Anela Kaurin
- Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, 1000, Ljubljana, Slovenia
| | - Simon Gluhar
- Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, 1000, Ljubljana, Slovenia; Envit Ltd., Trzaska Cesta 330, 1000, Ljubljana, Slovenia
| | - Natasha Tilikj
- Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, 1000, Ljubljana, Slovenia
| | - Domen Lestan
- Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, 1000, Ljubljana, Slovenia; Envit Ltd., Trzaska Cesta 330, 1000, Ljubljana, Slovenia.
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24
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Zhao YP, Cui JL, Chan TS, Chen YH, Li XD. Mechanistic insight into the interactions of EDDS with copper in the rhizosphere of polluted soils. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 267:115453. [PMID: 33254714 DOI: 10.1016/j.envpol.2020.115453] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Revised: 07/25/2020] [Accepted: 08/15/2020] [Indexed: 06/12/2023]
Abstract
The biodegradable S,S-ethylenediaminedisuccinic acid (EDDS) is a promising chelant for chelant-assisted phytoextraction of trace metals in polluted soil. The interactions between EDDS and trace metals/major elements in the soil affect the metal bioavailability and their subsequent phytoextraction efficiency. This study aimed to investigate the macroscopic and molecular-level interactions of EDDS with Cu in the rhizosphere and non-rhizosphere of a Cu-polluted agricultural soil. A multi-interlayer rhizobox planted with ryegrass was used to simulate the transport of EDDS and Cu from the non-rhizosphere to rhizosphere soils. The results showed that EDDS (5 mM kg-1) significantly dissociated Cu (285-690 fold), Fe (by 3.47-60.2 fold), and Al (2.43-5.31 fold) from the soil in comparison with a control group. A combination of micro-X-ray fluorescence, X-ray absorption near-edge structure spectroscopy, and sequential extraction analysis revealed that EDDS primarily chelated the adsorbed fraction of Cu by facilitating the dissolution of goethite. Moreover, as facilitated by ryegrass transpiration, CuEDDS was moved from the non-rhizosphere to rhizosphere and accumulated in ryegrass. In situ processes of Cu extraction and transport by EDDS in the rhizosphere were further elucidated with chemical speciation analysis and geochemical modeling methods.
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Affiliation(s)
- Yan-Ping Zhao
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong
| | - Jin-Li Cui
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong; Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China
| | - Ting-Shan Chan
- National Synchrotron Radiation Research Center, 101 Hsin-Ann Road, Hsinchu Science Park, Hsinchu, 30076, Taiwan
| | - Ya-Hua Chen
- College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Xiang-Dong Li
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong.
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25
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Wei X, Zhou Y, Jiang Y, Tsang DCW, Zhang C, Liu J, Zhou Y, Yin M, Wang J, Shen N, Xiao T, Chen Y. Health risks of metal(loid)s in maize (Zea mays L.) in an artisanal zinc smelting zone and source fingerprinting by lead isotope. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 742:140321. [PMID: 32721712 DOI: 10.1016/j.scitotenv.2020.140321] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Revised: 06/13/2020] [Accepted: 06/16/2020] [Indexed: 06/11/2023]
Abstract
Metal(loid) contamination caused by industrial activities in agricultural soils has become a universal environmental and food safety concern. This study revealed the contamination, pathway, and source contribution of metal(loid)s such as lead (Pb), zinc (Zn) and cadmium (Cd) in maize and soils in different residential areas impacted by long-term historical artisanal zinc smelting activities from Southwest China. Results revealed that the soils were contaminated heavily by metals like Pb, Zn and Cd, with contents of 40-14,280, 150-47,020 and 1.28-61.7 mg/kg, respectively. Hazard quotients of food uptake for Pb, Cd and Cr in maize grains were extremely high for residents, in particular for the children. To trace the sources of metal health risk, lead isotope fingerprinting and binary mixing modeling were applied. It indicated that the anthropogenic activities contributed over 80% to the Pb contamination in maize grains. The findings highlighted warning levels of health risks to the residents in consuming maize grains in the historical artisanal PbZn smelting area. Therefore, an effective strategy including pollution source control and remediation measures must be taken to improve the soil quality and guarantee food safety around the historical smelting areas likewise.
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Affiliation(s)
- Xudong Wei
- Institute of Environmental Research at Greater Bay, Key Laboratory of Water Quality and Conservation in the Pearl River Delta, Ministry of Education, and School of Environmental Science and Engineering, Guangzhou University, 510006 Guangzhou, China
| | - Yuting Zhou
- Institute of Environmental Research at Greater Bay, Key Laboratory of Water Quality and Conservation in the Pearl River Delta, Ministry of Education, and School of Environmental Science and Engineering, Guangzhou University, 510006 Guangzhou, China
| | - Yanjun Jiang
- Institute of Environmental Research at Greater Bay, Key Laboratory of Water Quality and Conservation in the Pearl River Delta, Ministry of Education, and School of Environmental Science and Engineering, Guangzhou University, 510006 Guangzhou, China
| | - Daniel C W Tsang
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
| | - Chaosheng Zhang
- International Network for Environment and Health, School of Geography and Archaeology & Ryan Institute, National University of Ireland, Galway, Ireland
| | - Juan Liu
- Institute of Environmental Research at Greater Bay, Key Laboratory of Water Quality and Conservation in the Pearl River Delta, Ministry of Education, and School of Environmental Science and Engineering, Guangzhou University, 510006 Guangzhou, China; Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China.
| | - Yuchen Zhou
- Institute of Environmental Research at Greater Bay, Key Laboratory of Water Quality and Conservation in the Pearl River Delta, Ministry of Education, and School of Environmental Science and Engineering, Guangzhou University, 510006 Guangzhou, China
| | - Meiling Yin
- Institute of Environmental Research at Greater Bay, Key Laboratory of Water Quality and Conservation in the Pearl River Delta, Ministry of Education, and School of Environmental Science and Engineering, Guangzhou University, 510006 Guangzhou, China
| | - Jin Wang
- Institute of Environmental Research at Greater Bay, Key Laboratory of Water Quality and Conservation in the Pearl River Delta, Ministry of Education, and School of Environmental Science and Engineering, Guangzhou University, 510006 Guangzhou, China; Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resources, Guangzhou 510006, China.
| | - Nengping Shen
- State Key Laboratory of Ore Deposit Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China
| | - Tangfu Xiao
- Institute of Environmental Research at Greater Bay, Key Laboratory of Water Quality and Conservation in the Pearl River Delta, Ministry of Education, and School of Environmental Science and Engineering, Guangzhou University, 510006 Guangzhou, China
| | - Yongheng Chen
- Institute of Environmental Research at Greater Bay, Key Laboratory of Water Quality and Conservation in the Pearl River Delta, Ministry of Education, and School of Environmental Science and Engineering, Guangzhou University, 510006 Guangzhou, China
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26
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Joon NK, Ek P, Zevenhoven M, Hupa L, Miró M, Bobacka J, Lisak G. On-line microcolumn-based dynamic leaching method for investigation of lead bioaccessibility in shooting range soils. CHEMOSPHERE 2020; 256:127022. [PMID: 32445998 DOI: 10.1016/j.chemosphere.2020.127022] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Revised: 05/06/2020] [Accepted: 05/07/2020] [Indexed: 06/11/2023]
Abstract
In this work, a miniaturized flow-through leaching test is presented for rapid screening of potential chemical extractants to explore the bioaccessibility of lead (Pb) in contaminated shooting range soils in Valkeala, Finland. The method combines the versatility of microcolumn-based extraction methods with on-line inductively coupled plasma optical emission spectrometry (ICP OES) analysis for expedient assessment of the magnitude of the bioaccessible pools and the leaching kinetics of lead from polluted soils under variable physicochemical scenarios. Acids and salt solutions were studied as potential extractants. The efficiency of the extractants relative to the initial total amount of lead in the soil sample (509 ± 21 mg/kg) were found to increase in the following order: 0.11 M acetic acid (55%) < 1 M MgCl2 (58%) < 0.1 M NH2OH·HCl (61%) < 0.1 M citric acid (93%) < 0.1 M HCl (96%). The proposed on-line microcolumn-based method was further explored for implementation of the modified BCR (now termed Standards, Measurements and Testing Programme, SM&T) sequential extraction procedure to avail the information about different fractions available in the solid sample, and validated by mass balance calculations. The equivalent sequential procedure in a batch format was then studied and compared against the on-line microcolumn extraction method. The on-line dynamic extraction system presented in this work accepts a substantial amount of sample (2.5 g) as compared to previous flow-through mini-column setups (generally accommodating < 0.25 g of sample), thus maintaining sample representativeness and fostering comprehension of the extraction patterns for non-homogenous soil materials. The use of cotton buds and Teflon membranes and holders in the microcolumn setup facilitates the repeatable flow-through leaching of trace elements and restrict formation of preferential channels. Monitoring of the leachable trace elements in real time delivers detailed insight into the ongoing extraction process and provides a time-saving assessment of potential chemical extractants.
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Affiliation(s)
- Narender Kumar Joon
- Johan Gadolin Process Chemistry Centre, Laboratory of Molecular Science and Engineering, Åbo Akademi University, Biskopsgatan 8, FI-20500, Åbo-Turku, Finland
| | - Paul Ek
- Johan Gadolin Process Chemistry Centre, Laboratory of Molecular Science and Engineering, Åbo Akademi University, Biskopsgatan 8, FI-20500, Åbo-Turku, Finland
| | - Maria Zevenhoven
- Johan Gadolin Process Chemistry Centre, Laboratory of Molecular Science and Engineering, Åbo Akademi University, Biskopsgatan 8, FI-20500, Åbo-Turku, Finland
| | - Leena Hupa
- Johan Gadolin Process Chemistry Centre, Laboratory of Molecular Science and Engineering, Åbo Akademi University, Biskopsgatan 8, FI-20500, Åbo-Turku, Finland
| | - Manuel Miró
- FI-TRACE Group, Department of Chemistry, University of the Balearic Islands, Carretera de Valldemossa km 7.5, Palma de Mallorca, Balearic Islands, 07122, Spain
| | - Johan Bobacka
- Johan Gadolin Process Chemistry Centre, Laboratory of Molecular Science and Engineering, Åbo Akademi University, Biskopsgatan 8, FI-20500, Åbo-Turku, Finland
| | - Grzegorz Lisak
- School of Civil and Environmental Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore; Nanyang Environment and Water Research Institute, Residues and Resources Reclamation Center, 1 Cleantech Loop, CleanTech One, Singapore 637141, Singapore.
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27
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Hazrati S, Farahbakhsh M, Heydarpoor G, Besalatpour AA. Mitigation in availability and toxicity of multi-metal contaminated soil by combining soil washing and organic amendments stabilization. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 201:110807. [PMID: 32505762 DOI: 10.1016/j.ecoenv.2020.110807] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Revised: 05/16/2020] [Accepted: 05/23/2020] [Indexed: 06/11/2023]
Abstract
In order to investigate the decrease in total metal contents and to mitigate the availability and toxicity of metals from farmland near a lead mining area, a combination of two effective soil washing and eco-friendly stabilization technologies was applied in current research. The pre-treatment was performed with three types of agents including Ethylenediaminetetraacetic acid (EDTA), citric acid (CA), and mixture of hydroxylamine hydrochloride and citric acid (HA)) and the post-treatment stabilization was adopted using four rich-carbon organic waste amendments (cow manure compost (CMC), vermicompost (VC), urban sewage sludge (SS), and sludge-derived biochar (BIO)). Furthermore, the fate of residual metals (leachability, plant-availability, bioaccessibility, and chemical distribution), soil quality indicators (phytotoxicity and enzyme activities), and some soil physicochemical properties were examined before and after the two-steps remediation. The soil washing, especially using HA and CA agents, dramatically increased the labile metals and negatively changed the soil microbial activity. The two-month stabilization with SS, BIO, and VC resulted in a significant control of the leachability and plant-availability of residual Zn and Pb. However, the post-treatment was only slightly immobilized of Cd. The amendments affected the restoration of soil pH and organic carbon as well as the improvement of available nutrients. Compared to the other amendments that caused restrictions, the SS significantly restored the enzyme activities. With the exception of CMC, the SS, VC, and BIO, indicated higher germination rate and growth of wheat were also obtained. This study reveal the ability of the complementary role of stabilization with soil washing to reduce metal toxicity and confirm the usefulness of municipal and animal wastes in enhancing soil and environmental qualities.
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Affiliation(s)
- Sajjad Hazrati
- Department of Soil Science, Faculty of Agricultural Engineering and Technology, University of Tehran, Iran.
| | - Mohsen Farahbakhsh
- Department of Soil Science, Faculty of Agricultural Engineering and Technology, University of Tehran, Iran.
| | - Ghasem Heydarpoor
- Department of Reclamation of Arid and Mountainous Regions, Faculty of Natural Resources, University of Tehran, Iran
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28
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Nair NM, Varghese GK. Optimization of parameters for the extraction of Pb from lateritic soil using EDTA. SN APPLIED SCIENCES 2020. [DOI: 10.1007/s42452-020-3171-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
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Hong N, Guan Y, Yang B, Zhong J, Zhu P, Ok YS, Hou D, Tsang DCW, Guan Y, Liu A. Quantitative source tracking of heavy metals contained in urban road deposited sediments. JOURNAL OF HAZARDOUS MATERIALS 2020; 393:122362. [PMID: 32114133 DOI: 10.1016/j.jhazmat.2020.122362] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Revised: 01/31/2020] [Accepted: 02/20/2020] [Indexed: 05/11/2023]
Abstract
Source tracking for heavy metals contained in road deposited sediments (RDS) is essential for pollution control and human health risk management. Previous studies on tracking sources for heavy metals have mostly been qualitative or semi-quantitative. This study quantitatively assessed the relative contributions of eight sources to five typical heavy metals in the urban environment using a chemical mass-balance based stochastic method. The results indicated that tire wear contributed the most masses to RDS (33 ± 26 %) while brake lining dusts contributed the least. Urban soil, tire wear, and brake lining dusts contributed the most to Pb (41 ± 32 %), Zn (28 ± 25 %), and Cu (59 ± 30 %), respectively, while gasoline engine exhaust was the main source of both Cr (29 ± 28 %) and Ni (20 ± 23 %). The outcomes also showed that tire wear and diesel engine exhaust have higher potential to threaten human health risk because they generate high amounts of heavy metals with high bioaccessibility. The research results can also provide a quantitative guidance for taking remediation actions of heavy metal control on urban road surfaces and measuring the effectiveness of those actions.
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Affiliation(s)
- Nian Hong
- College of Chemistry and Environmental Engineering, Shenzhen University, 518060, Shenzhen, China
| | - Yingjie Guan
- College of Chemistry and Environmental Engineering, Shenzhen University, 518060, Shenzhen, China
| | - Bo Yang
- College of Chemistry and Environmental Engineering, Shenzhen University, 518060, Shenzhen, China
| | - Jie Zhong
- College of Chemistry and Environmental Engineering, Shenzhen University, 518060, Shenzhen, China
| | - Panfeng Zhu
- Chair of Urban Water Systems Engineering, Technical University of Munich, Am Coulombwall 3, 85748, Garching, Germany
| | - Yong Sik Ok
- Division of Environmental Science and Ecological Engineering, Korea University, Seoul, 02841, Republic of Korea
| | - Deyi Hou
- School of Environment, Tsinghua University, Beijing, 100084, China
| | - Daniel C W Tsang
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
| | - Yuntao Guan
- Guangdong Provincial Engineering Technology Research Centre for Urban Water Cycle and Water Environment Safety, Graduate School at Shenzhen, Tsinghua University, 518055, Shenzhen, China
| | - An Liu
- College of Chemistry and Environmental Engineering, Shenzhen University, 518060, Shenzhen, China.
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Wang G, Pan X, Zhang S, Zhong Q, Zhou W, Zhang X, Wu J, Vijver MG, Peijnenburg WJGM. Remediation of heavy metal contaminated soil by biodegradable chelator-induced washing: Efficiencies and mechanisms. ENVIRONMENTAL RESEARCH 2020; 186:109554. [PMID: 32344210 DOI: 10.1016/j.envres.2020.109554] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2019] [Revised: 04/15/2020] [Accepted: 04/17/2020] [Indexed: 06/11/2023]
Abstract
Biodegradable chelators (BCs) are promising substitutes for conventional washing agents in the remediation of heavy metal contaminated soil with strong complexing ability and less cost. However, great challenges for the applications of BC-assisted washing still exist, such as the assessment of the factor affecting the efficiency of metal removal and the unclear of the metal removal mechanism. Batch washing was therefore explored to evaluate the potential for four BCs for removing Cd, Pb, and Zn from polluted soils. The soil spectroscopic characteristics before and after washing were also investigated. The results demonstrated that iminodisuccinic acid (ISA) and glutamate-N, N-diacetic acid (GLDA) were an appealing alternative to commonly used non-biodegradable ethylenediaminetetraacetic acid, but glucomonocarbonic acid (GCA) and polyaspartic acid (PASP) were less efficient. Optimal parameters of BCs were determined to be a concentration of 50 mmol L-1, a pH of 5.0, a contact time of 120 min, and a solid/liquid ratio of 1:5, considering metal removal efficiencies and the suitable cost. A single removal washing could be up to 52.39% of Cd, 71.79% of Pb, and 34.13% of Zn from mine soil, and 98.28% of Cd, 91.10% of Pb, and 90.91% of Zn from polluted farmland soil. After washing, the intensity of heavy metal binding to soil colloids increased while the metal mobility reduced because of weakly bound fractions removed by BCs. The BCs-induced soil washing revealed that the possible mechanisms of metal removal included the acid dissolution, ion exchange, and surface complexation. Our findings highlight the potential application of especially ISA and GLDA as efficient washing agents to remove potentially toxic elements from contaminated soils.
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Affiliation(s)
- Guiyin Wang
- College of Environmental Science, Sichuan Agricultural University, Wenjiang, 611130, China; Sichuan Provincial Key Laboratory of Soil Environmental Protection, Chengdu, 611130, China; Institute of Environmental Sciences (CML), Leiden University, P.O. Box 9518, 2300 RA, Leiden, the Netherlands
| | - Xiaomei Pan
- College of Environmental Science, Sichuan Agricultural University, Wenjiang, 611130, China; Chengdu Agricultural College, Wenjiang, 611130, China
| | - Shirong Zhang
- College of Environmental Science, Sichuan Agricultural University, Wenjiang, 611130, China; Sichuan Provincial Key Laboratory of Soil Environmental Protection, Chengdu, 611130, China.
| | - Qinmei Zhong
- College of Environmental Science, Sichuan Agricultural University, Wenjiang, 611130, China; Sichuan Provincial Key Laboratory of Soil Environmental Protection, Chengdu, 611130, China
| | - Wei Zhou
- College of Resources, Sichuan Agricultural University, Wenjiang, 611130, China
| | - Xiaohong Zhang
- College of Environmental Science, Sichuan Agricultural University, Wenjiang, 611130, China
| | - Jun Wu
- College of Environmental Science, Sichuan Agricultural University, Wenjiang, 611130, China
| | - Martina G Vijver
- Institute of Environmental Sciences (CML), Leiden University, P.O. Box 9518, 2300 RA, Leiden, the Netherlands
| | - Willie J G M Peijnenburg
- Institute of Environmental Sciences (CML), Leiden University, P.O. Box 9518, 2300 RA, Leiden, the Netherlands; National Institute of Public Health and the Environment (RIVM), P.O. Box 1, Bilthoven, the Netherlands
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31
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Tong L, He J, Wang F, Wang Y, Wang L, Tsang DCW, Hu Q, Hu B, Tang Y. Evaluation of the BCR sequential extraction scheme for trace metal fractionation of alkaline municipal solid waste incineration fly ash. CHEMOSPHERE 2020; 249:126115. [PMID: 32045756 DOI: 10.1016/j.chemosphere.2020.126115] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Revised: 01/30/2020] [Accepted: 02/03/2020] [Indexed: 06/10/2023]
Abstract
The BCR sequential extraction scheme (SES), initially developed for soils and sediments, is frequently adopted to evaluate the environmental risks of municipal solid waste incineration (MSWI) fly ash. Within the procedure, metals are liberated from the matrix hosting them relying on the selectivity of the chosen chemical reagents or operation conditions. However, the effect of the high content of alkaline substances in MSWI fly ash on the selectivity of acetic acid to acid-soluble fraction metals was ignored. In this study, the feasibility of the BCR SES for evaluating MSWI fly ash was assessed by adjusting the acetic acid washing times in the acid-soluble extraction step. The metal fractionation, as well as mineralogy, morphology, and surface chemistry of the residues after three successive acid washing processes, were analyzed. The results reveal that only easily soluble salts, but not hydroxides, are entirely extracted after the first acid washing (pH∼12.0). Importantly, carbonates (generally reported as an indicator of the complete release of acid-soluble metals) are mostly decomposed only after the third acid washing (pH∼3.8). The incomplete dissolution of calcium carbonates in a single-step acid washing may convey misleading results of metal fractionation and underestimates the environmental risk of potentially toxic elements. Therefore, complete removal of carbonates should be employed as the endpoint of the acid-soluble fraction extraction step in the evaluation of MSWI fly ash. This work can help in selecting proper strategies for fly ash management and developing proper sequential extraction schemes for similar high-alkalinity hazardous waste risk assessment.
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Affiliation(s)
- Lizhi Tong
- School of Environment, Harbin Institute of Technology, Harbin, 150090, China; School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Jinyong He
- Beijing Huan Ding Environmental Data Research Institute, Beijing, 100083, China
| | - Feng Wang
- School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China; Engineering Innovation Center, Southern University of Science and Technology, Beijing, 100083, China
| | - Yan Wang
- Department of Civil and Environmental Engineering, University of Pittsburgh, Pittsburgh, PA, 15261, United States
| | - Lei Wang
- Institute of Construction Materials, Technische Universität Dresden, DE-01062, Dresden, Germany
| | - Daniel C W Tsang
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
| | - Qing Hu
- School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China; Beijing Huan Ding Environmental Data Research Institute, Beijing, 100083, China; Engineering Innovation Center, Southern University of Science and Technology, Beijing, 100083, China.
| | - Bin Hu
- School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China; Engineering Innovation Center, Southern University of Science and Technology, Beijing, 100083, China
| | - Yi Tang
- School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China; Engineering Innovation Center, Southern University of Science and Technology, Beijing, 100083, China
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32
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Gao J, Zhao T, Tsang DCW, Zhao N, Wei H, Feng M, Liu K, Zhang W, Qiu R. Effects of Zn in sludge-derived biochar on Cd immobilization and biological uptake by lettuce. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 714:136721. [PMID: 31978776 DOI: 10.1016/j.scitotenv.2020.136721] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Revised: 01/13/2020] [Accepted: 01/14/2020] [Indexed: 06/10/2023]
Abstract
Considering the high Zn content of municipal sewage sludge and its competition with Cd during plant uptake due to their similar properties, the presence of Zn in sludge-derived biochar (SDBC) may affect Cd immobilization and uptake by plants. To confirm this, SDBC samples with different Zn contents were prepared and characterized. Their Cd immobilization behavior was studied by conducting batch sorption experiments, and their effects on Cd uptake by lettuce were explored by conducting hydroponic experiments. The results reveal that some Zn contained in the sewage sludge was transformed into ZnO during pyrolysis. The Brunauer-Emmett-Teller (BET) surface area of the SDBC samples containing 2324 mg kg-1 Zn (BC-2324) was 18.3 m2 g-1, which was 132% larger than that of the samples containing 1438 mg kg-1 Zn (BC-1438). The SDBC samples containing 1901 mg kg-1 (BC-1901) exhibited the highest Langmuir sorption capacity of 3476 mg kg-1, which is 115% higher than that of SB-1438. Furthermore, the lettuce remedied with SB-1901 exhibited 44% more biomass; lower peroxidase, catalase, and malondialdehyde activity; and 18.4% less Cd in the leaves of the lettuce than the lettuce remedied with BC-1438, suggesting the potential benefits of using Zn-rich SDBC for soil amendment.
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Affiliation(s)
- Jia Gao
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China
| | - Tuokun Zhao
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China
| | - Daniel C W Tsang
- Department of Civil and Environmental Engineering, Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
| | - Nan Zhao
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China.
| | - Hang Wei
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China
| | - Mingyu Feng
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China
| | - Kunyuan Liu
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China
| | - Weihua Zhang
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China; Guangdong Provincial Key Laboratory of Environmental Pollution and Remediation Technology, Guangdong Provincial Engineering Research Center for Heavy Metal Contaminated Soil Remediation, Guangzhou 510275, China; Shenzhen Research Institute, Sun Yat-sen University, Shenzhen 518057, China.
| | - Rongliang Qiu
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China; Guangdong Provincial Key Laboratory of Environmental Pollution and Remediation Technology, Guangdong Provincial Engineering Research Center for Heavy Metal Contaminated Soil Remediation, Guangzhou 510275, China
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33
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Liu Q, Sheng Y, Wang W, Li C, Zhao G. Remediation and its biological responses of Cd contaminated sediments using biochar and minerals with nanoscale zero-valent iron loading. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 713:136650. [PMID: 32019026 DOI: 10.1016/j.scitotenv.2020.136650] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2019] [Revised: 12/27/2019] [Accepted: 01/10/2020] [Indexed: 06/10/2023]
Abstract
Remediation of Cd pollution in sediments is crucial for the safety of aquatic environments and human health. In this study, four effective, common, and low-cost remediation materials (zeolite, sepiolite, red mud (RM), and biochar (BC)) loaded with nanoscale zero-valent iron (nZVI) and themselves were employed to immobilize Cd in sediments. The effects of different materials on sediment properties, immobilization effectiveness, bacterial communities, enzyme activities, and dissolved organic matter (DOM) were investigated. Results showed that sediment properties were significantly changed by the addition of immobilization materials (P < 0.05). The geochemical fraction analysis showed that the labile Cd was partially transformed to the stable fraction after immobilization, with an 11-47% decrease in the acid-soluble fraction and a 50-1000% increase in the residual fraction. The Cd immobilization effectiveness peaked at the nZVI/RM and nZVI/BC treatments, and the Cd toxicity characteristic leaching procedure (TCLP) leachabilities decreased by 42% and 44%, respectively. The modified materials were more effective for immobilizing Cd than the raw materials owing to the presence of nZVI, and the Cd TCLP leachabilities with the modified materials decreased by 15%-22% compared with the raw material treatments. Immobilization-driven reduction of bioavailable Cd enhanced the richness and diversity of bacterial communities and enzyme activities. Moreover, the immobilization treatment promoted the Fe(III)-reducing process by increasing the Fe(III)-reducing bacteria (e.g. Geobacteraceae, Bacillus, and Clostridium), which are conducive to Cd immobilization. Additionally, the DOM composition presented more autogenetic characteristics in treated groups. BC (nZVI/BC) can be selected as the priority material for Cd immobilization in sediments due to higher immobilization effectiveness and lower adverse effects on sediments.
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Affiliation(s)
- Qunqun Liu
- Research Center for Coastal Environment Engineering Technology of Shandong Province, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China; University of Chinese Academy of Sciences, Beijing, China
| | - Yanqing Sheng
- Research Center for Coastal Environment Engineering Technology of Shandong Province, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China.
| | - Wenjing Wang
- Research Center for Coastal Environment Engineering Technology of Shandong Province, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China
| | - Changyu Li
- Research Center for Coastal Environment Engineering Technology of Shandong Province, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China; University of Chinese Academy of Sciences, Beijing, China
| | - Guoqiang Zhao
- Research Center for Coastal Environment Engineering Technology of Shandong Province, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China; University of Chinese Academy of Sciences, Beijing, China
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34
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Sun Y, Chen SS, Lau AYT, Tsang DCW, Mohanty SK, Bhatnagar A, Rinklebe J, Lin KYA, Ok YS. Waste-derived compost and biochar amendments for stormwater treatment in bioretention column: Co-transport of metals and colloids. JOURNAL OF HAZARDOUS MATERIALS 2020; 383:121243. [PMID: 31563764 DOI: 10.1016/j.jhazmat.2019.121243] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2019] [Revised: 08/29/2019] [Accepted: 09/15/2019] [Indexed: 06/10/2023]
Abstract
Bioretention systems, as one of the most practical management operations for low impact development of water recovery, utilize different soil amendments to remove contaminants from stormwater. For the sake of urban sustainability, the utilization of amendments derived from waste materials has a potential to reduce waste disposal at landfill while improving the quality of stormwater discharge. This study investigated the efficiency of food waste compost and wood waste biochar for metal removal from synthetic stormwater runoff under intermittent flow and co-presence of colloids. Throughout intermittent infiltration of 84 pore volumes of stormwater, columns amended with compost and biochar removed more than 50-70% of influent metals, whereas iron-oxide coated sand was much less effective. Only a small portion of metals adsorbed on the compost (< 0.74%) was reactivated during the drainage of urban pipelines that do not flow frequently, owing to abundant oxygen-containing functional groups in compost. In comparison, co-existing kaolinite enhanced metal removal by biochar owing to the abundance of active sites, whereas co-existing humic acid facilitated mobilization via metal-humate complexation. The results suggest that both waste-derived compost and biochar show promising potential for stormwater harvesting, while biochar is expected to be more recalcitrant and desirable in field-scale bioretention systems.
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Affiliation(s)
- Yuqing Sun
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
| | - Season S Chen
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
| | - Abbe Y T Lau
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
| | - Daniel C W Tsang
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China.
| | - Sanjay K Mohanty
- Department of Civil and Environmental Engineering, University of California, Los Angeles, CA, 90095-1593, USA
| | - Amit Bhatnagar
- Department of Environmental and Biological Sciences, University of Eastern Finland, P.O. Box 1627, FI-70211, Kuopio, Finland
| | - Jörg Rinklebe
- University of Wuppertal, School of Architecture and Civil Engineering, Institute of Foundation Engineering, Water and Waste Management, Laboratory of Soil and Groundwater-Management, Pauluskirchstraße 7, 42285, Wuppertal, Germany; Department of Environment, Energy and Geoinformatics, Sejong University, 98 Gunja-Dong, Seoul, Republic of Korea
| | - Kun-Yi Andrew Lin
- Department of Environmental Engineering, National Chung Hsing University, 250 Kuo-Kuang Road, Taichung, Taiwan
| | - Yong Sik Ok
- Korea Biochar Research Center, O-Jeong Eco-Resilience Institute (OJERI) & Division of Environmental Science and Ecological Engineering, Korea University, Seoul, 02841, Republic of Korea
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35
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Feng C, Chen Y, Zhang S, Wang G, Zhong Q, Zhou W, Xu X, Li T. Removal of lead, zinc and cadmium from contaminated soils with two plant extracts: Mechanism and potential risks. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 187:109829. [PMID: 31654869 DOI: 10.1016/j.ecoenv.2019.109829] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2019] [Revised: 10/14/2019] [Accepted: 10/15/2019] [Indexed: 06/10/2023]
Abstract
Screening appropriate washing agents to remediate soils contaminated with heavy metals is crucial for decreasing metal hazards posing to environment and human health. In this study, two plant washing agents-water-extracted from Fagopyrum esculentum and Fordiophyton faberi, were applied to remove soil Pb, Zn, and Cd by washing. Results indicated that metal removals augmented with increase of washing solution concentrations, decreased with increasing pH values of the solution and followed the pseudo-second-order model depending on contact duration. At concentration of 50 g/L, pH 3 and contact duration of 120 min, F. esculentum had higher removals of Pb (5.98-6.83%), Zn (21.82-27.94%), and Cd (39.90-40.74%) than those of F. faberi. And metal ions could be removed by binding with carboxyl, hydroxyl, amide, amine and aromatic groups in washing solutions. The potential risks of residual metals declined by 51.35-52.12% for mine soil and 48.51-49.96% for farmland soil with exchangeable and carbonate-bound fractions obviously extracted after a single washing (P < 0.05). And soil organic carbon and nutrients increased to some extent except for total phosphorus and available potassium. Moreover, soil phytotoxicity lowered except that some adverse effects on seed germination existed. Therefore, the water extract from F. esculentum is a promising washing agent for heavy metal removal.
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Affiliation(s)
- Can Feng
- College of Environmental Sciences, Sichuan Agricultural University, Wenjiang, 611130, PR China; Sichuan Provincial Key Laboratory of Soil Environmental Protection, Wenjiang, 611130, PR China
| | - Yue Chen
- College of Environmental Sciences, Sichuan Agricultural University, Wenjiang, 611130, PR China; Sichuan Provincial Key Laboratory of Soil Environmental Protection, Wenjiang, 611130, PR China
| | - Shirong Zhang
- College of Environmental Sciences, Sichuan Agricultural University, Wenjiang, 611130, PR China; Sichuan Provincial Key Laboratory of Soil Environmental Protection, Wenjiang, 611130, PR China.
| | - Guiyin Wang
- College of Environmental Sciences, Sichuan Agricultural University, Wenjiang, 611130, PR China; Sichuan Provincial Key Laboratory of Soil Environmental Protection, Wenjiang, 611130, PR China
| | - Qinmei Zhong
- College of Environmental Sciences, Sichuan Agricultural University, Wenjiang, 611130, PR China; Sichuan Provincial Key Laboratory of Soil Environmental Protection, Wenjiang, 611130, PR China
| | - Wei Zhou
- College of Resources, Sichuan Agricultural University, Wenjiang, 611130, PR China
| | - Xiaoxun Xu
- College of Environmental Sciences, Sichuan Agricultural University, Wenjiang, 611130, PR China
| | - Ting Li
- College of Resources, Sichuan Agricultural University, Wenjiang, 611130, PR China
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36
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Feng W, Zhang S, Zhong Q, Wang G, Pan X, Xu X, Zhou W, Li T, Luo L, Zhang Y. Soil washing remediation of heavy metal from contaminated soil with EDTMP and PAA: Properties, optimization, and risk assessment. JOURNAL OF HAZARDOUS MATERIALS 2020; 381:120997. [PMID: 31476708 DOI: 10.1016/j.jhazmat.2019.120997] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2019] [Revised: 08/04/2019] [Accepted: 08/11/2019] [Indexed: 06/10/2023]
Abstract
Soil washing is a rapid and efficient remediation technique for soil contaminated by heavy metals. In this study, Cd, Pb, and Zn were removed from contaminated soil by ethylenediamine tetra (methylene phosphonic acid) (EDTMP) and polyacrylic acid (PAA). We then investigated the effect of varying the concentration, pH and duration of the washing processes. Single-factor experiments suggest that the PAA washing process may be dominated by electrostatic adsorption, and is suitable for remediation under weak acid and neutral conditions. Meanwhile, EDTMP remediation might be dominated by chelation, which is favorable in strong acid and alkaline environments. In a quadratic saturation D-optimization design (QSDD), we optimized the washing parameters and further explored the washing mechanism including primary factor, principal effect, interaction effect, and the optimal washing conditions, with simultaneously changing multiple influencing factors. The optimum efficiencies of Cd, Pb, and Zn removal were 92.74%, 96.14%, and 50.76% respectively in EDTMP remediation, and 84.62, 79.24, and 41.66% respectively in PAA remediation. The washing processes effectively reduced the availability of Cd, Pb, and Zn in contaminated soil, without noticeably affecting soil chemical properties. Therefore, the washing incurred little ecological risk. EDTMP and PAA are suitable remediation agents of soil contaminated by heavy metals.
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Affiliation(s)
- Weijin Feng
- College of Environmental Science, Sichuan Agricultural University, Wenjiang, 611130, PR China; Sichuan Provincial Key Laboratory of Soil Environmental Protection, Chengdu 611130, PR China
| | - Shirong Zhang
- College of Environmental Science, Sichuan Agricultural University, Wenjiang, 611130, PR China; Sichuan Provincial Key Laboratory of Soil Environmental Protection, Chengdu 611130, PR China.
| | - Qinmei Zhong
- College of Environmental Science, Sichuan Agricultural University, Wenjiang, 611130, PR China; Sichuan Provincial Key Laboratory of Soil Environmental Protection, Chengdu 611130, PR China
| | - Guiyin Wang
- College of Environmental Science, Sichuan Agricultural University, Wenjiang, 611130, PR China; Sichuan Provincial Key Laboratory of Soil Environmental Protection, Chengdu 611130, PR China
| | - Xiaomei Pan
- College of Environmental Science, Sichuan Agricultural University, Wenjiang, 611130, PR China; Sichuan Provincial Key Laboratory of Soil Environmental Protection, Chengdu 611130, PR China
| | - Xiaoxun Xu
- College of Environmental Science, Sichuan Agricultural University, Wenjiang, 611130, PR China
| | - Wei Zhou
- College of Resources, Sichuan Agricultural University, Wenjiang, 611130, PR China
| | - Ting Li
- College of Resources, Sichuan Agricultural University, Wenjiang, 611130, PR China
| | - Ling Luo
- College of Environmental Science, Sichuan Agricultural University, Wenjiang, 611130, PR China
| | - Yanzong Zhang
- College of Environmental Science, Sichuan Agricultural University, Wenjiang, 611130, PR China
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37
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Palansooriya KN, Shaheen SM, Chen SS, Tsang DCW, Hashimoto Y, Hou D, Bolan NS, Rinklebe J, Ok YS. Soil amendments for immobilization of potentially toxic elements in contaminated soils: A critical review. ENVIRONMENT INTERNATIONAL 2020; 134:105046. [PMID: 31731004 DOI: 10.1016/j.envint.2019.105046] [Citation(s) in RCA: 444] [Impact Index Per Article: 111.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Revised: 06/28/2019] [Accepted: 07/21/2019] [Indexed: 05/18/2023]
Abstract
Soil contamination by potentially toxic elements (PTEs) has led to adverse environmental impacts. In this review, we discussed remediation of PTEs contaminated soils through immobilization techniques using different soil amendments with respect to type of element, soil, and amendment, immobilization efficiency, underlying mechanisms, and field applicability. Soil amendments such as manure, compost, biochar, clay minerals, phosphate compounds, coal fly ash, and liming materials are widely used as immobilizing agents for PTEs. Among these soil amendments, biochar has attracted increased interest over the past few years because of its promising surface properties. Integrated application of appropriate amendments is also recommended to maximize their use efficiency. These amendments can reduce PTE bioavailability in soils through diverse mechanisms such as precipitation, complexation, redox reactions, ion exchange, and electrostatic interaction. However, soil properties such as soil pH, and clay, sesquioxides and organic matter content, and processes, such as sorption/desorption and redox processes, are the key factors governing the amendments' efficacy for PTEs immobilization in soils. Selecting proper immobilizing agents can yield cost-effective remediation techniques and fulfill green and sustainable remediation principles. Furthermore, long-term stability of immobilized PTE compounds and the environmental impacts and cost effectiveness of the amendments should be considered before application.
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Affiliation(s)
- Kumuduni Niroshika Palansooriya
- Korea Biochar Research Center, O-Jeong Eco-Resilience Institute (OJERI), Division of Environmental Science and Ecological Engineering, Korea University, Seoul, Republic of Korea
| | - Sabry M Shaheen
- University of Wuppertal, School of Architecture and Civil Engineering, Institute of Foundation Engineering, Water- and Waste-Management, Laboratory of Soil- and Groundwater-Management, Pauluskirchstraße 7, 42285 Wuppertal, Germany; King Abdulaziz University, Faculty of Meteorology, Environment, and Arid Land Agriculture, Department of Arid Land Agriculture, 21589 Jeddah, Saudi Arabia; University of Kafrelsheikh, Faculty of Agriculture, Department of Soil and Water Sciences, 33 516 Kafr El-Sheikh, Egypt
| | - Season S Chen
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
| | - Daniel C W Tsang
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China.
| | - Yohey Hashimoto
- Department of Bioapplications and Systems Engineering, Tokyo University of Agriculture and Technology, Japan
| | - Deyi Hou
- School of Environment, Tsinghua University, Beijing 100084, China
| | - Nanthi S Bolan
- Global Centre for Environmental Remediation (GCER), Advanced Technology Centre, Faculty of Science, The University of Newcastle, Callaghan, NSW 2308, Australia; CRC for High Performance Soil, Callaghan, NSW-2308, Australia
| | - Jörg Rinklebe
- University of Wuppertal, School of Architecture and Civil Engineering, Institute of Foundation Engineering, Water- and Waste-Management, Laboratory of Soil- and Groundwater-Management, Pauluskirchstraße 7, 42285 Wuppertal, Germany; Department of Environment, Energy and Geoinformatics, Sejong University, Seoul 05006, Republic of Korea.
| | - Yong Sik Ok
- Korea Biochar Research Center, O-Jeong Eco-Resilience Institute (OJERI), Division of Environmental Science and Ecological Engineering, Korea University, Seoul, Republic of Korea.
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Li N, Yin M, Tsang DCW, Yang S, Liu J, Li X, Song G, Wang J. Mechanisms of U(VI) removal by biochar derived from Ficus microcarpa aerial root: A comparison between raw and modified biochar. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 697:134115. [PMID: 32380609 DOI: 10.1016/j.scitotenv.2019.134115] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Revised: 08/06/2019] [Accepted: 08/24/2019] [Indexed: 06/11/2023]
Abstract
Uranium (U) is a toxic and radioactive element. Excessive amounts of aqueous U(VI) generated from U mining, processing and nuclear industry may result in severe and irreversible damage to the environment. Herein, Ficus microcarpa aerial root (FMAR), a biowaste material, was used to adsorb U(VI) from aqueous solutions for the first time. Potassium permanganate (KMnO4)-modified FMAR biochar was synthesised, characterised and compared with raw (unmodified) biochar with respect to U(VI) adsorption. The results showed that the adsorption capability of the modified FMAR biochar was evidently higher than that of the raw biochar. Multiple characterisation techniques confirmed that the discrepancy was mainly due to the increased content of O-H and formation of irregular sheet-like nanostructure with the ultrafine MnO2 nanoparticles on the biochar surfaces after KMnO4 modification. The abundance of O-H and nanoscale MnO2 notably enhanced the adsorption of U(VI) by means of coordination and Lewis acid-base interaction. The results indicate that KMnO4-modified FMAR biochar has a good potential to serve as an environment-friendly adsorbent for the removal of U(VI) from solution.
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Affiliation(s)
- Nuo Li
- Key Laboratory of Water Quality and Conservation in the Pearl River Delta, Ministry of Education, Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resources, Institute of Environmental Research at Greater Bay, School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, China
| | - Meiling Yin
- Key Laboratory of Water Quality and Conservation in the Pearl River Delta, Ministry of Education, Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resources, Institute of Environmental Research at Greater Bay, School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, China
| | - Daniel C W Tsang
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
| | - Shitong Yang
- Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Juan Liu
- Key Laboratory of Water Quality and Conservation in the Pearl River Delta, Ministry of Education, Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resources, Institute of Environmental Research at Greater Bay, School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, China; Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China.
| | - Xue Li
- College of Chemistry and Chemical Engineering, Shaoxing University, Shaoxing 312000, China
| | - Gang Song
- Key Laboratory of Water Quality and Conservation in the Pearl River Delta, Ministry of Education, Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resources, Institute of Environmental Research at Greater Bay, School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, China; Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resources, Guangzhou 510006, China
| | - Jin Wang
- Key Laboratory of Water Quality and Conservation in the Pearl River Delta, Ministry of Education, Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resources, Institute of Environmental Research at Greater Bay, School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, China; Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resources, Guangzhou 510006, China.
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Luo J, Yang G, Igalavithana AD, He W, Gao B, Tsang DCW, Ok YS. Effects of elevated CO 2 on the phytoremediation efficiency of Noccaea caerulescens. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2019; 255:113169. [PMID: 31539847 DOI: 10.1016/j.envpol.2019.113169] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Revised: 08/20/2019] [Accepted: 09/02/2019] [Indexed: 05/28/2023]
Abstract
Concentrations of atmospheric carbon dioxide have been continuously increasing, and more investigations are needed in regard to the responses of various plants to the corresponding climatic conditions. In particular, potential variations in phytoremediation efficiency induced by global warming have rarely been investigated. Objective of this research was to evaluate the changes in phytoremediation efficiency of Noccaea caerulescens exposed to different concentrations of CO2. The concentrations of CO2 in the elevated CO2 treatments were adjusted to 550 ± 50 ppm to match the level of atmospheric CO2 predicted in 2050-2070. Compared to ambient controls (400 ppm), biomass yields and metal concentrations of N. caerulescens increased under elevated CO2 conditions, thus indicating that the phytoremediation efficiency of the species could increase in higher CO2 environment. In addition, water soluble and exchangeable Pb and Cu concentrations in soils decreased under elevated CO2 conditions, which reduced the leaching risks of the metals. The concentrations of malondialdehyde (MDA) of N. caerulescens decreased to different degrees with the increased CO2 concentrations. The overall findings suggested that elevations in CO2 can reduce the oxidative damage caused by metals in this species. The phytoremediation efficiency of N. caerulescens grown in multiple metal-enriched soils could be enhanced with global warming.
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Affiliation(s)
- Jie Luo
- College of Resources and Environment, Yangtze University, Wuhan, China
| | - Ge Yang
- College of Resources and Environment, Yangtze University, Wuhan, China
| | - Avanthi Deshani Igalavithana
- Korea Biochar Research Center, O-Jeong Eco-Resilience Institute (OJERI) & Division of Environmental Science and Ecological Engineering, Korea University, Seoul, 02841, Republic of Korea
| | - Wenxiang He
- College of Resources and Environment, Yangtze University, Wuhan, China
| | - Bin Gao
- Department of Agricultural and Biological Engineering, University of Florida, Gainesville, FL, 32611, USA
| | - Daniel C W Tsang
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
| | - Yong Sik Ok
- Korea Biochar Research Center, O-Jeong Eco-Resilience Institute (OJERI) & Division of Environmental Science and Ecological Engineering, Korea University, Seoul, 02841, Republic of Korea.
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40
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Sierra Aragón M, Nakamaru YM, García-Carmona M, Martínez Garzón FJ, Martín Peinado FJ. The role of organic amendment in soils affected by residual pollution of potentially harmful elements. CHEMOSPHERE 2019; 237:124549. [PMID: 31549661 DOI: 10.1016/j.chemosphere.2019.124549] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Revised: 07/29/2019] [Accepted: 08/08/2019] [Indexed: 06/10/2023]
Abstract
The addition of organic amendment in soils affected by residual pollution of potentially harmful elements (PHEs) is evaluated. The area was polluted twenty years ago and remediation actions were intensively applied, but evidence of pollution are still detected in some sectors. The amendment application produces significant changes in the main soil properties and modifies the mobility and availability of the pollutants. In general, Cu, Zn, Cd and Pb, showed a significant reduction in soluble and exchangeable forms after the vermicompost addition (percentage of reduction ranging from 59% for soluble Pb to 95% for exchangeable Zn), both in highly (UVS) as in moderately (VS1) polluted soils. This reduction is strongly related to the rise in OC content and pH. Arsenic presented no significant reduction or even an increase in soluble forms in moderately polluted soils (VS1), where the competing effects of OC and phosphorous could be responsible for this increase. Pb also showed an increase in availability after vermicompost application, probably related to the competing effect of Mg2+ coming from the organic amendment. The less mobile forms (those extracted with oxalic-oxalate, pyrophosphate and EDTA), indicate that vermicompost application reduce medium-long term mobility to similar values of those found in less polluted soils (VS2); anyway, an increase in available forms of Pb and As was detected in some cases, indicating a potential risk of toxicity that should be monitored over time.
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Affiliation(s)
- Manuel Sierra Aragón
- Departamento de Edafología y Química Agrícola, Facultad de Ciencias, Universidad de Granada, Campus Fuentenueva S/n, 18002, Granada, Spain
| | - Yasuo Mitsui Nakamaru
- Laboratory of Integrated Crop Management Science, Faculty of Bioindustry, Tokyo University of Agriculture, 196 Yasaka, Abashiri, Hokkaido, 099-2493, Japan
| | - Minerva García-Carmona
- Departamento de Agroquímica y Medio Ambiente, Universidad Miguel Hernández, Avda. Universidad, S/n. Edificio Alcudia, Elche, 03202, Alicante, Spain.
| | - Francisco Javier Martínez Garzón
- Departamento de Edafología y Química Agrícola, Facultad de Ciencias, Universidad de Granada, Campus Fuentenueva S/n, 18002, Granada, Spain
| | - Francisco José Martín Peinado
- Departamento de Edafología y Química Agrícola, Facultad de Ciencias, Universidad de Granada, Campus Fuentenueva S/n, 18002, Granada, Spain
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41
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Xiong X, Liu X, Yu IKM, Wang L, Zhou J, Sun X, Rinklebe J, Shaheen SM, Ok YS, Lin Z, Tsang DCW. Potentially toxic elements in solid waste streams: Fate and management approaches. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2019; 253:680-707. [PMID: 31330359 DOI: 10.1016/j.envpol.2019.07.012] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Revised: 06/30/2019] [Accepted: 07/03/2019] [Indexed: 06/10/2023]
Abstract
Solid wastes containing potentially toxic elements (PTEs) are widely generated around the globe. Critical concerns have been raised over their impacts on human health and the environment, especially for the exposure to PTEs during the transfer and disposal of the wastes. It is important to devise highly-efficient and cost-effective treatment technologies for the removal or immobilisation of PTEs in solid wastes. However, there is an inadequate overview of the global flow of PTEs-contaminated solid wastes in terms of geographical distribution patterns, which is vital information for decision making in sustainable waste management. Moreover, in view of the scarcity of resources and the call for a circular economy, there is a pressing need to recover materials (e.g., precious metals and rare earth elements) from waste streams and this is a more sustainable and environmentally friendly practice compared with ore mining. Therefore, this article aims to give a thorough overview to the global flow of PTEs and the recovery of waste materials. This review first summarises PTEs content in various types of solid wastes; then, toxic metal(loid)s, radioactive elements, and rare earth elements are critically reviewed, with respect to their patterns of transport transformation and risks in the changing environment. Different treatments for the management of these contaminated solid wastes are discussed. Based on an improved understanding of the dynamics of metal(loid) fates and a review of existing management options, new scientific insights are provided for future research in the development of high-performance and sustainable treatment technologies for PTEs in solid wastes.
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Affiliation(s)
- Xinni Xiong
- Department of Civil and Environmental Engineering, Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
| | - Xueming Liu
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, China
| | - Iris K M Yu
- Department of Civil and Environmental Engineering, Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China; Green Chemistry Centre of Excellence, Department of Chemistry, University of York, York, YO10 5DD, United Kingdom
| | - Lei Wang
- Department of Civil and Environmental Engineering, Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China; Department of Materials Science and Engineering, University of Sheffield, Sir Robert Hadfield Building, Mappin St, Sheffield S1 3JD, United Kingdom
| | - Jin Zhou
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, China
| | - Xin Sun
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, China
| | - Jörg Rinklebe
- University of Wuppertal, School of Architecture and Civil Engineering, Institute of Foundation Engineering, Water- and Waste-Management, Soil- and Groundwater-Management, Pauluskirchstraße 7, 42285 Wuppertal, Germany; Department of Environment and Energy, Sejong University, Seoul 05006, Republic of Korea
| | - Sabry M Shaheen
- University of Wuppertal, School of Architecture and Civil Engineering, Institute of Foundation Engineering, Water- and Waste-Management, Soil- and Groundwater-Management, Pauluskirchstraße 7, 42285 Wuppertal, Germany; King Abdulaziz University, Faculty of Meteorology, Environment, and Arid Land Agriculture, Department of Arid Land Agriculture, 21589 Jeddah, Saudi Arabia; Department of Soil and Water Sciences, Faculty of Agriculture, University of Kafrelsheikh, Kafr El-Sheikh 33516, Egypt
| | - Yong Sik Ok
- Division of Environmental Science and Ecological Engineering, Korea University, Seoul 02841, Republic of Korea
| | - Zhang Lin
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, China
| | - Daniel C W Tsang
- Department of Civil and Environmental Engineering, Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China.
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42
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Zhao T, Zhang K, Chen J, Shi X, Li X, Ma Y, Fang G, Xu S. Changes in heavy metal mobility and availability in contaminated wet-land soil remediated using lignin-based poly(acrylic acid). JOURNAL OF HAZARDOUS MATERIALS 2019; 368:459-467. [PMID: 30708348 DOI: 10.1016/j.jhazmat.2019.01.061] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2018] [Revised: 12/17/2018] [Accepted: 01/21/2019] [Indexed: 06/09/2023]
Abstract
To mitigate the serious ecological problems and risks to human health that are posed by heavy metals in the soil, it is important to enhance the efficiency of heavy metal extraction by washing contaminated soil using chemical methods. Secondary pollution of soil by chemical chelating agents has, however, brought a new threat to the environment. Here, we describe a biodegradable LBPAA (lignin based poly(acrylic acid)) composite that was designed as a chelating agent to wash soil contaminated with Cu2+, Zn2+, Cd2+ and Pb2+ ions. Extraction and ion transfer of heavy metal ions by the LBPAA composite improved the remediation rate of contaminated soil during water leaching. After washing five times, the LBPAA-assisted elution process reduced the amount of Cu2+, Zn2+, Cd2+ and Pb2+ ions in contaminated soil to 22.57%, 52.60%, 13.63% and 17.95%, respectively. These values are 2.39-fold, 5.04-fold, 5.04-fold and 1.31-fold, respectively, better than elution with deionized water. Additionally, LBPAA is able to sequester Cd2+ and Pb2+ ions from the contaminated soil and transfer them to the eluent. In summary, this work provides a safe, environmentally friendly and sustainable remediation strategy for heavy metal-contaminated soil and demonstrates a new application for lignin in the field of soil remediation.
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Affiliation(s)
- Tianqi Zhao
- Material Science and Engineering College, Northeast Forestry University Heilongjiang, Harbin 150040, PR China
| | - Kun Zhang
- Material Science and Engineering College, Northeast Forestry University Heilongjiang, Harbin 150040, PR China
| | - Junwei Chen
- Material Science and Engineering College, Northeast Forestry University Heilongjiang, Harbin 150040, PR China
| | - Xiaobai Shi
- Material Science and Engineering College, Northeast Forestry University Heilongjiang, Harbin 150040, PR China
| | - Xu Li
- Material Science and Engineering College, Northeast Forestry University Heilongjiang, Harbin 150040, PR China
| | - Yanli Ma
- Material Science and Engineering College, Northeast Forestry University Heilongjiang, Harbin 150040, PR China.
| | - Guizhen Fang
- Material Science and Engineering College, Northeast Forestry University Heilongjiang, Harbin 150040, PR China; Key Laboratory of Bio-based Material Science and Technology Ministry of Education, Northeast Forestry University, Heilongjiang, Harbin 150040, PR China
| | - Shiyu Xu
- Material Science and Engineering College, Northeast Forestry University Heilongjiang, Harbin 150040, PR China
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43
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Liu Q, Deng Y, Tang J, Chen D, Li X, Lin Q, Yin G, Zhang M, Hu H. Potassium lignosulfonate as a washing agent for remediating lead and copper co-contaminated soils. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 658:836-842. [PMID: 30583179 DOI: 10.1016/j.scitotenv.2018.12.228] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2018] [Revised: 12/13/2018] [Accepted: 12/14/2018] [Indexed: 06/09/2023]
Abstract
Lignin is a renewable aromatic polymer which is present in large quantities in the cell walls of terrestrial plants and is the main binding agent for fibrous plant components. Potassium lignosulfonate (KLS), as a by-product of pulping processes, can be applied to agricultural fields as a soil conditioner and chelate fertilizer. In this study, based on its solubility and complexing ability, batch washing and column leaching was explored to evaluate the potential application of KLS in the washing remediation of soil contaminated with lead and copper. Under optimum conditions KLS concentration of 8%, pH of 5.24 and 6 h duration, the removal ratios for the simulated and mining area soils in the batch experiment were 67.40% and 52.87% respectively, for Pb and 73.42% and 55.20% respectively, for Cu. In the column leaching experiment, the removal efficiencies of Pb and Cu increased with solution volume and that the removal ratios of the simulated and mining area soils were 36.46% and 20.31%, respectively, for Pb and 39.74% and 22.76%, respectively, for Cu. KLS can reduce the ratio of acid-soluble and reducible fractions, which may have the most potential hazardous and poisonous for plants. Cation exchange capacity (CEC) and pH of soil were all stable after washing. However, the organic matter and available K, N, and P in the treated soil, which are important factors for plant growth increased significantly. This study showed that KLS can remove Pb and Cu from soil, while improve nutrient (ammonium nitrogen, available phosphorus and available potassium) levels of soil.
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Affiliation(s)
- Qianjun Liu
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China.
| | - Yu Deng
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China
| | - Jiepeng Tang
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China
| | - Di Chen
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China
| | - Xiang Li
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China
| | - Qintie Lin
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China
| | - Guangcai Yin
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China
| | - Min Zhang
- School of Materials Science and Energy Engineering, Foshan University, Foshan 528000, China
| | - Huawen Hu
- School of Materials Science and Energy Engineering, Foshan University, Foshan 528000, China
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44
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Yousaf MTB, Nawaz MF, Khawaja HF, Gul S, Ali S, Ahmad I, Rasul F, Rizwan M. Ecophysiological response of early stage Albizia lebbeck to cadmium toxicity and biochar addition. ARABIAN JOURNAL OF GEOSCIENCES 2019; 12:134. [DOI: 10.1007/s12517-019-4296-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Accepted: 02/01/2019] [Indexed: 09/01/2023]
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Yang F, Zhang S, Sun Y, Du Q, Song J, Tsang DCW. A novel electrochemical modification combined with one-step pyrolysis for preparation of sustainable thorn-like iron-based biochar composites. BIORESOURCE TECHNOLOGY 2019; 274:379-385. [PMID: 30544043 DOI: 10.1016/j.biortech.2018.10.042] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Revised: 10/17/2018] [Accepted: 10/19/2018] [Indexed: 06/09/2023]
Abstract
A novel method incorporating electrochemical (EC) modification and one-step pyrolysis is developed to prepare sustainable Fe3O4-based magnetic adsorbent (EC-Fe3O4/BC) via pyrolysis of FeCl3-pretreated corn straw-derived biochar under an electric field generated by graphite electrode. Morphological characterization revealed a uniform dispersion of rod-like crystalline Fe3O4 nanoparticles in the inner and outer structure of biochar. The EC modification also introduced more oxygen-containing functional groups, which contributed to an outstanding Pb adsorption capacity (113 mg g-1) and fast kinetics (0.054 g mg-1 h-1). Therefore, the EC modification is a simple and time-saving method to effectively fabricate magnetic biochar adsorbent for high-performance wastewater treatment.
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Affiliation(s)
- Fan Yang
- School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin 150030, China
| | - Shuaishuai Zhang
- School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin 150030, China
| | - Yuqing Sun
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
| | - Qing Du
- School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin 150030, China
| | - Jingpeng Song
- School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin 150030, China
| | - Daniel C W Tsang
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China.
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46
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Yang F, Zhang S, Cho DW, Du Q, Song J, Tsang DCW. Porous biochar composite assembled with ternary needle-like iron-manganese-sulphur hybrids for high-efficiency lead removal. BIORESOURCE TECHNOLOGY 2019; 272:415-420. [PMID: 30388579 DOI: 10.1016/j.biortech.2018.10.068] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2018] [Revised: 10/23/2018] [Accepted: 10/25/2018] [Indexed: 06/08/2023]
Abstract
Hierarchical porous biochar derived from corn straw containing ternary needle-like iron-manganese-sulphur composites (Fe-Mn-S@HCS) are fabricated, and their physicochemical characteristics and performance for Pb removal were examined in detail. Introduction of Mn (transition metal) into Fe-biochar composites can effectively alter the chemical state of Fe; simultaneous doping with S can enhance cation exchange for Pb removal. High uptake of Pb by Fe-Mn-S@HCS in a short time period was observed with the adsorption capacity of 181.5 mg g-1 and the pseudo-second-order rate constant of 0.075 g mg-1 h-1. Complexation, reduction, and precipitation were found to be involved in the Pb removal by Fe-Mn-S@HCS based on the results of HRTEM, XPS, and XRD analyses. This study demonstrated the feasibility of Fe-Mn-S biochar composites for high-efficiency Pb removal from aqueous solution.
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Affiliation(s)
- Fan Yang
- School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin 150030, China
| | - Shuaishuai Zhang
- School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin 150030, China; College of Science, Northeast Agricultural University, Harbin 150030, China
| | - Dong-Wan Cho
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
| | - Qing Du
- School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin 150030, China
| | - Jingpeng Song
- School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin 150030, China
| | - Daniel C W Tsang
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China.
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Yoo J, Jeon P, Tsang DCW, Kwon EE, Baek K. Ferric-enhanced chemical remediation of dredged marine sediment contaminated by metals and petroleum hydrocarbons. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2018; 243:87-93. [PMID: 30172127 DOI: 10.1016/j.envpol.2018.08.044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Revised: 07/21/2018] [Accepted: 08/16/2018] [Indexed: 06/08/2023]
Abstract
Sediments nearby harbors are dredged regularly, and the sediments require the stringent treatment to meet the regulations on reuse and mitigate the environmental burdens from toxic pollutants. In this study, FeCl3 was chosen as an extraction agent to treat marine sediment co-contaminated with Cu, Zn, and total petroleum hydrocarbons (TPH). In chemical extraction process, the extraction efficiency of Cu and Zn by FeCl3 was compared with the conventional one using inorganic acids (H2SO4 and HCl). Despite the satisfactory level for extraction of Cu (78.8%) and Zn (73.3%) by HCl (0.5 M) through proton-enhanced dissolution, one critical demerit, particularly acidified sediment, led to the unwanted loss of Al, Fe, and Mg by dissolution. Moreover, the vast amount of HCl required the huge amounts of neutralizing agents for the post-treatment of the sediment sample via the washing process. Despite a low concentration, extraction of Cu (70.1%) and Zn (69.4%) was done by using FeCl3 (0.05 M) through proton-enhanced dissolution, ferric-organic matter complexation, and oxidative dissolution of sulfide minerals. Ferric iron (Fe3+) was reduced to ferrous iron (Fe2+) with sulfide (S2-) oxidation during FeCl3 extraction. In consecutive chemical oxidations using hydrogen peroxide (H2O2) and persulfate (S2O82-), the resultant ferrous iron was used to activate the oxidants to effectively degrade TPH. S2O82- using FeCl3 solution (molar ratio of ferrous to S2O82- is 19.8-198.3) removed 42.6% of TPH, which was higher than that by H2O2 (molar ratio of ferrous to H2O2 is 1.2-6.1). All experimental findings suggest that ferric is effectively accommodated to an acid washing step for co-contaminated marine sediments, which leads to enhanced extraction, cost-effectiveness, and less environmental burden.
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Affiliation(s)
- Jongchan Yoo
- Center for Carbon Mineralization, Korea Institute of Geoscience and Mineral Resources (KIGAM), 124, Gwahak-ro, Yuseong-gu, Daejeon, 34132, Republic of Korea
| | - Pilyong Jeon
- Department of Environmental Engineering and Soil Environment Research Center, Chonbuk National University, Baekje-daero, Deokjin-gu, Jeonju, Jeollabuk-do, 54896, Republic of Korea
| | - Daniel C W Tsang
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
| | - Eilhann E Kwon
- Department of Environment and Energy, Sejong University, Seoul, 05006, Republic of Korea
| | - Kitae Baek
- Department of Environmental Engineering and Soil Environment Research Center, Chonbuk National University, Baekje-daero, Deokjin-gu, Jeonju, Jeollabuk-do, 54896, Republic of Korea.
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48
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Wei H, Zhang W, Zhuang L, Wang S, Tsang DCW, Qiu R. Two-stage multi-fraction first-order kinetic modeling for soil Cd extraction by EDTA. CHEMOSPHERE 2018; 211:1035-1042. [PMID: 30223318 DOI: 10.1016/j.chemosphere.2018.07.088] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2018] [Revised: 07/12/2018] [Accepted: 07/16/2018] [Indexed: 06/08/2023]
Abstract
A two stage multi-fraction 1st-order kinetic model was established herein, which incorporates Cd species distribution in the contaminated site, chelate dosage and washing time, and two distinct extraction mechanisms are also emphasized there. The model was found to successfully simulate the experimental data of Cd extraction by EDTA; with the obtained parameters, we also got a similarly good agreement in other two Cd-contaminated soils. All normalized root-mean-square error, the index of agreement and modeling efficiency values showed that this model can be used to predict Cd kinetic extraction process in different types of soils with an excellent validity. Both simulated and experimental results indicate that a greater EDTA dosage reasonably leads to a higher Cd extraction efficiency and a faster extraction by the direct EDTA-complex. Different Cd species also show different extraction behavior. Part of Cd species associated with Fe/Mn hydro(oxides) (FeMnOx) become destabilized by slow EDTA-promoted dissolution but not yet detached, leading to an apparently high removal efficiency of Cd in FeMnOx fraction dependent on EDTA dosage. While the removal of exchangeable Cd and carbonates (EXCH+CARB) seemed unchanged with the EDTA dosage, due to the transformation of the undetached Cd in FeMnOx fractions. However, an extreme dosage (i.e. molar ratio of EDTA to metal equal to 20 herein) may accelerate the detachment of these destabilized Cd species, resulting in a substantially high extraction efficiency of EXCH+CARB fraction.
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Affiliation(s)
- Hang Wei
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou, 510275, China; Soil Remediation Research Center of Sun Yat-sen University and Zhisheng Environmental Protection Group Ltd., Guangzhou, 510275, China
| | - Weihua Zhang
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou, 510275, China; Guangdong Provincial Key Lab of Environmental Pollution and Remediation Technology, Guangzhou, 510275, China; Shenzhen Research Institute, Sun Yat-sen University, Shenzhen, 518057, China
| | - Luwen Zhuang
- Department of Earth Sciences, Utrecht University, Utrecht, Netherlands
| | - Shizhong Wang
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou, 510275, China; Soil Remediation Research Center of Sun Yat-sen University and Zhisheng Environmental Protection Group Ltd., Guangzhou, 510275, China; Guangdong Provincial Key Lab of Environmental Pollution and Remediation Technology, Guangzhou, 510275, China.
| | - Daniel C W Tsang
- Department of Civil and Environmental Engineering, Hong Kong Polytechnic University, Hong Kong
| | - Rongliang Qiu
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou, 510275, China; Guangdong Provincial Key Lab of Environmental Pollution and Remediation Technology, Guangzhou, 510275, China.
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Guo X, Zhao G, Zhang G, He Q, Wei Z, Zheng W, Qian T, Wu Q. Effect of mixed chelators of EDTA, GLDA, and citric acid on bioavailability of residual heavy metals in soils and soil properties. CHEMOSPHERE 2018; 209:776-782. [PMID: 29960945 DOI: 10.1016/j.chemosphere.2018.06.144] [Citation(s) in RCA: 81] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Revised: 06/20/2018] [Accepted: 06/22/2018] [Indexed: 06/08/2023]
Abstract
Soil washing is an effective technology for the remediation of multi-metal contaminated soils. However, bioavailability of residual heavy metals in soils and soil properties could be changed during washing processes. This study investigated the effects of EDTA, FeCl3 and mixed chelators (MC) on bioavailability of residual heavy metals in soils and soil biological properties after soil washing. The results showed that soil washing by chelators successfully decreased the total concentration of heavy metals in soils, while it did not effectively decrease the exchangeable fraction of heavy metals, especially for calcareous contaminated soil. The toxic effects of the washed soils seemed to exhibit higher correlations with the changes in the soil properties such as soil pH and nutrient concentrations. As compared with FeCl3 and EDTA, MC tended to moderately change soil properties (e.g., pH, total N, available N, available P, and exchangeable K, Ca, and Mg). Additionally, MC-washed soil had the least influence on the soil enzymes activities, and had the highest germination and growth of Chinese cabbage. Accordingly, MC is a moderate washing solution in the removal of heavy metals from multi-metal contaminated soils, and had minimal negative effects on soil qualities.
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Affiliation(s)
- Xiaofang Guo
- School of Environment and Safety, Taiyuan University of Science and Technology, Taiyuan, 030024, China
| | - Guohui Zhao
- School of Environment and Safety, Taiyuan University of Science and Technology, Taiyuan, 030024, China
| | - Guixiang Zhang
- School of Environment and Safety, Taiyuan University of Science and Technology, Taiyuan, 030024, China
| | - Qiusheng He
- School of Environment and Safety, Taiyuan University of Science and Technology, Taiyuan, 030024, China.
| | - Zebin Wei
- College of Natural Resources and Environment, Key Laboratory of Ecological Agriculture of Ministry of Agriculture of China, South China Agricultural University, Guangzhou, 510642, China
| | - Wei Zheng
- School of Environment and Safety, Taiyuan University of Science and Technology, Taiyuan, 030024, China
| | - Tianwei Qian
- School of Environment and Safety, Taiyuan University of Science and Technology, Taiyuan, 030024, China
| | - Qitang Wu
- College of Natural Resources and Environment, Key Laboratory of Ecological Agriculture of Ministry of Agriculture of China, South China Agricultural University, Guangzhou, 510642, China
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50
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Zhai X, Li Z, Huang B, Luo N, Huang M, Zhang Q, Zeng G. Remediation of multiple heavy metal-contaminated soil through the combination of soil washing and in situ immobilization. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 635:92-99. [PMID: 29660731 DOI: 10.1016/j.scitotenv.2018.04.119] [Citation(s) in RCA: 115] [Impact Index Per Article: 19.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2017] [Revised: 04/08/2018] [Accepted: 04/08/2018] [Indexed: 06/08/2023]
Abstract
The remediation of heavy metal-contaminated soils is a great challenge for global environmental sciences and engineering. To control the ecological risks of heavy metal-contaminated soil more effectively, the present study focused on the combination of soil washing (with FeCl3) and in situ immobilization (with lime, biochar, and black carbon). The results showed that the removal rate of Cd, Pb, Zn, and Cu was 62.9%, 52.1%, 30.0%, and 16.7%, respectively, when washed with FeCl3. After the combined remediation (immobilization with 1% (w/w) lime), the contaminated soils showed 36.5%, 73.6%, 70.9%, and 53.4% reductions in the bioavailability of Cd, Cu, Pb, and Zn (extracted with 0.11M acetic acid), respectively, than those of the soils washed with FeCl3 only. However, the immobilization with 1% (w/w) biochar or 1% (w/w) carbon black after washing exhibited low effects on stabilizing the metals. The differences in effects between the immobilization with lime, biochar, and carbon black indicated that the soil pH had a significant influence on the lability of heavy metals during the combined remediation process. The activity of the soil enzymes (urease, sucrase, and catalase) showed that the addition of all the materials, including lime, biochar, and carbon black, exhibited positive effects on microbial remediation after soil washing. Furthermore, lime was the most effective material, indicating that low soil pH and high acid-soluble metal concentrations might restrain the activity of soil enzymes. Soil pH and nutrition were the major considerations for microbial remediation during the combined remediation. These findings suggest that the combination of soil washing and in situ immobilization is an effective method to amend the soils contaminated with multiple heavy metals.
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Affiliation(s)
- Xiuqing Zhai
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China
| | - Zhongwu Li
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China.
| | - Bin Huang
- Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Guangdong Institute of Eco-environment Science and Technology, Guangzhou 510650, PR China
| | - Ninglin Luo
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China
| | - Mei Huang
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China
| | - Qiu Zhang
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China
| | - Guangming Zeng
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China
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