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Dudło A, Michalska J, Turek-Szytow J, Kobyłecki R, Zarzycki R, Wichliński M, Surmacz-Górska J. Humic substances sorption from wastewater on the biochar produced from the waste materials. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 370:122366. [PMID: 39243649 DOI: 10.1016/j.jenvman.2024.122366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2024] [Revised: 08/09/2024] [Accepted: 08/30/2024] [Indexed: 09/09/2024]
Abstract
In recent years, increasing attention has been paid to the possibility of converting waste materials, e.g. manure, bio-waste, green waste, waste from the water and sewage industries (e.g. post-fermentation sludge), and agri-food waste into biochars (BCs) by pyrolysis. The ability of biochar to improve soil health and fertility is driving growing interest in its use as a soil amendment. A high soil stability of BCs and their excellent nutrient sorption properties are the main reasons for the superiority of such materials over other organic soil amendments. In addition, BCs can retain soil-relevant compounds, including humic substances (HSs). Since most of the resources used to produce humic fertilisers are non-renewable, the effluent from anaerobic digestion of sewage sludge (reject water, RW), which contains high levels of HSs, is considered a promising target for their recovery. In this study, the potential of ten BCs derived from pine, oak, straw, sunflower, and digestate at different pyrolysis temperatures for the recovery of HSs from RW was evaluated. The sorption of HSs on the applied BCs was conducted using contact method for 24 h and then determined spectrophotometrically. The most effective sorbents for HSs from RW were BCs obtained from straw in the low and high temperatures with the sorption capacity of 3.10 mg g-1 and 5.31 mg g-1, respectively. It was observed that the BCs produced from the same biomass at different pyrolysis temperatures had different sorption capacities for FA, HA, and a mixture of these compounds. The results indicated that BCs obtained from sunflower at different temperatures and oak at high temperature were the most promising sorbents for the recovery of HSs from RW. Such materials have the potential to be applied to soil and were selected for further evaluation due to their ability to enhance soil quality and immobilize pollutants. Further studies will assess their effectiveness in different soil conditions, their stability and persistence, and their impact on plant health and growth.
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Affiliation(s)
- Agnieszka Dudło
- Silesian University of Technology, Faculty of Energy and Environmental Engineering, Department of Environmental Biotechnology, Akademicka 2A, 44-100, Gliwice, Poland.
| | - Justyna Michalska
- Silesian University of Technology, Faculty of Energy and Environmental Engineering, Department of Environmental Biotechnology, Akademicka 2A, 44-100, Gliwice, Poland
| | - Jolanta Turek-Szytow
- Silesian University of Technology, Faculty of Energy and Environmental Engineering, Department of Environmental Biotechnology, Akademicka 2A, 44-100, Gliwice, Poland
| | - Rafał Kobyłecki
- Czestochowa University of Technology, Faculty of Infrastructure and Environment, Department of Advanced Energy Technologies, Dąbrowskiego 73, 42-201, Czestochowa, Poland
| | - Robert Zarzycki
- Czestochowa University of Technology, Faculty of Infrastructure and Environment, Department of Advanced Energy Technologies, Dąbrowskiego 73, 42-201, Czestochowa, Poland
| | - Michał Wichliński
- Czestochowa University of Technology, Faculty of Infrastructure and Environment, Department of Advanced Energy Technologies, Dąbrowskiego 73, 42-201, Czestochowa, Poland
| | - Joanna Surmacz-Górska
- Silesian University of Technology, Faculty of Energy and Environmental Engineering, Department of Environmental Biotechnology, Akademicka 2A, 44-100, Gliwice, Poland
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Gajaje K, Ultra VU, Nwaefuna AE, Zhou N. Phytostabilization of fly ash from a coalmine in Botswana and biovalorisation of the recovered Napier grass ( Pennisetum purpureum Schumach.). INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2024; 26:1291-1304. [PMID: 38349237 DOI: 10.1080/15226514.2024.2313559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/05/2024]
Abstract
The disposal of fly ash (FA) from coal power plants polluting the air, soil, and groundwater is a major environmental concern. Phytoremediation to rehabilitate fly ash dumpsites is a promising alternative but has practical concerns about the disposal of harvested biomass. This study investigated the effect of supplementing fly ash with fresh sewage sludge (FSS), aged sewage sludge, food waste, and compost (COM) to enhance the phytoremediation potential of Napier grass and its subsequent utilization for ethanol production. The highest removal of Mn (1196.12 g ha-1) and Ni (128.06 g ha-1) from FA could be obtained when Napier is grown in the presence of FSS and inorganic fertilizer (NPK). In addition, the highest bioethanol yield (19.31 g L-1) was obtained from Napier grown in fly ash with COM + NPK, thus providing additional economic benefits aside from the remediation process. Given the significant levels of heavy metals present in the pulp and bio-slurry after ethanol production, further research is required in this area to determine the best ways to utilize this waste such as converting it into biochar.
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Affiliation(s)
- Katumelo Gajaje
- Department of Earth and Environmental Science, Botswana International University of Science and Technology, Palapye, Botswana
| | - Venecio U Ultra
- Department of Earth and Environmental Science, Botswana International University of Science and Technology, Palapye, Botswana
| | - Anita E Nwaefuna
- Department of Biological Sciences and Biotechnology, Botswana International University of Science and Technology, Palapye, Botswana
| | - Nerve Zhou
- Department of Biological Sciences and Biotechnology, Botswana International University of Science and Technology, Palapye, Botswana
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Zhao Y, Zhang X, Jian Z, Gong Y, Meng X. Effect of landfill leachate on arsenic migration and transformation in shallow groundwater systems. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:5032-5042. [PMID: 38148459 DOI: 10.1007/s11356-023-31629-8] [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: 02/24/2023] [Accepted: 12/16/2023] [Indexed: 12/28/2023]
Abstract
Arsenic contamination of groundwater has affected human health and environmental safety worldwide. Hundreds of millions of people in more than 100 countries around the world are directly or indirectly troubled by arsenic-contaminated groundwater. In addition, arsenic contamination of groundwater caused by leakage of leachate from municipal solid waste landfills has occurred in some countries and regions, which has attracted widespread attention. Understanding how domestic waste landfill leachate affects the arsenic's migration and transformation in shallow groundwater is crucial for accurate assessment of the distribution and ecological hazards of arsenic in groundwater. Based on literature review, this study systematically summarized and discussed the basic characteristics of landfill leachate, the mechanism of arsenic pollution in groundwater, and the effect of landfill leachate on the migration and transformation of arsenic in groundwater. Combined with relevant research findings and practical experience, countermeasures and suggestions to limit the impact of landfill leachate on the migration and transformation of arsenic in groundwater are put forward.
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Affiliation(s)
- Ying Zhao
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China
- State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China
| | - Xinyi Zhang
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China.
- State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China.
| | - Zhiqiang Jian
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China
- State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China
| | - Yaping Gong
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China
- State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China
| | - Xiaoguang Meng
- Center for Environmental Systems, Department of Civil, Environmental & Ocean Engineering, Stevens Institute of Technology, Hoboken, NJ, 07030, USA
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Rahman S, Rahman IMM, Hasegawa H. Management of arsenic-contaminated excavated soils: A review. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 346:118943. [PMID: 37748284 DOI: 10.1016/j.jenvman.2023.118943] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 08/26/2023] [Accepted: 09/04/2023] [Indexed: 09/27/2023]
Abstract
Ongoing global sustainable development and underground space utilization projects have inadvertently exposed many excavated soils naturally contaminated with geogenic arsenic (As). Recent investigations have revealed that As in certain excavated soils, especially those originating from deep construction projects, has exceeded regulatory limits, threatening the environment and human health. While numerous remediation techniques exist for treating As-contaminated soil, the unique characteristics of geogenic As contamination in excavated soil require specific measures when leachable As content surpasses established regulatory limits. Consequently, several standard leaching tests have been developed globally to assess As leaching from contaminated soil. However, a comprehensive comparative analysis of these methods and their implementation in contaminated excavated soils remains lacking. Furthermore, the suitability and efficacy of most conventional and advanced techniques for remediating As-contaminated excavated soils remained unexplored. Therefore, this study critically reviews relevant literature and summarize recent research findings concerning the management and mitigation of geogenic As in naturally contaminated excavated soil. The objective of this study was to outline present status of excavated soil globally, the extent and mode of As enrichment, management and mitigation approaches for As-contaminated soil, global excavated soil recycling strategies, and relevant soil contamination countermeasure laws. Additionally, the study provides a concise overview and comparison of standard As leaching tests developed across different countries. Furthermore, this review assessed the suitability of prominent and widely accepted As remediation techniques based on their applicability, acceptability, cost-effectiveness, duration, and overall treatment efficiency. This comprehensive review contributes to a more profound comprehension of the challenges linked to geogenic As contamination in excavated soils.
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Affiliation(s)
- Shafiqur Rahman
- Graduate School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa, 920-1192, Japan.
| | - Ismail M M Rahman
- Institute of Environmental Radioactivity, Fukushima University, 1 Kanayagawa, Fukushima City, Fukushima, 960-1296, Japan.
| | - Hiroshi Hasegawa
- Institute of Science and Engineering, Kanazawa University, Kakuma, Kanazawa, 920-1192, Japan.
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Chen L, Yang W, Yang Y, Tu P, Hu S, Zeng Q. Three-season rotation of chicory-tobacco-peanut with high biomass and bioconcentration factors effectively remediates cadmium-contaminated farmland. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:64822-64831. [PMID: 35478394 DOI: 10.1007/s11356-022-20400-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2021] [Accepted: 04/19/2022] [Indexed: 06/14/2023]
Abstract
Traditional phytoremediation is one approach to remediate heavy metal pollution. In developing countries, the key factor in promoting practical application of phytoremediation in polluted soils is selecting suitable plants that are tolerant to heavy metals and also produce products with economic value. Therefore, a field experiment was conducted with a three-season chicory-tobacco-peanut rotation to determine effects on remediation of cadmium (Cd)-contaminated farmland in China. All crops had strong Cd accumulation capacity, with bioconcentration factors of 6.61 to 11.97 in chicory, 3.85 to 21.61 in tobacco, and 1.36 to 7.0 in peanut. Yield of total dry biomass reached 32.4 t ha-1, and the Cd phytoextraction efficiency was 10.3% per year. Aboveground tissues of the three crops accounted for 83.9 to 91.2% of total biomass in the rotation experiment. Cd content in peanut grain and oil met the National Food Safety Standard of China (0.5 mg kg-1, GB 2762-2017) and the Food Contaminant Limit of the European Union (0.1 mg kg-1, 18,812,006). Therefore, in addition to phytoremediation of Cd-contaminated soils, the chicory-tobacco-peanut rotation system can also produce economic benefits for local farmers.
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Affiliation(s)
- Linhan Chen
- College of Resources and Environment, Hunan Agricultural University, Changsha, 410128, Hunan, China
| | - Wenjun Yang
- College of Resources and Environment, Hunan Agricultural University, Changsha, 410128, Hunan, China
| | - Yang Yang
- College of Resources and Environment, Hunan Agricultural University, Changsha, 410128, Hunan, China
| | - Pengfei Tu
- College of Resources and Environment, Hunan Agricultural University, Changsha, 410128, Hunan, China
| | - Shengnan Hu
- College of Resources and Environment, Hunan Agricultural University, Changsha, 410128, Hunan, China
| | - Qingru Zeng
- College of Resources and Environment, Hunan Agricultural University, Changsha, 410128, Hunan, China.
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Qian G, Xu L, Li N, Wang K, Qu Y, Xu Y. Enhanced arsenic migration in tailings soil with the addition of humic acid, fulvic acid and thiol-modified humic acid. CHEMOSPHERE 2022; 286:131784. [PMID: 34371358 DOI: 10.1016/j.chemosphere.2021.131784] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Revised: 07/21/2021] [Accepted: 08/02/2021] [Indexed: 06/13/2023]
Abstract
Humus is an important parameter to affect the environmental fate of arsenic (As) in tailing soil. According to the batch and column experiment, the effects of humus (HS) including humic acid (HA), fulvic acid (FA) on the As release and basic properties of soil were studied in the soil from a mining region. In addition, HA was modified by 3-mercaptopropyltrimethoxysilane (3-MPTS) with different sulfur content (S%) to improve the release capacity of As. The results indicated that HS could destroy the binding of As with Fe, Mn, Al and Ca without affecting the basic properties of tailings soil, thus achieving the co-release of As and associated metals. Besides, the As release capacity of FA (25.47 %) was slightly higher than that of HA (21.90 %). The ability of thiol-modified HAs to release As from tailings soil after being modified with different S% of 3-MPTS was significantly improved, of which 2 % had the best treatment. The thiol groups (-SH) reached 45.00 % of total S. With the increase of S%, the surface thoil content, aromatization degree and total reduction capacity (TRC) of HA increased. The study demonstrated that HS and thiol-modified HA could promote the migration of As and could advance the treatment of heavy metal contaminated tailing soil.
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Affiliation(s)
- Guangren Qian
- SHU Center of Green Urban Mining & Industry Ecology, School of Environmental and Chemical Engineering, Shanghai University, No. 381 Nanchen Road, Shanghai, 200444, PR China
| | - Lu Xu
- SHU Center of Green Urban Mining & Industry Ecology, School of Environmental and Chemical Engineering, Shanghai University, No. 381 Nanchen Road, Shanghai, 200444, PR China
| | - Nuo Li
- SHU Center of Green Urban Mining & Industry Ecology, School of Environmental and Chemical Engineering, Shanghai University, No. 381 Nanchen Road, Shanghai, 200444, PR China
| | - Kaili Wang
- SHU Center of Green Urban Mining & Industry Ecology, School of Environmental and Chemical Engineering, Shanghai University, No. 381 Nanchen Road, Shanghai, 200444, PR China; Shanghai Municipal Engineering Design Institute (Group) CO., LTD., Shanghai, 200092, PR China
| | - Yangwei Qu
- SHU Center of Green Urban Mining & Industry Ecology, School of Environmental and Chemical Engineering, Shanghai University, No. 381 Nanchen Road, Shanghai, 200444, PR China
| | - Yunfeng Xu
- SHU Center of Green Urban Mining & Industry Ecology, School of Environmental and Chemical Engineering, Shanghai University, No. 381 Nanchen Road, Shanghai, 200444, PR China.
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7
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Costa ASPN, Nascimento ALA, Botero WG, Carvalho CM, Tonholo J, Santos JCC, Anunciação DS. Interaction between humic substances and arsenic species simulating environmental conditions. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 802:149779. [PMID: 34525680 DOI: 10.1016/j.scitotenv.2021.149779] [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: 05/20/2021] [Revised: 08/04/2021] [Accepted: 08/16/2021] [Indexed: 06/13/2023]
Abstract
The importance of evaluating how natural organic matter influences the mobility of arsenic species in an ecosystem is an environmental concern. This work aimed to evaluate the interaction between humic substances (HS) and four arsenic species of high toxicity [As(III), As(V), MMA(V), and DMA(V)] (HS-As) under the influence of HS concentration and pH. Next, the complexing capacity (CC) of HS by As(III) was determined in function of pH, ionic strength and co-existing ions. The free arsenic (Asfree) was determined after a tangential flow ultrafiltration procedure by hydride generation atomic fluorescence spectrometry. The better HS-As interactions for As(III) and As(V) at pH 10.5 reached 52% and 61%, respectively. The increase in pH and ionic strength, as well as co-existing ions increased the CC, which reached 1.57 mg of As(III) g-1 HS. We proposed a HS-As interaction model based on the inner and outer binding sites of HS from these results. The inner sites were occupied through hydrogen bonds, Pearson acid-base, hydrophobic, and van der Waals interactions for trivalent arsenic species, while the interactions through the outer sites for pentavalent arsenic species were mostly by hydrogen bonds and electrostatic forces. According to ecotoxicological studies against Artemia salina, the presence of HS decreased the toxicity of As(III) and As(V) as the lethal concentration increased from 5.81 to 8.82 mg L-1 and from 8.82 to 13.37 mg L-1, respectively. From the results through the proposed model, it was possible to successfully understand the interaction dynamic between soil HS and As(III), As(V), MMA(V) and DMA(V) under simulated environmental conditions.
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Affiliation(s)
- Aryanna S P N Costa
- Instituto de Química e Biotecnologia, Universidade Federal de Alagoas, Campus A. C. Simões, 57072-900 Maceió, AL, Brazil
| | - Amanda L A Nascimento
- Instituto de Química e Biotecnologia, Universidade Federal de Alagoas, Campus A. C. Simões, 57072-900 Maceió, AL, Brazil
| | - Wander G Botero
- Instituto de Química e Biotecnologia, Universidade Federal de Alagoas, Campus A. C. Simões, 57072-900 Maceió, AL, Brazil
| | - Cenira M Carvalho
- Instituto de Química e Biotecnologia, Universidade Federal de Alagoas, Campus A. C. Simões, 57072-900 Maceió, AL, Brazil
| | - Josealdo Tonholo
- Instituto de Química e Biotecnologia, Universidade Federal de Alagoas, Campus A. C. Simões, 57072-900 Maceió, AL, Brazil
| | - Josué C C Santos
- Instituto de Química e Biotecnologia, Universidade Federal de Alagoas, Campus A. C. Simões, 57072-900 Maceió, AL, Brazil.
| | - Daniela S Anunciação
- Instituto de Química e Biotecnologia, Universidade Federal de Alagoas, Campus A. C. Simões, 57072-900 Maceió, AL, Brazil.
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Yan D, Guo Z, Xiao X, Peng C, He Y, Yang A, Wang X, Hu Y, Li Z. Cleanup of arsenic, cadmium, and lead in the soil from a smelting site using N,N-bis(carboxymethyl)-L-glutamic acid combined with ascorbic acid: A lab-scale experiment. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 296:113174. [PMID: 34237673 DOI: 10.1016/j.jenvman.2021.113174] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Revised: 06/05/2021] [Accepted: 06/26/2021] [Indexed: 06/13/2023]
Abstract
Chemical washing has been carried out to remediate soil contaminated with heavy metals. In this study, the appropriate washing conditions for N,N-bis(carboxymethyl)-L-glutamic acid (GLDA) combined with ascorbic acid were determined to remove As, Cd, and Pb in the soil from the smelting site. The mechanism of heavy metal removal by the washing agent was also clarified. The results showed that heavy metals in the soil from the smelting site can be effectively removed. The removal percentages of As, Cd, and Pb in the soil from the smelting site were found to be 34.49%, 63.26%, and 62.93%, respectively, under optimal conditions (GLDA and ascorbic acid concentration ratio of 5:20, pH of 3, washing for 60 min, and the liquid-to-solid ratio of 10). GLDA combined with ascorbic acid efficiently removes As, Cd, and Pb from the soil through synergistic proton obstruction, chelation, and reduction. GLDA can chelate with iron and aluminum oxides while directly chelate with Cd and Pb. Ascorbic acid can reduce both Fe(III) to Fe(II) and As(III) to As0. The dissolution of As was promoted by indirectly preempting the binding sites of iron and aluminum in the soil while those of Cd and Pb were improved by directly interrupting the binding sites. This study suggested that GLDA combined with ascorbic acid is an effective cleanup technology to remove As, Cd, and Pb simultaneously from contaminated smelting site soils.
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Affiliation(s)
- Demei Yan
- Institute of Environmental Engineering, School of Metallurgy and Environment, Central South University, Changsha, 410083, China
| | - Zhaohui Guo
- Institute of Environmental Engineering, School of Metallurgy and Environment, Central South University, Changsha, 410083, China.
| | - Xiyuan Xiao
- Institute of Environmental Engineering, School of Metallurgy and Environment, Central South University, Changsha, 410083, China
| | - Chi Peng
- Institute of Environmental Engineering, School of Metallurgy and Environment, Central South University, Changsha, 410083, China
| | - Yalei He
- Institute of Environmental Engineering, School of Metallurgy and Environment, Central South University, Changsha, 410083, China
| | - Andi Yang
- Institute of Environmental Engineering, School of Metallurgy and Environment, Central South University, Changsha, 410083, China
| | - Xiaoyan Wang
- Institute of Environmental Engineering, School of Metallurgy and Environment, Central South University, Changsha, 410083, China
| | - Yulian Hu
- Institute of Environmental Engineering, School of Metallurgy and Environment, Central South University, Changsha, 410083, China
| | - Zhihui Li
- Institute of Environmental Engineering, School of Metallurgy and Environment, Central South University, Changsha, 410083, China
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Hong H, Wu S, Wang Q, Dai M, Qian L, Zhu H, Li J, Zhang J, Liu J, Li J, Lu H, Yan C. Fluorescent dissolved organic matter facilitates the phytoavailability of copper in the coastal wetlands influenced by artificial topography. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 790:147855. [PMID: 34091339 DOI: 10.1016/j.scitotenv.2021.147855] [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: 02/09/2021] [Revised: 05/14/2021] [Accepted: 05/14/2021] [Indexed: 06/12/2023]
Abstract
Dissolved organic matter (DOM) is a crucial driver in ecosystem services and a central part of the carbon transport and biological cycle in land-sea interaction. DOM exhibits characteristic environmental behavior in the coastal zone, but its sustainability is affected by expanding artificial topography (AT) construction. It requires combining analyses on AT-induced response of field fluorescent DOM (fDOM) and its quenching pattern under metal-complexation. Herein, we conducted systemic investigations into the spatiotemporal dynamics of fDOM compositions with further in-lab verification to study its Cu-binding capacity. We detected three humid-like fDOM components sensitive to AT. The total fDOM intensity was positively correlated with low molecular weight organic acid (LMWOA) extractable Cu and the Cu pools in above-ground biomass. The enriched fDOM serves as an ecological engineer by increasing the Cu mobility, confirmed by an in-lab fluorescence titration. The application of LMWOA greatly enhanced the intensity of one fDOM component, elevated its conditional stability constant, and decreased its quenched proportion, implying that LMWOA might extract part of Cu from fDOM complexation. The present work provides an "fDOM-LMWOA pump" explanation to suggest that fDOM is a novel ecological regulator on vegetation growth under the AT-induced matter accumulation.
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Affiliation(s)
- Hualong Hong
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, Xiamen University, Xiamen 361102, PR China; School of Plant and Environmental Sciences, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA
| | - Shengjie Wu
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, Xiamen University, Xiamen 361102, PR China
| | - Qiang Wang
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, Xiamen University, Xiamen 361102, PR China; State Key Laboratory of Grassland Agro-Ecosystems, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730000, PR China
| | - Minyue Dai
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, Xiamen University, Xiamen 361102, PR China
| | - Lu Qian
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, Xiamen University, Xiamen 361102, PR China
| | - Heng Zhu
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, Xiamen University, Xiamen 361102, PR China
| | - Junwei Li
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, Xiamen University, Xiamen 361102, PR China; Key Laboratory of the Ministry of Ecology of Rare and Endangered Species and Environmental Protection, Guangxi Normal University, Guilin 541004, Guangxi, PR China
| | - Jie Zhang
- Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, PR China
| | - Jingchun Liu
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, Xiamen University, Xiamen 361102, PR China
| | - Jian Li
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, Xiamen University, Xiamen 361102, PR China; School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, PR China
| | - Haoliang Lu
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, Xiamen University, Xiamen 361102, PR China
| | - Chongling Yan
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, Xiamen University, Xiamen 361102, PR China; State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361102, PR China.
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Klik B, Gusiatin ZM, Kulikowska D. Kinetics of Cu, Pb and Zn removal during soil flushing with washing agents derived from sewage sludge. Sci Rep 2021; 11:10067. [PMID: 33980879 PMCID: PMC8115151 DOI: 10.1038/s41598-021-89458-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Accepted: 04/27/2021] [Indexed: 11/09/2022] Open
Abstract
This paper presents the first tests of Cu (7875 mg/kg), Pb (1414 mg/kg) and Zn (566 mg/kg) removal from contaminated soil with sewage-sludge-derived washing agents (SS_WAs) (dissolved organic matter, DOM; soluble humic-like substances, HLS; soluble humic substances, SHS) and Na2EDTA (as a standard benchmark) in column experiments. Flow rates of 0.5 ml/min and 1 ml/min were used. Using a 1. order kinetic model, the kinetic constant (k), the maximum concentrations of each metal removed (Cmax), and the initial rates of metal removal (r) were established. At both flow rates, stable flow velocity was maintained for approximately eight pore volumes, for flushing times of 8 h (1.0 ml/min) and 16 h (0.5 ml/min). Although the flow rate did not influence k, it influenced Cmax: at 1 ml/min, Cmax values were higher than at 0.5 ml/min. For Cu and Zn, but not Pb, k was about twofold higher with Na2EDTA than with SS_WAs. Although Na2EDTA gave the highest kCu, Cmax,Cu was highest with DOM (Na2EDTA, 66%; DOM 73%). For Pb removal, HLS was the most effective SS_WA (77%; Na2EDTA was 80% effective). kZn was about twofold higher with Na2EDTA than with SS_WAs. Cmax,Zn was highest with HLS. The quick mobilization of Cu, Pb and Zn with most of the WAs corresponded to efficient metal removal from the exchangeable (F1) fraction.
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Affiliation(s)
- Barbara Klik
- Department of Environmental Biotechnology, Faculty of Geoengineering, University of Warmia and Mazury in Olsztyn, 10-719, Olsztyn, Poland
| | - Zygmunt M Gusiatin
- Department of Environmental Biotechnology, Faculty of Geoengineering, University of Warmia and Mazury in Olsztyn, 10-719, Olsztyn, Poland.
| | - Dorota Kulikowska
- Department of Environmental Biotechnology, Faculty of Geoengineering, University of Warmia and Mazury in Olsztyn, 10-719, Olsztyn, Poland
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Zhang Q, Zou D, Zeng X, Li L, Wang A, Liu F, Wang H, Zeng Q, Xiao Z. Effect of the direct use of biomass in agricultural soil on heavy metals __ activation or immobilization? ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 272:115989. [PMID: 33190985 DOI: 10.1016/j.envpol.2020.115989] [Citation(s) in RCA: 46] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2020] [Revised: 10/22/2020] [Accepted: 11/01/2020] [Indexed: 06/11/2023]
Abstract
In recent years, the biomass was directly used extensively in agriculture due to its low cost and convenience. Increasingly serious soil pollution of heavy metals may pose threats and risks to human health. Directly addition of biomass to soil may affect the bioavailability and content of heavy metals. Here, we reviewed the impact of direct application of oil cake, manure, sewage sludge, straw and municipal waste to soil on the form and concentration of heavy metals in soil, and also emphasized the role of biomass in soil heavy metals remediation. Heavy metals can be activated in a short term by the content of heavy metals in biomass, the production of low-molecular-weight organic acids by biomass application, and the oxidation of sulfides (except for ammoniation). However, heavy metals in soil can be immobilized by humic substances. These can be produced by biomass during a long-term application to soil. Moreover, the degree of immobilization depended on the kind of biomass. Biomass contaminated by heavy metals cannot be returned to the field directly. Therefore, Mitigating the activation of heavy metals in the early stage of biomass application is meaningful, especially for application of these biomass such as straw, sewage sludge and municipal waste. Future researches should focus on the heavy metal control on direct use of biomass in agricultural.
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Affiliation(s)
- Qiuguo Zhang
- College of Resources and Environment, Hunan Agricultural University, Changsha, Hunan, 410128, China; Key Laboratory for Rural Ecosystem Health in Dongting Lake Area of Hunan Province, Changsha, 410128, China
| | - Dongsheng Zou
- College of Resources and Environment, Hunan Agricultural University, Changsha, Hunan, 410128, China; Key Laboratory for Rural Ecosystem Health in Dongting Lake Area of Hunan Province, Changsha, 410128, China
| | - Xinyi Zeng
- College of Resources and Environment, Hunan Agricultural University, Changsha, Hunan, 410128, China; Key Laboratory for Rural Ecosystem Health in Dongting Lake Area of Hunan Province, Changsha, 410128, China
| | - Longcheng Li
- College of Resources and Environment, Hunan Agricultural University, Changsha, Hunan, 410128, China; Key Laboratory for Rural Ecosystem Health in Dongting Lake Area of Hunan Province, Changsha, 410128, China
| | - Andong Wang
- College of Resources and Environment, Hunan Agricultural University, Changsha, Hunan, 410128, China; Key Laboratory for Rural Ecosystem Health in Dongting Lake Area of Hunan Province, Changsha, 410128, China
| | - Fen Liu
- College of Resources and Environment, Hunan Agricultural University, Changsha, Hunan, 410128, China; Key Laboratory for Rural Ecosystem Health in Dongting Lake Area of Hunan Province, Changsha, 410128, China
| | - Hua Wang
- College of Resources and Environment, Hunan Agricultural University, Changsha, Hunan, 410128, China; Key Laboratory for Rural Ecosystem Health in Dongting Lake Area of Hunan Province, Changsha, 410128, China
| | - Qingru Zeng
- College of Resources and Environment, Hunan Agricultural University, Changsha, Hunan, 410128, China; Key Laboratory for Rural Ecosystem Health in Dongting Lake Area of Hunan Province, Changsha, 410128, China
| | - Zhihua Xiao
- College of Resources and Environment, Hunan Agricultural University, Changsha, Hunan, 410128, China; Key Laboratory for Rural Ecosystem Health in Dongting Lake Area of Hunan Province, Changsha, 410128, China.
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12
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New-Generation Washing Agents in Remediation of Metal-Polluted Soils and Methods for Washing Effluent Treatment: A Review. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17176220. [PMID: 32867145 PMCID: PMC7503436 DOI: 10.3390/ijerph17176220] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 08/21/2020] [Accepted: 08/24/2020] [Indexed: 11/29/2022]
Abstract
Soil quality is seriously reduced due to chemical pollution, including heavy metal (HM) pollution. To meet quality standards, polluted soils must be remediated. Soil washing/soil flushing offers efficient removal of heavy metals and decreases environmental risk in polluted areas. These goals can be obtained by using proper washing agents to remove HMs from soil. These washing agents should not pose unacceptable threats to humans and ecosystems, including soil composition. Currently, it is desirable to use more environmentally and economically attractive washing agents instead of synthetic, environmentally problematic chemicals (e.g., ethylenediaminetetraacetic acid (EDTA)). The usefulness of novel washing agents for treatment of heavy metal-contaminated soils is being intensively developed, in terms of the efficiency of HM removal and properties of washed soils. Despite the unquestionable effectiveness of soil washing/flushing, it should be remembered that both methods generate secondary fluid waste (spent washing solution), and the final stage of the process should be treatment of the contaminated spent washing solution. This paper reviews information on soil contamination with heavy metals. This review examines the principles and status of soil washing and soil flushing. The novel contribution of this review is a presentation of the sources and characteristics of novel washing agents and chemical substitutes for EDTA, with their potential for heavy metal removal. Methods for treating spent washing solution are discussed separately.
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13
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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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14
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Shi M, Zhao X, Zhu L, Wu J, Mohamed TA, Zhang X, Chen X, Zhao Y, Wei Z. Elucidating the negative effect of denitrification on aromatic humic substance formation during sludge aerobic fermentation. JOURNAL OF HAZARDOUS MATERIALS 2020; 388:122086. [PMID: 31972435 DOI: 10.1016/j.jhazmat.2020.122086] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Revised: 01/09/2020] [Accepted: 01/13/2020] [Indexed: 06/10/2023]
Abstract
Humic substance (HS), as an aromatic compound, is the core product of aerobic fermentation. Denitrification-dependent degradation of aromatic compounds have been repeatedly observed in environment. However, few studies have elucidated the relationship between denitrification and aromatic HS during sludge aerobic fermentation. This study was conducted to investigate the effect of enhanced denitrification on aromatic HS formation. On the 24th day of sludge aerobic fermentation, five tests (CK, Run1, Run2, Run3 and Run4) were executed, and nitrate concentrations were adjusted to 480 ± 20, 500 ± 20, 1000 ± 20, 1500 ± 20 and 2000 ± 20 mg/kg with potassium nitrate, respectively. Analytical results demonstrated that nitrate addition increased denitrifying genes abundance and enhanced denitrification, which further reduced aromatic HS formation (p < 0.05). Especially in Run3, the concentrations of HS and humic acid on the 52nd day dramatically decreased by 12.9 % and 34.2 % in comparison with those on the 31st day. High-throughput sequencing revealed that enhanced denitrification effectively stimulated the metabolism of denitrifying microorganisms with aromatic-degrading capability. Co-occurring network analysis indicated that some keystone taxa of denitrification aromatic-degrading microorganisms involved in the conversion of nitrate to nitrite were the most crucial for enhancing denitrification and reducing aromatic HS formation.
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Affiliation(s)
- Mingzi Shi
- College of Life Science, Northeast Agricultural University, Harbin 150030, China
| | - Xinyu Zhao
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Longji Zhu
- College of Life Science, Northeast Agricultural University, Harbin 150030, China
| | - Junqiu Wu
- College of Life Science, Northeast Agricultural University, Harbin 150030, China
| | - Taha Ahmed Mohamed
- College of Life Science, Northeast Agricultural University, Harbin 150030, China; Soil, Water and Environment Research Institute, Agricultural Research Center, Giza, Egypt
| | - Xu Zhang
- College of Life Science, Northeast Agricultural University, Harbin 150030, China
| | - Xiaomeng Chen
- College of Life Science, Northeast Agricultural University, Harbin 150030, China
| | - Yue Zhao
- College of Life Science, Northeast Agricultural University, Harbin 150030, China.
| | - Zimin Wei
- College of Life Science, Northeast Agricultural University, Harbin 150030, China.
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Wen J, Xing L, Wang Y, Zeng G. Chemical and microbiological responses of heavy metal contaminated sediment subject to washing using humic substances. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:26696-26705. [PMID: 31292878 DOI: 10.1007/s11356-019-05900-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2019] [Accepted: 07/03/2019] [Indexed: 06/09/2023]
Abstract
Washing of contaminated soils or sediments using humic substances (HS) extracted either from source-rich materials or compost has been tested effective to remove various heavy metals. Nevertheless, the remaining chemical fractionation of metals and post-washing biological responses were not discussed in previous research. In this study, we used a HS extracted from green waste compost to wash off Cd, As, and Ni from a contaminated sediment, and evaluated the washing effect on sediment microbes by measuring a series of indexes with regard to microbial biomass and enzyme activities. Results showed that HS washing was more effective in removing the cationic metals Cd and Ni than the anionic metal As. The highest HS dose of 2000 mg L-1 resulted in 24.5-, 33.1-, and 12-fold increases of removal for Cd, Ni, and As, respectively. The remaining Cd and As were found to migrate to less stable fractions, whereas the remaining Ni was dominantly found in the residual fraction. Increases of metal removal efficiency, microbial biomass, and dehydrogenase activity were found to correlate with the increase of HS concentrations. Increasing doses of HS slightly altered sediment pH to the lower range but did not cause any significant effect on microbial activities. The study proves that HS washing is indeed a more environmental-friendly strategy than many existing washing agents which have exerted various side effects on soil properties.
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Affiliation(s)
- Jia Wen
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, P. R. China.
- Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, P. R. China.
| | - Lang Xing
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, P. R. China
- Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, P. R. China
| | - Yongxu Wang
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, P. R. China
- Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, P. R. China
| | - Guangming Zeng
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, P. R. China
- Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, P. R. China
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16
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Zhang S, Wen J, Hu Y, Fang Y, Zhang H, Xing L, Wang Y, Zeng G. Humic substances from green waste compost: An effective washing agent for heavy metal (Cd, Ni) removal from contaminated sediments. JOURNAL OF HAZARDOUS MATERIALS 2019; 366:210-218. [PMID: 30528591 DOI: 10.1016/j.jhazmat.2018.11.103] [Citation(s) in RCA: 59] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Revised: 11/27/2018] [Accepted: 11/28/2018] [Indexed: 06/09/2023]
Abstract
In this study, humic substances (HS) selected from 8 composting groups (peanut straw, sesame straw, corn straw and deciduous leaves, with or without grape marc) were used to remove Cd and Ni from artificially contaminated sediments. Sesame straw compost appeared to have the highest removal capacity for heavy metals through a series comparison on Cd removal efficiency, yield of HS and fulvic acids (FA), and seed germination index. The selected sesame HS was further used to wash two contaminated sediments of varying properties (a clay type for sediment 1 and a silty loam for sediment 2). Batch desorption experiments were conducted to determine the optimum HS concentration, equilibrium time, pH, solid-to-liquid ratio, and washing frequency. Under optimum conditions, a triple washing removed 74.16% of Cd and 42.91% of Ni from sediment 1, and 86.88% of Cd and 43.84% of Ni from sediment 2, respectively, whereas a commercial FA only achieved half of the efficiency. After washing, both sediments were identified with increased contents of total organic matter total nitrogen and phosphorus. Therefore, HS from the sesame straw compost is a cost-effective, efficient and environmental-friendly washing agent to remove heavy metals from contaminated sediments.
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Affiliation(s)
- Siyu 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
| | - Jia Wen
- 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.
| | - Yi Hu
- 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
| | - Ying Fang
- 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
| | - Haibo 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
| | - Lang Xing
- 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
| | - Yongxu Wang
- 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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17
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Gusiatin ZM, Klik B, Kulikowska D. Tannic acid for remediation of historically arsenic-contaminated soils. ENVIRONMENTAL TECHNOLOGY 2019; 40:1050-1061. [PMID: 29235921 DOI: 10.1080/09593330.2017.1417490] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2017] [Accepted: 12/08/2017] [Indexed: 06/07/2023]
Abstract
Soil washing effectively and permanently decreases soil pollution. Thus, it can be considered for the removal of the most toxic elements, for example arsenic (As). In this study, historically As-contaminated soils (2041-4294 mg/kg) were remediated with tannic acid (TA) as the washing agent. The scope of this study included optimization of the operational conditions of As removal, determination of As distribution in soil before and after double soil washing, and measurement of TA loss during washing. The optimum conditions for As removal were 4% TA, pH 4 and 24 h washing time. The average As removal after single and double washings was 38% and 63%, respectively. TA decreased As content in amorphous and poorly crystalline oxides by >90%. Although TA increased the amount of As in the easily mobilizable As fraction, the stability of As in washed soils increased, with reduced partition indexes of 0.52-0.66 after washing. The maximum capacity of the soils to adsorb TA (qmax) was 50.2-70.4 g C/kg. TA sorption was higher at alkaline than at acidic conditions. Only TA removes As from soils effectively if the proportion of As in amorphous and poorly crystalline oxides is high. Thus, it can be considered for remediation of historically contaminated soils.
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Affiliation(s)
- Zygmunt Mariusz Gusiatin
- a Department of Environmental Biotechnology , University of Warmia and Mazury in Olsztyn , Olsztyn , Poland
| | - Barbara Klik
- a Department of Environmental Biotechnology , University of Warmia and Mazury in Olsztyn , Olsztyn , Poland
| | - Dorota Kulikowska
- a Department of Environmental Biotechnology , University of Warmia and Mazury in Olsztyn , Olsztyn , Poland
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18
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Wang G, Zhang S, Zhong Q, Xu X, Li T, Jia Y, Zhang Y, Peijnenburg WJGM, Vijver MG. Effect of soil washing with biodegradable chelators on the toxicity of residual metals and soil biological properties. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 625:1021-1029. [PMID: 29996399 DOI: 10.1016/j.scitotenv.2018.01.019] [Citation(s) in RCA: 74] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Revised: 01/02/2018] [Accepted: 01/03/2018] [Indexed: 06/08/2023]
Abstract
Soil washing with chelators is a promising and efficient method of remediating metals-contaminated soils. However, the toxicity of residual metals and the effects on soil microbial properties have remained largely unknown after washing. In this study, we employed four biodegradable chelators for removal of metals from contaminated soils: iminodisuccinic acid (ISA), glutamate-N,N-diacetic acid (GLDA), glucomonocarbonic acid (GCA), and polyaspartic acid (PASP). The maximum removal efficiencies for Cd, Pb, and Zn of 85, 55, and 64% and 45, 53, and 32% were achieved from farmland soil and mine soil using biodegradable chelators, respectively. It was found that the capacity of ISA and GLDA to reduce the labile fraction of Cd, Pb, and Zn was similar to that of the conventional non-biodegradable chelator ethylenediaminetetraacetic acid (EDTA). The leachability, mobility, and bioaccessibility of residual metals after washing decreased notably in comparison to the original soils, thus mitigating the estimated environmental and human health risks. Soil β-glucosidase activity, urease activity, acid phosphatase activity, microbial biomass nitrogen, and microbial biomass phosphorus decreased in the treated soils. However, compared with EDTA treatment, soil enzyme activities distinctly increased by 5-94% and overall microbial biomass slightly improved in the remediated soils, which would facilitate reuse of the washed soils. Based on soil toxicity tests that employed wheat seed germination as the endpoint of assessment, the washed soils exhibited only slight effects especially after ISA and GLDA treatments, following high-efficiency metal removal. Hence, ISA and GLDA appear to possess the greatest potential to rehabilitate polluted soils with limited toxicity remaining.
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Affiliation(s)
- Guiyin Wang
- College of Environmental Science, Sichuan Agricultural University, Wenjiang 611130, China; Institute of Environmental Sciences (CML), Leiden University, P. O. Box 9518, 2300 RA Leiden, The Netherlands
| | - Shirong Zhang
- College of Environmental Science, Sichuan Agricultural University, Wenjiang 611130, China.
| | - Qinmei Zhong
- College of Environmental Science, Sichuan Agricultural University, Wenjiang 611130, China
| | - Xiaoxun Xu
- College of Environmental Science, Sichuan Agricultural University, Wenjiang 611130, China
| | - Ting Li
- College of Resources, Sichuan Agricultural University, Wenjiang 611130, China
| | - Yongxia Jia
- College of Resources, Sichuan Agricultural University, Wenjiang 611130, China
| | - Yanzong Zhang
- College of Environmental Science, Sichuan Agricultural University, Wenjiang 611130, China
| | - 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, 3720 BA Bilthoven, The Netherlands
| | - Martina G Vijver
- Institute of Environmental Sciences (CML), Leiden University, P. O. Box 9518, 2300 RA Leiden, The Netherlands
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Xiang Y, Xiang Y, Wang L, Li X. Effects of sewage sludge modified by coal gasification slag and electron beam irradiation on the growth of Alhagi sparsifolia Shap. and transfer of heavy metals. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:11636-11645. [PMID: 29429113 DOI: 10.1007/s11356-018-1253-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Accepted: 01/09/2018] [Indexed: 06/08/2023]
Abstract
A greenhouse experiment was performed to investigate the feasibility of sewage sludge modified by coal gasification slag pretreatment and electron beam irradiation in soil application for cultivation of Alhagi sparsifolia Shap . The results showed that modified sewage sludge had an active effect on the growth of Alhagi sparsifolia Shap . The sandy soil and modified sludge at the volume ratio of 2:1 were optimal, and the growth potential of Alhagi sparsifolia Shap . was highest. In the sandy soil, the values of bioconcentration factor of most heavy metals were below 1.0 except for Zn and Cu. The average bioconcentration factor values of heavy metals in Alhagi sparsifolia Shap . decreased in a sequence of Zn>Cu>Ni> Mn>Co>Pb>Cr>Fe>V>Cd>Mo for all treatments. Alhagi sparsifolia Shap . could decrease the eco-toxicity and bioavailability of Ni, Fe, and Mo in all mixed soil, and Alhagi sparsifolia Shap . could reduce the eco-toxicity and bioavailability of all heavy metals discussed in this study (except for Mn) in the mixed soil of SS:MSS = 2:1.
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Affiliation(s)
- Yulin Xiang
- College of Chemistry and Chemical Engineering, Yulin University, Yulin, Shaanxi Province, 719000, China.
| | - Yuxiu Xiang
- Department of Management Engineering, Qiqihar Institute of Engineering, Qiqihar, Heilongjiang Province, 161005, China
| | - Lipeng Wang
- College of Chemistry and Chemical Engineering, Yulin University, Yulin, Shaanxi Province, 719000, China
| | - Xin Li
- College of Chemistry and Chemical Engineering, Yulin University, Yulin, Shaanxi Province, 719000, China
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