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Shen H, Zhou C, Xu S, Huang Y, Shi J, Liu G, Wu L, Dou C. Study on the solidification performance and mechanism of heavy metals by sludge/biomass ash ceramsites, biochar and biomass ash. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2024; 46:78. [PMID: 38367092 DOI: 10.1007/s10653-023-01846-8] [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: 10/31/2023] [Accepted: 12/21/2023] [Indexed: 02/19/2024]
Abstract
Industrial by-products are stored in large quantities in the open, leading to wasted resources and environmental pollution, and the natural environment is similarly faced with phosphate depletion and serious water and soil pollution. This study uses these by-products to produce a new sludge/biomass ash ceramsite that will be used to adsorb nitrogen and phosphorus from wastewater, and solidify heavy metals in the soil while releasing Olsen P. The sludge/biomass ash ceramsites are made using sewage sludge and biomass ash in a certain ratio calcined at high temperatures and modified for the adsorption of nitrogen and phosphorus from wastewater. Sludge/biomass ash ceramsites before and after phosphorus adsorption, biochar and biomass ash were compared to analyze their heavy metal adsorption capacity and potential as phosphate fertilizer. After phosphorus adsorption, the sludge/biomass ash ceramsites released effective phosphorus steadily and rapidly in the soil, with a greater initial release than biochar and biomass ash, and the ceramsites were in a granular form that could be easily recycled. Biochar and biomass residue, due to their surface functional groups, are better at solidifying heavy metals than sludge/biomass ash ceramsites. Biochar, biomass ash and sludge/biomass ash ceramsites significantly reduced the concentrations of Cd, Cu, Pb and Zn in the soil. Correlation analysis demonstrated that there was a synergistic relationship between the increase in soil Olsen P content and the change in pH, with the increase in soil Olsen P content and the increase in pH contributing to heavy metal solidification.
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Affiliation(s)
- Hexin Shen
- School of Resources and Environmental Engineering, Hefei University of Technology, No. 193, Road Tunxi, Hefei, 230009, China
| | - Chuncai Zhou
- School of Resources and Environmental Engineering, Hefei University of Technology, No. 193, Road Tunxi, Hefei, 230009, China.
| | - Shihai Xu
- School of Resources and Environmental Engineering, Hefei University of Technology, No. 193, Road Tunxi, Hefei, 230009, China
| | - Yan Huang
- School of Resources and Environmental Engineering, Hefei University of Technology, No. 193, Road Tunxi, Hefei, 230009, China
| | - Jiaqian Shi
- School of Resources and Environmental Engineering, Hefei University of Technology, No. 193, Road Tunxi, Hefei, 230009, China
| | - Guijian Liu
- School of Earth and Space Sciences, University of Science and Technology of China, No. 96, Road Jinzhai, Hefei, 230026, China
| | - Lei Wu
- Anhui Provincial Academy of Eco-Environmental Science Research, Hefei, 230061, China
| | - Changming Dou
- Anhui Provincial Academy of Eco-Environmental Science Research, Hefei, 230061, China
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Jing H, Yang W, Chen Y, Yang L, Zhou H, Yang Y, Zhao Z, Wu P, Zia-Ur-Rehman M. Exploring the mechanism of Cd uptake and translocation in rice: Future perspectives of rice safety. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 897:165369. [PMID: 37433335 DOI: 10.1016/j.scitotenv.2023.165369] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2023] [Revised: 07/03/2023] [Accepted: 07/05/2023] [Indexed: 07/13/2023]
Abstract
Cadmium (Cd) contamination in rice fields has been recognized as a severe global agro-environmental issue. To reach the goal of controlling Cd risk, we must pay more attention and obtain an in-depth understanding of the environmental behavior, uptake and translocation of Cd in soil-rice systems. However, to date, these aspects still lack sufficient exploration and summary. Here, we critically reviewed (i) the processes and transfer proteins of Cd uptake/transport in the soil-rice system, (ii) a series of soil and other environmental factors affecting the bioavailability of Cd in paddies, and (iii) the latest advances in regard to remediation strategies while producing rice. We propose that the correlation between the bioavailability of Cd and environmental factors must be further explored to develop low Cd accumulation and efficient remediation strategies in the future. Second, the mechanism of Cd uptake in rice mediated by elevated CO2 also needs to be given more attention. Meanwhile, more scientific planting methods (direct seeding and intercropping) and suitable rice with low Cd accumulation are important measures to ensure the safety of rice consumption. In addition, the relevant Cd efflux transporters in rice have yet to be revealed, which will promote molecular breeding techniques to address the current Cd-contaminated soil-rice system. The potential for efficient, durable, and low-cost soil remediation technologies and foliar amendments to limit Cd uptake by rice needs to be examined in the future. Conventional breeding procedures combined with molecular marker techniques for screening rice varieties with low Cd accumulation could be a more practical approach to select for desirable agronomic traits with low risk.
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Affiliation(s)
- Haonan Jing
- Key Laboratory of Karst Geological Resources and Environment, Ministry of Education, College of Resource and Environmental Engineering, Guizhou University, Guiyang 550025, China
| | - Wentao Yang
- Key Laboratory of Karst Geological Resources and Environment, Ministry of Education, College of Resource and Environmental Engineering, Guizhou University, Guiyang 550025, China.
| | - Yonglin Chen
- Key Laboratory of Karst Geological Resources and Environment, Ministry of Education, College of Resource and Environmental Engineering, Guizhou University, Guiyang 550025, China
| | - Liyu Yang
- Key Laboratory of Karst Geological Resources and Environment, Ministry of Education, College of Resource and Environmental Engineering, Guizhou University, Guiyang 550025, China
| | - Hang Zhou
- College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China
| | - Yang Yang
- College of Environment and Ecology, Hunan Agriculture University, Changsha 410128, China
| | - Zhenjie Zhao
- Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, School of Public Health, Guizhou Medical University, Guiyang 550025, China
| | - Pan Wu
- Key Laboratory of Karst Geological Resources and Environment, Ministry of Education, College of Resource and Environmental Engineering, Guizhou University, Guiyang 550025, China
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Ibrahim MM, Liu D, Wu F, Chen Y, He Z, Zhang W, Xing S, Mao Y. Nitrogen retention potentials of magnesium oxide- and sepiolite-modified biochars and their impacts on bacterial distribution under nitrogen fertilization. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 866:161358. [PMID: 36603627 DOI: 10.1016/j.scitotenv.2022.161358] [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: 09/02/2022] [Revised: 11/29/2022] [Accepted: 12/30/2022] [Indexed: 06/17/2023]
Abstract
Mitigating the loss and negative impacts of reactive N from fertilized soils remains a global environmental challenge. To optimize N retention by biochar, bamboo and pig manure biochars were modified as MgO- and sepiolite-biochar composites and characterized. Novel soil application of the modified biochars and their raw forms were comparatively evaluated for N-retention in a fertilized soil leached for 90 days in a column experiment. Changes in N-cycling-related enzyme and bacterial structure were also reported after 90 days. Results revealed low leaching losses of NH4+, which reduced over time across all the treatments. However, while sole fertilizer (F) increased the initial and cumulative NO3- leached from the soil, the MgO-bamboo biochar (MgOBF) and sepiolite-bamboo biochar (SBF) treatments reduced leachate NO3- by 22.1 % and 10.5 % compared to raw bamboo biochar (BBF) treatment. However, 15.5 % more NO3- was leached from the MgO-pig manure biochar-treated soil (MgOPF) compared to its raw biochar treatment (PMBF) after 90 days. Dissolved organic N leached was reduced by 9.2 % and 0.5 % in MgOBF and SBF, as well as 15.4 % and 40.5 % in MgOPF and SPF compared to their respective raw forms. The total N of the biochars, adjustment of surface charges, cation exchange capacity, surface area, pore filling effects, and the formation of potential MgN precipitates on the modified-biochar surfaces regulated N leaching/retention. In addition, the modified biochar treatments reduced the hydrolysis of urea and stimulated some nitrate-reduction-related bacteria crucial for NO3- retention. Hence, unlike the raw biochar and MgOPF treatments, MgOBF, SBF, and SPF hold promise in mitigating inorganic-N losses from fertilized soils while improving the soil's chemical properties.
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Affiliation(s)
- Muhammed Mustapha Ibrahim
- College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, Fujian Province, China; Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China; Key Research Laboratory of Soil Ecosystem Health and Regulation in Fujian Provincial University, Fuzhou 350002, Fujian Province, China
| | - Dongming Liu
- College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, Fujian Province, China; Key Research Laboratory of Soil Ecosystem Health and Regulation in Fujian Provincial University, Fuzhou 350002, Fujian Province, China
| | - Fengying Wu
- College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, Fujian Province, China; Key Research Laboratory of Soil Ecosystem Health and Regulation in Fujian Provincial University, Fuzhou 350002, Fujian Province, China
| | - Yulin Chen
- College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, Fujian Province, China; Key Research Laboratory of Soil Ecosystem Health and Regulation in Fujian Provincial University, Fuzhou 350002, Fujian Province, China
| | - Zhengxuan He
- College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, Fujian Province, China; Key Research Laboratory of Soil Ecosystem Health and Regulation in Fujian Provincial University, Fuzhou 350002, Fujian Province, China
| | - Weiting Zhang
- College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, Fujian Province, China; Key Research Laboratory of Soil Ecosystem Health and Regulation in Fujian Provincial University, Fuzhou 350002, Fujian Province, China
| | - Shihe Xing
- College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, Fujian Province, China; Key Research Laboratory of Soil Ecosystem Health and Regulation in Fujian Provincial University, Fuzhou 350002, Fujian Province, China
| | - Yanling Mao
- College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, Fujian Province, China; Key Research Laboratory of Soil Ecosystem Health and Regulation in Fujian Provincial University, Fuzhou 350002, Fujian Province, China; Fujian Colleges and Universities Engineering Research Institute of Conservation and Utilization of Natural Bioresources, College of Forestry, Fujian Agriculture and Forestry University, Fuzhou 350002, Fujian Province, China.
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Gao Z, Liu Y, Huang Q, Li B, Ma T, Qin X, Zhao L, Sun Y, Xu Y. Effects of sepiolite and biochar on the photosynthetic and antioxidant systems of pakchoi under Cd and atrazine stress. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART. B, PESTICIDES, FOOD CONTAMINANTS, AND AGRICULTURAL WASTES 2022; 57:897-904. [PMID: 36263769 DOI: 10.1080/03601234.2022.2133922] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Sepiolite and biochar effectively immobilize Cd and atrazine in vegetable soils. This study further investigated the effects of sepiolite and biochar on the photosynthetic and antioxidative defence systems of pakchoi under Cd and atrazine stress. The results showed that after adding sepiolite and biochar to contaminated soil, the chlorophyll content was restored and the photosynthetic rate increased, whereas the soluble sugar content of pakchoi decreased. In the antioxidant system of the plants, the activities of peroxidase, ascorbate peroxidase, and superoxide dismutase decreased, while the activity of catalase increased. The content of malondialdehyde, glutathione, and O2·- increased, but the content of H2O2 decreased. In general, remediation materials reduced the bioavailability of Cd and atrazine, reduced the stress on pakchoi, and restored and improved the rate of photosynthesis and function of antioxidants.
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Affiliation(s)
- Zhixin Gao
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin, China
- College of Resources and Environment, Northeast Agricultural University, Harbin, China
| | - Yetong Liu
- Tianjin Academy of Agricultural Sciences, Tianjin, China
| | - Qingqing Huang
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin, China
| | - Boyan Li
- Agro-Ecological Environment Monitoring and Agricultural Products Quality Inspection Center of Tianjin, Tianjin, China
| | - Tiantian Ma
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin, China
| | - Xu Qin
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin, China
| | - Lijie Zhao
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin, China
| | - Yuebing Sun
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin, China
| | - Yingming Xu
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin, China
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5
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Recent Progress of Natural Mineral Materials in Environmental Remediation. Catalysts 2022. [DOI: 10.3390/catal12090996] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Organic contaminants, volatile organic compounds (VOCs), and heavy metals have posed long-term threats to the ecosystem and human health. Natural minerals have aroused widespread interest in the field of environmental remediation due to their unique characteristics such as rich resources, environmentally benign, and excellent photoelectric properties. This review briefly introduced the contributions of natural minerals such as sulfide minerals, oxide minerals, and oxysalt minerals in pollution control, which include organic pollution degradation, sterilization, air purification (NO VOCs oxidation), and heavy metal treatment by means of photocatalysis, Fenton catalysis, persulfate activation, and adsorption process. At last, the future challenges of natural mineral materials in pollution control are also outlooked.
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6
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Huang R, Li Y, Li F, Yin X, Li R, Wu Z, Liang X, Li Z. Phosphate fertilizers facilitated the Cd contaminated soil remediation by sepiolite: Cd mobilization, plant toxicity, and soil microbial community. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2022; 234:113388. [PMID: 35272193 DOI: 10.1016/j.ecoenv.2022.113388] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2021] [Revised: 02/26/2022] [Accepted: 03/03/2022] [Indexed: 06/14/2023]
Abstract
In-situ immobilization does not remove Cd from the contaminated soil. It is vital to investigate the effects of fertilizers on soil Cd mobility during remediation with amendments. In the current study, a pot experiment was conducted to investigate the effects of calcium magnesium phosphate (CMP) and calcium superphosphate (SSP) on the remediation of Cd-contaminated soil by sepiolite. We mainly focused on changes in soil Cd immobilization, plant toxicity, and soil microbial communities after applying two phosphates during Cd-contaminated soil remediation by sepiolite. The results demonstrated that sepiolite decreased Cd concentration in brown rice, straw, and roots by 32.66%, 38.89%, and 30.94%, respectively. During soil remediation by sepiolite, the Cd concentrations of brown rice and straw were not affected by CMP or SSP, except for the treatment with sepiolite plus high-dose CMP. Sepiolite significantly decreased HCl-extractable Cd and DTPA-extractable Cd by 32.21% and 10.50%, respectively. During soil remediation by sepiolite, the HCl-extractable and DTPA-extractable Cd further decreased with CMP or SSP. The decreasing amplitude with CMP was 40.57-72.60% and 7.05-14.53%, and that of SSP was 37.68-59.66% and 20.71-25.07%, respectively. The superoxide dismutase, peroxidase, catalase activities, and malondialdehyde concentration in rice roots decreased inordinately with the addition of sepiolite, CMP, and SSP, indicating that the application of sepiolite, CMP, or SSP alleviated Cd-induced rice root stress and protected rice roots from Cd toxicity. Alpha diversity estimators (including the Chao, ACE, and Shannon indices) indicated that sepiolite, CMP, or SSP applications had no adverse effects on soil bacterial richness and diversity. Hierarchical clustering analysis revealed that the two phosphate fertilizers and sepiolite were the main factors affecting changes in the bacterial communities structure. Redundancy analysis revealed that soil pH, Eh, and soil-extractable Cd were critical factors affecting the structure of the bacterial communities.
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Affiliation(s)
- Rong Huang
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha 410221, PR China; Key Laboratory of Original Environmental Pollution Control, Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, PR China; Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, PR China
| | - Yanqiong Li
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, PR China
| | - Feng Li
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, PR China; Department of Chemistry and Life Science, Xiangnan University, Chenzhou, Hunan Province 423000, PR China
| | - Xiuling Yin
- Key Laboratory of Original Environmental Pollution Control, Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, PR China
| | - Ran Li
- Key Laboratory of Original Environmental Pollution Control, Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, PR China
| | - Zhimin Wu
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha 410221, PR China
| | - Xuefeng Liang
- Key Laboratory of Original Environmental Pollution Control, Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, PR China.
| | - Zhian Li
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, PR China
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Ibrahim MM, Guo L, Wu F, Liu D, Zhang H, Zou S, Xing S, Mao Y. Field-applied biochar-based MgO and sepiolite composites possess CO 2 capture potential and alter organic C mineralization and C-cycling bacterial structure in fertilized soils. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 813:152495. [PMID: 34968614 DOI: 10.1016/j.scitotenv.2021.152495] [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: 09/29/2021] [Revised: 11/18/2021] [Accepted: 12/13/2021] [Indexed: 06/14/2023]
Abstract
Agricultural soils contribute a significant amount of anthropogenic CO2 emission, a greenhouse gas of global environmental concern. Hence, discovering sustainable materials that can capture CO2 in cultivated soils is paramount. Since the effect of biochar on C mineralization/retention in fertilized soils is unclear, we produced biochar-based MgO and sepiolite-nanocomposites with CO2 capture potential. The field-scale impacts of the modified-biochars were evaluated on net C exchange rate (NCER) periodically for 3 months in fertilized plots. The effects of the modified-biochar on organic-C mineralization, the activities, and dynamics of C-cycling-related 16S rRNA which are unknown, were investigated. Results revealed an initial rapid and higher cumulative CO2 emission from the sole fertilizer treatment (F). Unlike the biochar treatment (BF), the successful incorporation of MgO/Mg(OH)2 nanoparticles into the matrix and surface of biochar, and the potential formation of MgCO3 with soil CO2, mitigated CO2 emission, especially in the MgO-modified biochar (MgOBF), compared to the sepiolite-biochar treatment (SBF). Compared to F and BF, the higher C retention as MgCO3 in the modified biochar treatments led to an increase in cellulase activity, stimulation of key C-cycling-related bacteria, and the expression of genes associated with starch, sucrose, amino sugar, nucleotide sugar, ascorbate, aldarate, cellulose, and chitin degradation, thus, increasing organic C mineralization. Among the modified-biochar treatments, higher C mineralization was recorded in SBF, resulting in increased cumulative CO2 emission, despite its initial capture for up to 42 days. However, MgOBF was effective in capturing soil-derived CO2, despite the increased C mineralization compared to biochar. The changes in soil moisture and temperature significantly regulated NCER. Also, the modified biochars positively influenced the distribution of C-cycling-related bacteria by improving soil pH and available nutrients. Among the modified biochars, the observed higher mitigation effect of MgOBF on NCER indicated that it could be preferably applied in agricultural soils.
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Affiliation(s)
- Muhammed Mustapha Ibrahim
- College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, Fujian Province, China; Key Research Laboratory of Soil Ecosystem Health and Regulation in Fujian Provincial University, Fuzhou 350002, Fujian Province, China; Department of Soil Science, Joseph Sarwuan Tarka University, P.M.B, 2373 Makurdi, Nigeria
| | - Liming Guo
- College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, Fujian Province, China; Key Research Laboratory of Soil Ecosystem Health and Regulation in Fujian Provincial University, Fuzhou 350002, Fujian Province, China
| | - Fengying Wu
- College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, Fujian Province, China; Key Research Laboratory of Soil Ecosystem Health and Regulation in Fujian Provincial University, Fuzhou 350002, Fujian Province, China
| | - Dongming Liu
- College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, Fujian Province, China; Key Research Laboratory of Soil Ecosystem Health and Regulation in Fujian Provincial University, Fuzhou 350002, Fujian Province, China
| | - Hongxue Zhang
- College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, Fujian Province, China; Key Research Laboratory of Soil Ecosystem Health and Regulation in Fujian Provincial University, Fuzhou 350002, Fujian Province, China
| | - Shuangquan Zou
- College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, Fujian Province, China; Key Research Laboratory of Soil Ecosystem Health and Regulation in Fujian Provincial University, Fuzhou 350002, Fujian Province, China
| | - Shihe Xing
- College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, Fujian Province, China; Key Research Laboratory of Soil Ecosystem Health and Regulation in Fujian Provincial University, Fuzhou 350002, Fujian Province, China
| | - Yanling Mao
- College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, Fujian Province, China; Key Research Laboratory of Soil Ecosystem Health and Regulation in Fujian Provincial University, Fuzhou 350002, Fujian Province, China; Fujian Colleges and Universities Engineering Research Institute of Conservation and Utilization of Natural Bioresources, College of Forestry, Fujian Agriculture and Forestry University, Fuzhou 350002, Fujian Province, China.
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8
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Zhou F, Ye G, Gao Y, Wang H, Zhou S, Liu Y, Yan C. Cadmium adsorption by thermal-activated sepiolite: Application to in-situ remediation of artificially contaminated soil. JOURNAL OF HAZARDOUS MATERIALS 2022; 423:127104. [PMID: 34523482 DOI: 10.1016/j.jhazmat.2021.127104] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Revised: 08/28/2021] [Accepted: 08/30/2021] [Indexed: 06/13/2023]
Abstract
Soils contamination with Cd result in detriment to the environmental quality. In-situ immobilization methods by applying clay minerals have been gaining prominence. The effects on sepiolite of thermal activation at different temperatures (300-750 °C), for removing Cd from aqueous solutions were evaluated, in order to consider their further application for soil remediation. The influence of activation temperature was investigated using XRD, SEM, and N2 adsorption-desorption measurements. The S-600 exhibited the maximum adsorption capacity (21.28 mg/g), despite its lower SSA, and Langmuir model described the adsorption isotherms better than the Freundlich equation. TCLP was used to quantify the remediation effects of thermal-activated sepiolite on simulated soils artificially polluted with Cd. The results indicated that the mobility of Cd in soil was effectively reduced after treating with thermal-activated sepiolite and the use of S-600 was the most efficient, reducing the TCLP-Cd by approximately 73% compared with the control test. The main remediation mechanism was considered as the cation exchange of Cd by Mg at the edges of octahedral sheet. This study showed that thermal-activated sepiolite could be promising amendments for remediation of Cd-contaminated soil.
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Affiliation(s)
- Feng Zhou
- Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, China
| | - Guangyu Ye
- Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, China
| | - Yuting Gao
- Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, China
| | - Hongquan Wang
- Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, China
| | - Sen Zhou
- Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, China
| | - Yi Liu
- Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, China
| | - Chunjie Yan
- Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, China.
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9
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Hamid Y, Liu L, Usman M, Tang L, Lin Q, Saqib Rashid M, Ulhassan Z, Hussain MI, Yang X. Organic/inorganic amendments for the remediation of a red paddy soil artificially contaminated with different cadmium levels: Leaching, speciation, and phytoavailability tests. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 303:114148. [PMID: 34838377 DOI: 10.1016/j.jenvman.2021.114148] [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: 09/01/2021] [Revised: 11/17/2021] [Accepted: 11/22/2021] [Indexed: 06/13/2023]
Abstract
In the present study, the viability of using manure (M), lime (L), and sepiolite (S) alone and in combinations (M/L, M/S, and M/L/S) was evaluated for the remediation of a red paddy soil artificially contaminated with three levels of cadmium (Cd- 0.6, 1, and 2 mg kg-1 soil). Experiments were performed in columns (to evaluate Cd leaching) and pots by growing rice plants (to study Cd accumulation in plants). Before their application, the tested amendments were thoroughly characterized using SEM, EDS and FT-IR spectroscopy. The leaching experiment indicates that the application of L or M/L significantly improved the pH of soil leachate collected at different time intervals. However, the use of M/L/S was found better in decreasing the Cd contents in collected leachate. The use of M/L efficiently decreased the DTPA metal extraction (0.19, 0.41, and 0.55 mg kg-1) as compared to the CK (0.35, 0.63, and 1.13 mg kg-1, respectively). The Cd speciation results depicted a 33% decrease in exchangeable Cd with M/L/S treatment when compared with control (55%). Moreover, the M/L/S treatment was more efficient in lowering the Cd phytoavailability and subsequent accumulation in rice grains (0.05, 0.09, and 0.08 mg kg-1). These findings demonstrate that the use of composite amendments is categorically effective as an in-situ remediation tool to decrease Cd leaching and availability in diverse contaminations.
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Affiliation(s)
- Yasir Hamid
- Ministry of Education (MOE) Key Laboratory of Environmental Remediation and Ecosystem Health, College of Environmental and Resources Sciences, Zhejiang University, Hangzhou, 310058, China.
| | - Lei Liu
- Ministry of Education (MOE) Key Laboratory of Environmental Remediation and Ecosystem Health, College of Environmental and Resources Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Muhammad Usman
- PEIE Research Chair for the Development of Industrial Estates and Free Zones, Center for Environmental Studies and Research, Sultan Qaboos University, Al-Khoud 123, Muscat, Oman
| | - Lin Tang
- Ministry of Education (MOE) Key Laboratory of Environmental Remediation and Ecosystem Health, College of Environmental and Resources Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Qiang Lin
- Ministry of Education (MOE) Key Laboratory of Environmental Remediation and Ecosystem Health, College of Environmental and Resources Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Muhammad Saqib Rashid
- AS-Key Laboratory of Crust-Mantle Materials and the Environments, School of Earth and Space Sciences, University of Science and Technology of China, Hefei, 230026, China
| | - Zaid Ulhassan
- Institute of Crop Science and Zhejiang Key Laboratory of Crop Germplasm, Zhejiang University, Hangzhou, 310058, China
| | - M Iftikhar Hussain
- Department of Plant Biology & Soil Science, Universidade de Vigo, Campus Lagoas Marcosende, 36310, Vigo, Spain
| | - Xiaoe Yang
- Ministry of Education (MOE) Key Laboratory of Environmental Remediation and Ecosystem Health, College of Environmental and Resources Sciences, Zhejiang University, Hangzhou, 310058, China.
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10
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Yang W, Wang S, Zhou H, Zeng M, Zhang J, Huang F, Shan S, Guo Z, Yi H, Sun Z, Gu J, Liao B. Combined amendment reduces soil Cd availability and rice Cd accumulation in three consecutive rice planting seasons. J Environ Sci (China) 2022; 111:141-152. [PMID: 34949344 DOI: 10.1016/j.jes.2021.03.027] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Revised: 03/10/2021] [Accepted: 03/11/2021] [Indexed: 06/14/2023]
Abstract
The scientific application of stabilized materials has been considered an effective method for the in situ remediation of Cd-contaminated soil. This study aimed to investigate the persistence of the effect of a combined amendment of limestone and sepiolite (LS) on soil Cd availability and accumulation in rice grown in a mildly Cd-contaminated paddy field (0.45 mg/kg of Cd) over three consecutive rice seasons. 1125-4500 kg/ha of LS was applied to the soil before the first rice planting season and 562.5-2250 kg/ha of LS was supplemented before the third rice planting season. The application of LS (1125-4500 kg/ha) increased the soil pH by 0.44-1.09, 0.18-0.53, and 0.42-0.68 in the first, second, and third season, respectively, and decreased the soil acid-extractable Cd content by 18.2-36.4%, 17.7-33.5%, and 9.6-17.6%. LS application significantly decreased the Cd contents in the rice tissues. The application of 4500 kg/ha of LS decreased the Cd content in brown rice to below the National Food Limit Standard of 0.2 mg/kg (GB 2762-2017) in the three consecutive rice seasons. However, the effect of LS on the soil-rice system was significantly weakened in the third season. The supplementary application of 562.5-2250 kg/ha of LS further decreased the Cd content in brown rice by 26.1-56.5% and decreased the health risk index by 23.7-43.8%. Therefore, it was recommended to apply 4500 kg/ha of LS in the first season and to supplement 2250 kg/ha of LS in the third season to effectively guarantee the clean production of rice in three consecutive rice seasons.
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Affiliation(s)
- Wenjun Yang
- College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China; College of Resources and Environment, Hunan Agricultural University, Changsha 410128, China
| | - Shilong Wang
- College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China
| | - Hang Zhou
- College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China; Hunan Engineering Laboratory for Control of Rice Quality and Safety, Changsha 410004, China.
| | - Min Zeng
- College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China; Hunan Engineering Laboratory for Control of Rice Quality and Safety, Changsha 410004, China
| | - Jingyi Zhang
- College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China
| | - Fang Huang
- College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China
| | - Shiping Shan
- Hunan Institute of Microbiology, Changsha 410009, China
| | - Zhaohui Guo
- Hunan Institute of Microbiology, Changsha 410009, China
| | - Hongwei Yi
- Hunan Shuanghong Agricultural Ecological Engineering Co., Ltd., Changsha 410205, China
| | - Zhiguang Sun
- Hunan Shuanghong Agricultural Ecological Engineering Co., Ltd., Changsha 410205, China
| | - Jiaofeng Gu
- College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China; Hunan Engineering Laboratory for Control of Rice Quality and Safety, Changsha 410004, China
| | - Bohan Liao
- College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China; Hunan Engineering Laboratory for Control of Rice Quality and Safety, Changsha 410004, China
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11
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Wu J, Zhou Q, Huang R, Wu K, Li Z. Contrasting impacts of mobilisation and immobilisation amendments on soil health and heavy metal transfer to food chain. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 209:111836. [PMID: 33383336 DOI: 10.1016/j.ecoenv.2020.111836] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 11/03/2020] [Accepted: 12/20/2020] [Indexed: 06/12/2023]
Abstract
Heavy metal mobilisation or immobilisation have been widely applied in situ for soil remediation. However, the consequences of the mobilisation or immobilisation amendments on soil health and heavy metal transfer are rarely compared. In this study, four mobilisation additives (EDTA, humic acid, oxalic acid and citric acid) and four immobilisation additives (calcium silicate, lime, biochar and pig manure) were applied in soils contaminated with Cd, Zn, and Pb to investigate their effects on soil microbial and nematode communities, chemical speciation of metals in Amaranthus tricolour L., and metal food chain transfer in soil-plant-insect system. We found that mobilisation amendments inhibited plant growth and EDTA reduced microbial biomass indicated by phospholipid fatty acids. In contrast, immobilisation amendments promoted plant growth. However, abundances of microbe and nematode were reduced by calcium silicate and lime, while they were substantially increased by biochar and pig manure. We also realised that the immobilisation amendments shifted the water-soluble and pectate-/protein-associated fractions to phosphate-/oxalate-associated fractions of metals in plant leaves, enhanced detoxification ability of Prodenia litura larvae, and reduced metal transfer along food chain. However, opposite changes were observed in mobilisation treatments. According to redundancy analysis, we found that the addition of biochar or pig manure improved soil health and function by reducing metal availability and increasing soil available N and P concentrations. Our results indicate that organic immobilisation amendments most effectively improve soil health and reduce metal transfer, and should be recommended for remediation of heavy metal-contaminated soils.
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Affiliation(s)
- Jingtao Wu
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, PR China
| | - Qingqiu Zhou
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, PR China; Yunnan Key Laboratory of Plant Reproductive Adaption and Evolutionary Ecology, Yunnan University, Kunming 650500, PR China
| | - Rong Huang
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, PR China
| | - Kejun Wu
- Tourism Development Research Center of Sichuan, School of Tourism, Leshan Normal University, Leshan 614000, PR China; Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, PR China.
| | - Zhian Li
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, PR China.
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12
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Wang Y, Xu Y, Liang X, Sun Y, Huang Q, Peng Y. Leaching behavior and efficiency of cadmium in alkaline soil by adding two novel immobilization materials. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 710:135964. [PMID: 31926408 DOI: 10.1016/j.scitotenv.2019.135964] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Revised: 12/04/2019] [Accepted: 12/05/2019] [Indexed: 06/10/2023]
Abstract
The seriousness and harmfulness of cadmium (Cd) pollution have been gradually attracting wide attention. Remediation materials currently play a critical role in the remediation of Cd-polluted soils. However, the amendments that can efficiently remediate Cd-polluted alkaline soils are relatively few. In this study, a column leaching experiment was conducted to determine the effects of mercapto-palygorskite (MPAL) and mercapto-sepiolite (MSEP) on the leaching behavior and chemical fraction distribution of heavy metals, and to explore the remediation efficiency of two novel materials in alkaline soils through aging experiments. The results showed that, under DTPA-assisted leaching, the maximum concentration of leachate Cd in MPAL and MSEP was below 1/30 (0.1 mg·kg-1) of the total Cd concentration among leaching and significantly lower than that in CK, palygorskite (PAL), and sepiolite (SEP) treatments. Meanwhile, MPAL and MSEP decreased the leaching efficiency of Cd stability, had negligible effects on the essential micronutrients Cu and Zn, and did not influence the pH and electrical conductivity (EC) values of leachate. After leaching, the Fe/Mn oxide-bound Cd increased in MPAL and MSEP, whereas the exchange fraction Cd and carbonate-bound Cd decreased. Aging results showed that MPAL and MSEP effectively reduced 62.39% and 44.89% of DTPA-Cd after 1 day of aging, while at same dosage (0.3%) PAL and SEP reduced 7.79% and 6.75% of DTPA-Cd after 30 days of aging and showed no obvious efficiency. It was thus concluded that MPAL and MSEP can be considered as two novel and efficient soil remediation materials for Cd-polluted alkaline soils.
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Affiliation(s)
- Yale Wang
- Innovation Team of Remediation for Heavy Metal Contaminated Farmlands, Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, People's Republic of China; Key Laboratory of Original Environmental Pollution Control, Ministry of Agriculture, Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, People's Republic of China
| | - Yingming Xu
- Innovation Team of Remediation for Heavy Metal Contaminated Farmlands, Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, People's Republic of China; Key Laboratory of Original Environmental Pollution Control, Ministry of Agriculture, Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, People's Republic of China.
| | - Xuefeng Liang
- Innovation Team of Remediation for Heavy Metal Contaminated Farmlands, Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, People's Republic of China; Key Laboratory of Original Environmental Pollution Control, Ministry of Agriculture, Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, People's Republic of China
| | - Yuebing Sun
- Innovation Team of Remediation for Heavy Metal Contaminated Farmlands, Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, People's Republic of China; Key Laboratory of Original Environmental Pollution Control, Ministry of Agriculture, Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, People's Republic of China
| | - Qingqing Huang
- Innovation Team of Remediation for Heavy Metal Contaminated Farmlands, Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, People's Republic of China; Key Laboratory of Original Environmental Pollution Control, Ministry of Agriculture, Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, People's Republic of China
| | - Yunying Peng
- Innovation Team of Remediation for Heavy Metal Contaminated Farmlands, Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, People's Republic of China; Key Laboratory of Original Environmental Pollution Control, Ministry of Agriculture, Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, People's Republic of China
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13
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Liu Y, Xu Y, Huang Q, Qin X, Zhao L, Liang X, Wang L, Sun Y. Effects of chicken manure application on cadmium and arsenic accumulation in rice grains under different water conditions. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:30847-30856. [PMID: 31446596 DOI: 10.1007/s11356-019-06271-y] [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: 01/24/2019] [Accepted: 08/16/2019] [Indexed: 06/10/2023]
Abstract
Widespread contamination of agricultural soil with Cd and As has resulted in substantial transfer and accumulation of these toxicants in rice grains. In the present study, we investigated the effects of chicken manure application on Cd and As concentrations and As speciation in the rice grains grown under different water conditions by pot experiment. Under aerobic condition, the application of chicken manure increased soil pH and soil Eh during most of the growth period of rice. Consequently, the application of chicken manure has little effect on total Cd, slightly decreased total As and inorganic As of rice grains when applied at rate of 2.0%. Under intermittent irrigation condition, the application of chicken manure increased soil pH and decreased soil Eh during most of the growth period of rice. Thus, chicken manure decreased total Cd, As, and inorganic As of rice grains. Besides, there was increased reduction of Cd and As with increase in the amount of chicken manure applied. Under flooded condition, the application of chicken manure increased soil pH before heading but decreased soil pH after heading. The application of chicken manure dramatically decreased total and inorganic As in rice grains, and slightly decreased Cd of rice grains. There was increased reduction of total As concentration with the increase in the amount of chicken manure applied. Meanwhile, the inorganic As concentration was the lowest when the concentration of chicken manure was 1.0%.
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Affiliation(s)
- Yiyun Liu
- Innovation Team of Remediation for Heavy Metal Contaminated Farmlands, Agro-Environmental Protection Institute, Ministry of Agriculture, No. 31, Fukang Road, Nankai District, Tianjin, 300191, People's Republic of China
- Key Laboratory of Original Environmental Pollution Control, Ministry of Agriculture/Tianjin Key Laboratory of Agro-Environment and Agro-Product Safety, No. 31, Fukang Road, Nankai District, Tianjin, People's Republic of China
| | - Yingming Xu
- Innovation Team of Remediation for Heavy Metal Contaminated Farmlands, Agro-Environmental Protection Institute, Ministry of Agriculture, No. 31, Fukang Road, Nankai District, Tianjin, 300191, People's Republic of China.
- Key Laboratory of Original Environmental Pollution Control, Ministry of Agriculture/Tianjin Key Laboratory of Agro-Environment and Agro-Product Safety, No. 31, Fukang Road, Nankai District, Tianjin, People's Republic of China.
| | - Qingqing Huang
- Innovation Team of Remediation for Heavy Metal Contaminated Farmlands, Agro-Environmental Protection Institute, Ministry of Agriculture, No. 31, Fukang Road, Nankai District, Tianjin, 300191, People's Republic of China
- Key Laboratory of Original Environmental Pollution Control, Ministry of Agriculture/Tianjin Key Laboratory of Agro-Environment and Agro-Product Safety, No. 31, Fukang Road, Nankai District, Tianjin, People's Republic of China
| | - Xu Qin
- Innovation Team of Remediation for Heavy Metal Contaminated Farmlands, Agro-Environmental Protection Institute, Ministry of Agriculture, No. 31, Fukang Road, Nankai District, Tianjin, 300191, People's Republic of China
- Key Laboratory of Original Environmental Pollution Control, Ministry of Agriculture/Tianjin Key Laboratory of Agro-Environment and Agro-Product Safety, No. 31, Fukang Road, Nankai District, Tianjin, People's Republic of China
| | - Lijie Zhao
- Innovation Team of Remediation for Heavy Metal Contaminated Farmlands, Agro-Environmental Protection Institute, Ministry of Agriculture, No. 31, Fukang Road, Nankai District, Tianjin, 300191, People's Republic of China
- Key Laboratory of Original Environmental Pollution Control, Ministry of Agriculture/Tianjin Key Laboratory of Agro-Environment and Agro-Product Safety, No. 31, Fukang Road, Nankai District, Tianjin, People's Republic of China
| | - Xuefeng Liang
- Innovation Team of Remediation for Heavy Metal Contaminated Farmlands, Agro-Environmental Protection Institute, Ministry of Agriculture, No. 31, Fukang Road, Nankai District, Tianjin, 300191, People's Republic of China
- Key Laboratory of Original Environmental Pollution Control, Ministry of Agriculture/Tianjin Key Laboratory of Agro-Environment and Agro-Product Safety, No. 31, Fukang Road, Nankai District, Tianjin, People's Republic of China
| | - Lin Wang
- Innovation Team of Remediation for Heavy Metal Contaminated Farmlands, Agro-Environmental Protection Institute, Ministry of Agriculture, No. 31, Fukang Road, Nankai District, Tianjin, 300191, People's Republic of China
- Key Laboratory of Original Environmental Pollution Control, Ministry of Agriculture/Tianjin Key Laboratory of Agro-Environment and Agro-Product Safety, No. 31, Fukang Road, Nankai District, Tianjin, People's Republic of China
| | - Yuebing Sun
- Innovation Team of Remediation for Heavy Metal Contaminated Farmlands, Agro-Environmental Protection Institute, Ministry of Agriculture, No. 31, Fukang Road, Nankai District, Tianjin, 300191, People's Republic of China
- Key Laboratory of Original Environmental Pollution Control, Ministry of Agriculture/Tianjin Key Laboratory of Agro-Environment and Agro-Product Safety, No. 31, Fukang Road, Nankai District, Tianjin, People's Republic of China
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14
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Zhan F, Zeng W, Yuan X, Li B, Li T, Zu Y, Jiang M, Li Y. Field experiment on the effects of sepiolite and biochar on the remediation of Cd- and Pb-polluted farmlands around a Pb-Zn mine in Yunnan Province, China. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:7743-7751. [PMID: 30671759 DOI: 10.1007/s11356-018-04079-w] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Accepted: 12/27/2018] [Indexed: 05/22/2023]
Abstract
The effects of sepiolite and biochar on the contents of available nutrients (N, P, and K); the chemical forms and available contents of Cd and Pb in soils; the biomass and growth of maize; and the contents of nutrients, Cd, and Pb in maize were studied in situ in Cd- and Pb-polluted farmlands around the Lanping Pb-Zn mine in Yunnan Province, China. Results demonstrated that sepiolite did not influence the contents of available nutrients in soils, although it significantly increased the pH value and decreased available Cd (CaCl2-extractable and exchangeable) contents and exchangeable and reducible Pb. Moreover, sepiolite increased the biomass in the aboveground part of maize, resulting in the reduction of Cd contents in maize plants and grains by 25.6-47.5%. Meanwhile, the biochar increased the contents of available nutrients in soils and decreased the contents of exchangeable Pb in soils and biomass in the aboveground part of maize plants and grains; decreased the Cd contents in maize stems and grains by 26.7% and 24.6%, respectively; and decreased the Pb content in roots by 16.2%. However, neither sepiolite nor biochar had considerable influence on the Pb content in maize grains. According to a correlation analysis, soil pH has extremely significant negative correlations with available Cd content in soils, which in turn have extremely significant positive correlation with the Cd content in maize plants and grains. These results revealed that sepiolite increases soil pH and decreases Cd bioavailability in farmland soils around the Pb-Zn mine. Furthermore, biochar increases the contents of available nutrients in farmland soils and the maize yield. Sepiolite and biochar both decrease the contents and transfer coefficients of Cd in maize plants and grains and are, thus, applicable to the immobilization remediation of Cd-polluted farmlands.
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Affiliation(s)
- Fangdong Zhan
- College of Resources and Environment, Yunnan Agricultural University, Kunming, 650201, Yunnan, China
- Yunnan Engineering Laboratory for Agro-environment Pollution Control and Eco-remediation, Yunnan Agricultural University, Kunming, 650201, Yunnan, China
| | - Wenzeng Zeng
- College of Resources and Environment, Yunnan Agricultural University, Kunming, 650201, Yunnan, China
- Yunnan Engineering Laboratory for Agro-environment Pollution Control and Eco-remediation, Yunnan Agricultural University, Kunming, 650201, Yunnan, China
| | - Xingchao Yuan
- College of Resources and Environment, Yunnan Agricultural University, Kunming, 650201, Yunnan, China
- Yunnan Engineering Laboratory for Agro-environment Pollution Control and Eco-remediation, Yunnan Agricultural University, Kunming, 650201, Yunnan, China
| | - Bo Li
- College of Resources and Environment, Yunnan Agricultural University, Kunming, 650201, Yunnan, China
- Yunnan Engineering Laboratory for Agro-environment Pollution Control and Eco-remediation, Yunnan Agricultural University, Kunming, 650201, Yunnan, China
| | - Tianguo Li
- College of Resources and Environment, Yunnan Agricultural University, Kunming, 650201, Yunnan, China
- Yunnan Engineering Laboratory for Agro-environment Pollution Control and Eco-remediation, Yunnan Agricultural University, Kunming, 650201, Yunnan, China
| | - Yanqun Zu
- College of Resources and Environment, Yunnan Agricultural University, Kunming, 650201, Yunnan, China
- Yunnan Engineering Laboratory for Agro-environment Pollution Control and Eco-remediation, Yunnan Agricultural University, Kunming, 650201, Yunnan, China
| | - Ming Jiang
- College of Resources and Environment, Yunnan Agricultural University, Kunming, 650201, Yunnan, China.
- Yunnan Engineering Laboratory for Agro-environment Pollution Control and Eco-remediation, Yunnan Agricultural University, Kunming, 650201, Yunnan, China.
| | - Yuan Li
- College of Resources and Environment, Yunnan Agricultural University, Kunming, 650201, Yunnan, China.
- Yunnan Engineering Laboratory for Agro-environment Pollution Control and Eco-remediation, Yunnan Agricultural University, Kunming, 650201, Yunnan, China.
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15
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Kocaoba S. Adsorption of Fe(II) and Fe(III) from aqueous solution by using sepiolite: speciation studies with MINEQL+ computer program. SEP SCI TECHNOL 2019. [DOI: 10.1080/01496395.2019.1579841] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Sevgi Kocaoba
- Faculty of Art & Science, Department of Chemistry, Yildiz Technical University, Istanbul, Turkey
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