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Pappoe A, Fekiacova-Castanet Z, Guihou A, Bosch-Serra ÀD, Deschamps P, Feder F, Magid J, Morvan T, Testemale D, Doelsch E. Stable isotopes analysis combined with X-ray absorption spectroscopy reveal the fate of organic waste-borne copper and zinc in amended soils. JOURNAL OF HAZARDOUS MATERIALS 2024; 480:136039. [PMID: 39366051 DOI: 10.1016/j.jhazmat.2024.136039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2024] [Revised: 08/28/2024] [Accepted: 10/01/2024] [Indexed: 10/06/2024]
Abstract
Copper (Cu) and zinc (Zn), two potentially toxic trace elements, are commonly abundant in organic wastes (OWs) recycled in soils as fertilizer. Yet current knowledge on the long-term behavior and fate of Cu and Zn in soil following OW spreading is scant. We addressed this issue by studying the fate of OW-borne Cu and Zn in amended soils from four different long-term field experiments. By combining the stable isotope analysis and X-ray absorption spectroscopy, we identified changes in Cu and Zn concentrations, speciation and isotopic compositions in the amended soils only when OW had been applied at high rates over long periods. Under these conditions, we highlighted that: (i) all OW-derived Cu and Zn had accumulated in the topsoil layer regardless of the soil and OW type; (ii) the amended soil isotopic signatures were the result of the mixing of OW-borne and natural Cu and Zn; and (iii) Cu and Zn exhibited distinct speciation patterns in amended soils. Indeed, the unprecedented persistence of OW-borne crystallized Cu(I)-sulfide in the amended soils contrasted with the complete transformation of pig slurry-borne nanosized Zn-sulfide or household compost-derived amorphous Zn phosphate and Zn complexed by organic matter.
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Affiliation(s)
- Abraham Pappoe
- Aix Marseille Univ, CNRS, IRD, INRAE, CEREGE, Aix-en-Provence, France; CIRAD, UPR Recyclage et Risque, F-34398 Montpellier, France; Recyclage et Risque, Univ. Montpellier, CIRAD, Montpellier, France
| | | | - Abel Guihou
- Aix Marseille Univ, CNRS, IRD, INRAE, CEREGE, Aix-en-Provence, France
| | - Àngela D Bosch-Serra
- Department of Chemistry, Physics, Environmental and Soil Sciences, University of Lleida, Avda. Alcalde Rovira Roure 191, 25198 Lleida, Spain
| | - Pierre Deschamps
- Aix Marseille Univ, CNRS, IRD, INRAE, CEREGE, Aix-en-Provence, France
| | - Frédéric Feder
- CIRAD, UPR Recyclage et Risque, F-34398 Montpellier, France; Recyclage et Risque, Univ. Montpellier, CIRAD, Montpellier, France
| | - Jakob Magid
- Plant and Soil Science, Department of Plant and Environmental Sciences, Faculty of Science, University of Copenhagen, Thorvaldsensvej 40, Frederiksberg DK- 1871, Denmark
| | - Thierry Morvan
- Agrocampus Rennes, UMR 1069, Soil Agro, and Hydro-Systems, 35000 Rennes, France
| | - Denis Testemale
- Univ. Grenoble Alpes, CNRS, Grenoble INP, Institut Néel, 38000 Grenoble, France
| | - Emmanuel Doelsch
- Aix Marseille Univ, CNRS, IRD, INRAE, CEREGE, Aix-en-Provence, France; CIRAD, UPR Recyclage et Risque, F-34398 Montpellier, France; Recyclage et Risque, Univ. Montpellier, CIRAD, Montpellier, France.
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2
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Tothero GK, Hoover RL, Farag IF, Kaplan DI, Weisenhorn P, Emerson D, Chan CS. Leptothrix ochracea genomes reveal potential for mixotrophic growth on Fe(II) and organic carbon. Appl Environ Microbiol 2024; 90:e0059924. [PMID: 39133000 PMCID: PMC11412304 DOI: 10.1128/aem.00599-24] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2024] [Accepted: 07/16/2024] [Indexed: 08/13/2024] Open
Abstract
Leptothrix ochracea creates distinctive iron-mineralized mats that carpet streams and wetlands. Easily recognized by its iron-mineralized sheaths, L. ochracea was one of the first microorganisms described in the 1800s. Yet it has never been isolated and does not have a complete genome sequence available, so key questions about its physiology remain unresolved. It is debated whether iron oxidation can be used for energy or growth and if L. ochracea is an autotroph, heterotroph, or mixotroph. To address these issues, we sampled L. ochracea-rich mats from three of its typical environments (a stream, wetlands, and a drainage channel) and reconstructed nine high-quality genomes of L. ochracea from metagenomes. These genomes contain iron oxidase genes cyc2 and mtoA, showing that L. ochracea has the potential to conserve energy from iron oxidation. Sox genes confer potential to oxidize sulfur for energy. There are genes for both carbon fixation (RuBisCO) and utilization of sugars and organic acids (acetate, lactate, and formate). In silico stoichiometric metabolic models further demonstrated the potential for growth using sugars and organic acids. Metatranscriptomes showed a high expression of genes for iron oxidation; aerobic respiration; and utilization of lactate, acetate, and sugars, as well as RuBisCO, supporting mixotrophic growth in the environment. In summary, our results suggest that L. ochracea has substantial metabolic flexibility. It is adapted to iron-rich, organic carbon-containing wetland niches, where it can thrive as a mixotrophic iron oxidizer by utilizing both iron oxidation and organics for energy generation and both inorganic and organic carbon for cell and sheath production. IMPORTANCE Winogradsky's observations of L. ochracea led him to propose autotrophic iron oxidation as a new microbial metabolism, following his work on autotrophic sulfur-oxidizers. While much culture-based research has ensued, isolation proved elusive, so most work on L. ochracea has been based in the environment and in microcosms. Meanwhile, the autotrophic Gallionella became the model for freshwater microbial iron oxidation, while heterotrophic and mixotrophic iron oxidation is not well-studied. Ecological studies have shown that Leptothrix overtakes Gallionella when dissolved organic carbon content increases, demonstrating distinct niches. This study presents the first near-complete genomes of L. ochracea, which share some features with autotrophic iron oxidizers, while also incorporating heterotrophic metabolisms. These genome, metabolic modeling, and transcriptome results give us a detailed metabolic picture of how the organism may combine lithoautotrophy with organoheterotrophy to promote Fe oxidation and C cycling and drive many biogeochemical processes resulting from microbial growth and iron oxyhydroxide formation in wetlands.
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Affiliation(s)
- Gracee K. Tothero
- Microbiology Graduate
Program, University of Delaware,
Newark, Delaware, USA
- Delaware Biotechnology
Institute, Newark,
Delaware, USA
- Department of Earth
Sciences, University of Delaware,
Newark, Delaware, USA
| | - Rene L. Hoover
- Microbiology Graduate
Program, University of Delaware,
Newark, Delaware, USA
- Delaware Biotechnology
Institute, Newark,
Delaware, USA
- Department of Earth
Sciences, University of Delaware,
Newark, Delaware, USA
| | - Ibrahim F. Farag
- School of Marine
Science and Policy, University of
Delaware, Newark,
Delaware, USA
| | - Daniel I. Kaplan
- Savannah River Ecology
Laboratory, University of Georgia,
Aiken, South Carolina,
USA
| | | | - David Emerson
- Bigelow Laboratory for
Ocean Sciences, East
Boothbay, Maine, USA
| | - Clara S. Chan
- Microbiology Graduate
Program, University of Delaware,
Newark, Delaware, USA
- Delaware Biotechnology
Institute, Newark,
Delaware, USA
- Department of Earth
Sciences, University of Delaware,
Newark, Delaware, USA
- School of Marine
Science and Policy, University of
Delaware, Newark,
Delaware, USA
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3
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Cai W, Navarro DA, Du J, Srivastava P, Cao Z, Ying G, Kookana RS. Effect of heavy metal co-contaminants on the sorption of thirteen anionic per- and poly-fluoroalkyl substances (PFAS) in soils. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 905:167188. [PMID: 37734606 DOI: 10.1016/j.scitotenv.2023.167188] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2023] [Revised: 09/13/2023] [Accepted: 09/16/2023] [Indexed: 09/23/2023]
Abstract
Understanding the sorption behavior of per- and poly-fluoroalkyl substances (PFAS) in soils are essential for assessing their mobility and risk in the environment. Heavy metals often coexist with PFAS depending on the source and history of contamination. In this study, we investigated the effect of heavy metal co-contaminants (Pb2+, Cu2+ and Zn2+) on the sorption of 13 anionic PFAS with different perfluorocarbon chain length (C3-C9) in two soils with different properties. Results revealed that Pb2+, Cu2+ and Zn2+ had little effect on the sorption of most short-chain compounds, while the presence of these heavy metals enhanced the sorption of long-chain PFAS in two soils. The distribution coefficients (Kd) of several long-chain PFAS linearly increased with increasing concentrations of heavy metal, especially in the presence of Pb2+ (ΔKd/Δ [Pb2+] > 3 for PFOS and PFNA vs <1 for PFPeS and PFHxS). While several mechanisms may have contributed to the enhancement of sorption of PFAS, the heavy metals most likely contributed through enhanced hydrophobic interactions of PFAS by neutralizing the negative charge of adsorption surfaces in soils and thus making it more favorable for their partitioning onto the solid phase. Moreover, the increase in the concentrations of heavy metals led to a decrease in the pH of the system and promoted sorption of long-chain compounds, especially in soil with lower organic carbon content. Overall, this study provides evidence that the presence of co-existing heavy metal cations in soils can significantly enhance the sorption of long-chain PFAS onto soil, thereby potentially limiting their mobility in the environment.
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Affiliation(s)
- Wenwen Cai
- School of Environment, Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, International Joint Laboratory on Key Techniques in Water Treatment, Henan Normal University, Xinxiang 453007, China; State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China
| | - Divina A Navarro
- CSIRO Environment, Locked Bag 2, Glen Osmond, 5064, Australia; School of Agriculture, Food and Wine, The University of Adelaide, Waite Campus, Locked Bag 1, Glen Osmond 5064, Australia.
| | - Jun Du
- CSIRO Environment, Locked Bag 2, Glen Osmond, 5064, Australia
| | | | - Zhiguo Cao
- School of Environment, Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, International Joint Laboratory on Key Techniques in Water Treatment, Henan Normal University, Xinxiang 453007, China
| | - Guangguo Ying
- School of Environment, South China Normal University, Guangzhou 510006, China
| | - Rai S Kookana
- CSIRO Environment, Locked Bag 2, Glen Osmond, 5064, Australia; School of Agriculture, Food and Wine, The University of Adelaide, Waite Campus, Locked Bag 1, Glen Osmond 5064, Australia
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Taghipour M, Jalali M. Leaching of Cr, Cu, Ni, and Zn from different solid wastes: Effects of adding adsorbents and using different leaching solutions. WASTE MANAGEMENT (NEW YORK, N.Y.) 2023; 169:319-331. [PMID: 37506589 DOI: 10.1016/j.wasman.2023.07.020] [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: 01/07/2023] [Revised: 07/13/2023] [Accepted: 07/18/2023] [Indexed: 07/30/2023]
Abstract
The leaching of potentially toxic elements from different industrial solid wastes (ISWs) must be understood to manage the environmental concerns they pose. The objective of this research was to investigate the effect of clay mineral (bentonite) and nanoparticle (MgO) on potentially toxic elements (Cr, Cu, Ni, Zn) leaching in some ISWs, when they leached with different leaching solutions. The highest amount of Zn and Ni was leached from ceramic factory waste (CFW) and stone cutting wastes (SCW), respectively, while the highest amount of Cr was leached from leather factory waste (LFW). In ISWs, the leaching percentage of Cu, Ni, and Zn were up to 11.2%, whereas the greatest leaching percentage of Cr was 26.7% of the total content. The addition of bentonite and MgO decreased potentially toxic element leaching. The results of effluents speciation of SFW indicated that at the beginning of leaching with CaCl2, nitric acid, and citric acid, 75.1%, 84.1%, and 39.6% of Cr were in different forms of Cr (III), respectively, while at the end of leaching the percentage of Cr (III) species were decreased and Cr (VI) species were increased to 83.6%, 88.4%, and 93.4%, respectively. The addition of bentonite and especially MgO to the ISWs reduced the leaching of potentially toxic elements as well as reduced the percentage of Cr (VI) in the effluents of SFW. The findings suggested that bentonite has the potential to be a low-cost and environmentally acceptable adsorbent for minimizing the leaching of Cr and other potentially toxic elements from ISWs.
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Affiliation(s)
- Marzieh Taghipour
- Department of Soil Science, College of Agriculture, Bu-Ali Sina University, Hamedan, Iran.
| | - Mohsen Jalali
- Department of Soil Science, College of Agriculture, Bu-Ali Sina University, Hamedan, Iran.
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5
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Liu C, Lan Q, Yan B, Wang J, Wang H, Wu Y, Fu C, Zhong Y, Li C, Li S. Spatio-temporal variation and hazard assessment of potentially toxic metal element contamination in sediments and water before and after a water-level fluctuation cycle in the Three Gorges Reservoir, Wanzhou, China. ENVIRONMENTAL MONITORING AND ASSESSMENT 2023; 195:920. [PMID: 37405516 DOI: 10.1007/s10661-023-11457-6] [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: 01/25/2022] [Accepted: 06/01/2023] [Indexed: 07/06/2023]
Abstract
Previous investigations on heavy metals in the water-sediment compartment focused on their spatial distribution, and the influence of sediment pH and organic matter (OM) on metal environmental occurrences. However, there are limited studies on the effects of physicochemical properties on the migration and transformation of heavy metals in the water-sediment compartments. This study investigated the relationship between the physicochemical properties of sediments and the distribution and chemical speciation of heavy metals, and the potential environmental risk of heavy metals in water and sediment using Risk Assessment Code (RAC) values and the Tessier five-step extraction method. Adsorption and desorption experiments showed that the sediment had weak adsorption and the strongest desorption capacity for Cd. Results of the pH, OM, surface element content, and X-ray diffraction (XRD) patterns suggested that cadmium (Cd) was more likely to partition into the water phase from the sediment during the flooding and water storage periods. When pH was 7-8 and OM content was 3.6-5.9%, the sediment-water distribution coefficient of Cd was low due to its large ionic radius, and the surface adsorption sites were saturated by other elements. These studies can provide a theoretical basis for the management and pollution control of the Three Gorges Reservoir.
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Affiliation(s)
- Chang Liu
- Key Laboratory of Water Environment Evolution and Pollution Control in Three Gorges Reservoir (Chongqing Three Gorges University), Chongqing, 404100, China
- College of Environmental and Chemical Engineering, Chongqing Three Gorges University, Chongqing, 404100, China
| | - Qiaojuan Lan
- Key Laboratory of Water Environment Evolution and Pollution Control in Three Gorges Reservoir (Chongqing Three Gorges University), Chongqing, 404100, China
- College of Environmental and Chemical Engineering, Chongqing Three Gorges University, Chongqing, 404100, China
| | - Bin Yan
- Key Laboratory of Water Environment Evolution and Pollution Control in Three Gorges Reservoir (Chongqing Three Gorges University), Chongqing, 404100, China.
- College of Environmental and Chemical Engineering, Chongqing Three Gorges University, Chongqing, 404100, China.
| | - Jueqiao Wang
- Key Laboratory of Water Environment Evolution and Pollution Control in Three Gorges Reservoir (Chongqing Three Gorges University), Chongqing, 404100, China
- College of Environmental and Chemical Engineering, Chongqing Three Gorges University, Chongqing, 404100, China
| | - Huan Wang
- Key Laboratory of Water Environment Evolution and Pollution Control in Three Gorges Reservoir (Chongqing Three Gorges University), Chongqing, 404100, China
- College of Environmental and Chemical Engineering, Chongqing Three Gorges University, Chongqing, 404100, China
- Chongqing Landscape and Gardening Research Institute, Chongqing, 401329, China
| | - Yan Wu
- Key Laboratory of Water Environment Evolution and Pollution Control in Three Gorges Reservoir (Chongqing Three Gorges University), Chongqing, 404100, China.
- College of Environmental and Chemical Engineering, Chongqing Three Gorges University, Chongqing, 404100, China.
- College of Environmental Science and Engineering, Beijing Forestry University, Beijing, 100083, China.
| | - Chuan Fu
- Key Laboratory of Water Environment Evolution and Pollution Control in Three Gorges Reservoir (Chongqing Three Gorges University), Chongqing, 404100, China.
- College of Environmental and Chemical Engineering, Chongqing Three Gorges University, Chongqing, 404100, China.
| | - Yinhai Zhong
- Key Laboratory of Water Environment Evolution and Pollution Control in Three Gorges Reservoir (Chongqing Three Gorges University), Chongqing, 404100, China
- College of Environmental and Chemical Engineering, Chongqing Three Gorges University, Chongqing, 404100, China
| | - Chao Li
- Key Laboratory of Water Environment Evolution and Pollution Control in Three Gorges Reservoir (Chongqing Three Gorges University), Chongqing, 404100, China
- College of Environmental and Chemical Engineering, Chongqing Three Gorges University, Chongqing, 404100, China
| | - Shenglei Li
- Key Laboratory of Water Environment Evolution and Pollution Control in Three Gorges Reservoir (Chongqing Three Gorges University), Chongqing, 404100, China
- College of Environmental and Chemical Engineering, Chongqing Three Gorges University, Chongqing, 404100, China
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6
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Cao Y, Ma X, Chen N, Chen T, Zhao M, Li H, Song Y, Zhou J, Yang J. Polypropylene microplastics affect the distribution and bioavailability of cadmium by changing soil components during soil aging. JOURNAL OF HAZARDOUS MATERIALS 2023; 443:130079. [PMID: 36242955 DOI: 10.1016/j.jhazmat.2022.130079] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Revised: 09/14/2022] [Accepted: 09/26/2022] [Indexed: 06/16/2023]
Abstract
Compared with the widespread and serious heavy metal contamination in soils, microplastic pollution has gained attention only recently. Little is known about how microplastics affect the distribution of heavy metals in soils, especially across soil components level. In this study, a 180-day soil aging experiment and soil density fractionation were performed to investigate the effect of polypropylene (PP) microplastics on the binding behavior of cadmium (Cd) to solid components, i.e. particulate organic matter, organo-mineral complexes (OMC), and mineral. Results showed addition of 2-10% microplastics in soils induced the decomposition of OMC fraction by 10.88-23.10%. Compared to the control, the content of dissolved organic carbon increased, and pH, humic substances, and soil organic matter decreased with microplastics. After 180d of aging, the content of Cd in OMC fraction increased by 17.92%, while microplastics made Cd contents decline by 10.01-19.75%. The impacts strongly depended on the dose and surface characteristic of microplastics. Overall, PP microplastics increased the concentration of bioavailable Cd in soils via decreasing soil retention of Cd by the OMC fraction. These findings based on the solid components level will provide a new perspective for understanding microplastics effects on soil systems and pollutants.
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Affiliation(s)
- Yanxiao Cao
- Research Center for Environment and Health, Zhongnan University of Economics and Law, Wuhan 430073, China; School of Information and Safety Engineering, Zhongnan University of Economics and Law, Wuhan 430073, China.
| | - Xianying Ma
- Research Center for Environment and Health, Zhongnan University of Economics and Law, Wuhan 430073, China; School of Information and Safety Engineering, Zhongnan University of Economics and Law, Wuhan 430073, China
| | - Nuo Chen
- Research Center for Environment and Health, Zhongnan University of Economics and Law, Wuhan 430073, China; School of Information and Safety Engineering, Zhongnan University of Economics and Law, Wuhan 430073, China
| | - Tiantian Chen
- Research Center for Environment and Health, Zhongnan University of Economics and Law, Wuhan 430073, China; School of Information and Safety Engineering, Zhongnan University of Economics and Law, Wuhan 430073, China
| | - Mengjie Zhao
- Research Center for Environment and Health, Zhongnan University of Economics and Law, Wuhan 430073, China; School of Information and Safety Engineering, Zhongnan University of Economics and Law, Wuhan 430073, China
| | - Honghu Li
- Research Center for Environment and Health, Zhongnan University of Economics and Law, Wuhan 430073, China; School of Information and Safety Engineering, Zhongnan University of Economics and Law, Wuhan 430073, China
| | - Yongwei Song
- Research Center for Environment and Health, Zhongnan University of Economics and Law, Wuhan 430073, China; School of Information and Safety Engineering, Zhongnan University of Economics and Law, Wuhan 430073, China
| | - Jingcheng Zhou
- Research Center for Environment and Health, Zhongnan University of Economics and Law, Wuhan 430073, China; Institute of Environmental Management and Policy, Zhongnan University of Economics and Law, Wuhan 430073, China; School of Information and Safety Engineering, Zhongnan University of Economics and Law, Wuhan 430073, China
| | - Jun Yang
- Research Center for Environment and Health, Zhongnan University of Economics and Law, Wuhan 430073, China; Institute of Environmental Management and Policy, Zhongnan University of Economics and Law, Wuhan 430073, China; School of Information and Safety Engineering, Zhongnan University of Economics and Law, Wuhan 430073, China.
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Yu H, Li C, Yan J, Ma Y, Zhou X, Yu W, Kan H, Meng Q, Xie R, Dong P. A review on adsorption characteristics and influencing mechanism of heavy metals in farmland soil. RSC Adv 2023; 13:3505-3519. [PMID: 36756568 PMCID: PMC9890661 DOI: 10.1039/d2ra07095b] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Accepted: 12/31/2022] [Indexed: 01/26/2023] Open
Abstract
The accumulation of heavy metals in soil and crops is considered to be a severe environmental problem due to its various harmful effects on animals and plants. Soil adsorption is an essential characteristic of mud, which is the fundamental reason for soil to have a specific self-purification capacity and environmental capacity for heavy metals. The adsorption of heavy metals by soil reduces the uptake of these pollutants by crops, thereby limiting food contamination. Therefore, the adsorption of heavy metals in crop soils was taken as the primary research object. Based on the entire reading of the literature, the previous research results were compared and discussed from the four aspects of heterogeneity, physical and chemical properties, competitive adsorption, and external factors. The influencing mechanism of heavy metal adsorption characteristics in soil was reviewed. Finally, suggestions and prospects for future research on heavy metal adsorption were put forward.
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Affiliation(s)
- Hanjing Yu
- Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology Kunming 650093 China
| | - Chenchen Li
- Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology Kunming 650093 China
| | - Jin Yan
- Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology Kunming 650093 China
| | - Yaoqiang Ma
- Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology Kunming 650093 China
| | - Xinyu Zhou
- Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology Kunming 650093 China
| | - Wanquan Yu
- Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology Kunming 650093 China
| | - Huiying Kan
- Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology Kunming 650093 China
| | - Qi Meng
- Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology Kunming 650093 China
| | - Ruosong Xie
- Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology Kunming 650093 China
| | - Peng Dong
- Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology Kunming 650093 China
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8
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Effect of the Welan Gum Concentration on the Rheological and Structural Behaviour of Biocomposite Hydrogels with Sepiolite as Filler. Polymers (Basel) 2022; 15:polym15010033. [PMID: 36616383 PMCID: PMC9823385 DOI: 10.3390/polym15010033] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Revised: 12/05/2022] [Accepted: 12/13/2022] [Indexed: 12/24/2022] Open
Abstract
A very positive and effective approach to tuning the mechanical properties of polymers has been the development of composites. This paper deals with novel biocomposite hydrogels composed by two biocompatible materials: welan gum as biopolymer matrix and sepiolite as filler. Welan gum content was studied as a tuning parameter to control the rheological properties of the developed biocomposites. The rheological and microstructural behaviour of the composites was investigated by mean of steady-state flow curves, creep-recovery tests, small amplitude oscillatory shear tests, and electron microscopy. An increase in welan gum content provoked the progressive disappearance of the shear-thinningzero-shear-thinning behaviour with a yield point which was clearly defined, characteristic of sepiolite gels, leading to a conventional shear-thinning behaviour, typical of polymeric systems. Also, a higher content of biopolymer in the mixtures led to a more elastic and compact structure characterized by higher values of both G' and G". The fundamental novelty was based on taking the flowability provided by the biopolymer as the main objective and reinforcing the viscosity yielded by welan gum with sepiolite, which contributed to increasing the biocomposite consistency. Thus, rheological properties can be adjusted, taking into account the balance of the components to adapt them to the requirements of each application.
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9
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Esfandiar N, McKenzie ER. Bioretention soil capacity for removing nutrients, metals, and polycyclic aromatic hydrocarbons; roles of co-contaminants, pH, salinity and dissolved organic carbon. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 324:116314. [PMID: 36166865 DOI: 10.1016/j.jenvman.2022.116314] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Revised: 09/07/2022] [Accepted: 09/15/2022] [Indexed: 06/16/2023]
Abstract
Conventional bioretention soil media (BSM: e.g., loamy sand) is employed in infiltration-based stormwater management practices, but concerns exist on its limited sorption capacity. However, limited quantitative data is available, particularly considering the wide range of contaminants and water quality conditions that occur in stormwater. This study utilized batch tests to investigate the capability of conventional BSM for simultaneous removal of three nutrients (ammonium, nitrate, and phosphate), six metals (Cd, Cr, Cu, Ni, Pb and Zn), and four polycyclic aromatic hydrocarbons (PAHs: naphthalene, acenaphthylene, phenanthrene, and pyrene) from synthetic stormwater. Moreover, the effects of co-contaminants and different stormwater chemistry parameters (pH, salinity, and dissolved organic carbon (DOC)) on BSM sorption capacity were investigated. BSM was not effective for nutrients removal; however, it had good removal efficiency for metals such as Cu, Pb, and Cr which are less soluble at neutral pH values compared to metals such as Ni, Cd and Zn. Moreover, BSM was effective for removing PAHs with higher hydrophobicity such as pyrene and phenanthrene. Metals sorption capacity of BSM was greater at higher pH, lower salinity and DOC; however, the sorption capacity of BSM for PAHs was not sensitive to stormwater chemistry parameters. However, competitive sorption had a notable effect on low molecular weight PAHs, Cd, and Ni. This study provides a quantitative evaluation of the BSM performance and compares the sorption capacity to potential sorptive amendments used in stormwater management. While select sorbent amendments out-performed the BSM, this was not universal and was contaminant specific; careful consideration of water quality enhancement goals and solution chemistry are required in selecting a sorbent. Overall, this study identifies the possible limitations in BSM compositions and factors that may adversely affect BSM sorption capacity, and finally describes options to enhance BSM performance and recommendations for future research.
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Affiliation(s)
- Narges Esfandiar
- Department of Civil and Environmental Engineering, Temple University, Philadelphia, PA, 19122, United States
| | - Erica R McKenzie
- Department of Civil and Environmental Engineering, Temple University, Philadelphia, PA, 19122, United States.
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10
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Ratié G, Vaňková Z, Baragaño D, Liao R, Šípková A, Gallego JR, Chrastný V, Lewandowská Š, Ding S, Komárek M. Antagonistic Cd and Zn isotope behavior in the extracted soil fractions from industrial areas. JOURNAL OF HAZARDOUS MATERIALS 2022; 439:129519. [PMID: 35882173 DOI: 10.1016/j.jhazmat.2022.129519] [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: 12/03/2021] [Revised: 06/19/2022] [Accepted: 06/30/2022] [Indexed: 06/15/2023]
Abstract
The remobilization of metals accumulated in contaminated soils poses a threat to humans and ecosystems in general. Tracing metal fractionation provides valuable information for understanding the remobilization processes in smelting areas. Based on the difference between the isotopic system of Cd and Zn, this work aimed to couple isotope data and their leachability to identify possible remobilization processes in several soil types and land uses. For soil samples, the δ66/64Zn values ranged from 0.12 ± 0.05‰ to 0.28 ± 0.05‰ in Avilés (Spain) and from - 0.09 ± 0.05‰ to - 0.21 ± 0.05‰ in Příbram (Czech Republic), and the δ114/110Cd ranged from - 0.13 ± 0.05‰ to 0.01 ± 0.04‰ in Avilés and from - 0.86 ± 0.27‰ to - 0.24 ± 0.05‰ in Příbram. The metal fractions extracted using chemical extractions were always enriched in heavier Cd isotopes whilst Zn isotope systematics exhibited light or heavy enrichment according to the soil type and land uses. Coupling Zn and Cd systematics provided a tool for deciphering the mechanisms behind the remobilization processes: leaching of the anthropogenic materials and/or metal redistribution within the soil components prior to remobilization.
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Affiliation(s)
- G Ratié
- Department of Environmental Geosciences, Faculty of Environmental Sciences, Czech University of Life Sciences Prague, Kamýcká 129, Suchdol, 165 00 Prague, Czech Republic.
| | - Z Vaňková
- Department of Environmental Geosciences, Faculty of Environmental Sciences, Czech University of Life Sciences Prague, Kamýcká 129, Suchdol, 165 00 Prague, Czech Republic
| | - D Baragaño
- INDUROT and Environmental Biogeochemistry & Raw Materials Group, Campus de Mieres, University of Oviedo, 33600 Mieres, Spain
| | - R Liao
- Chengdu University of Technology, Chengdu 610059, China
| | - A Šípková
- Department of Environmental Geosciences, Faculty of Environmental Sciences, Czech University of Life Sciences Prague, Kamýcká 129, Suchdol, 165 00 Prague, Czech Republic
| | - J R Gallego
- INDUROT and Environmental Biogeochemistry & Raw Materials Group, Campus de Mieres, University of Oviedo, 33600 Mieres, Spain
| | - V Chrastný
- Department of Environmental Geosciences, Faculty of Environmental Sciences, Czech University of Life Sciences Prague, Kamýcká 129, Suchdol, 165 00 Prague, Czech Republic
| | - Š Lewandowská
- Department of Environmental Geosciences, Faculty of Environmental Sciences, Czech University of Life Sciences Prague, Kamýcká 129, Suchdol, 165 00 Prague, Czech Republic
| | - S Ding
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China
| | - M Komárek
- Department of Environmental Geosciences, Faculty of Environmental Sciences, Czech University of Life Sciences Prague, Kamýcká 129, Suchdol, 165 00 Prague, Czech Republic
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11
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Chen L, Han L, Feng Y, He J, Xing B. Soil structures and immobilization of typical contaminants in soils in response to diverse microplastics. JOURNAL OF HAZARDOUS MATERIALS 2022; 438:129555. [PMID: 35999728 DOI: 10.1016/j.jhazmat.2022.129555] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Revised: 07/05/2022] [Accepted: 07/06/2022] [Indexed: 06/15/2023]
Abstract
Microplastics (MPs) accumulation in soil ecosystems has become a worldwide issue. The influence of MPs on soil structures and contaminant transport has not been clearly unraveled. This study conducted soil column experiments covering four different treatments: soil without MPs (CK), soil with 0.5 wt% polyethylene (S+PE), soil with 0.5 wt% polyacrylonitrile (S+PAN), and soil with 0.5 wt% polyethylene terephthalate (S+PET). The interconnections between changes in soil structures and shifts in sorption efficiency for typical hydrophobic organic contaminants (e.g., phenanthrene (PHE)) and heavy metal (e.g., lead (Pb (II)) by soils induced by MPs were explored. MPs-added soils contained fewer macro-aggregates and lower aggregate stability compared to CK. Three MPs, particularly PE, promoted PHE sorption by soils but reduced Pb (II) sorption, which occurred in soils with or without dissolved organic carbon. The comparison between experimental and predicted sorption capacity, as well as the one-point sorption data of different aggregate sizes, showed that such variations in PHE and Pb (II) sorption were related to the shifts in soil aggregates besides from the physical mixture of soils with MPs. This finding is perspective to give an in-depth understanding of the effects of different MPs types on soil micro-environments and transport for contaminants.
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Affiliation(s)
- Liying Chen
- Guangdong Provincial Key Laboratory of Water Quality Improvement and Ecological Restoration for Watersheds, School of Ecology, Environment and Resources, Guangdong University of Technology, Guangzhou 510006, China
| | - Lanfang Han
- Guangdong Provincial Key Laboratory of Water Quality Improvement and Ecological Restoration for Watersheds, School of Ecology, Environment and Resources, Guangdong University of Technology, Guangzhou 510006, China; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 511458, China.
| | - Yanfang Feng
- Key Laboratory of Agro-Environment in Downstream of Yangtze Plain, Ministry of Agriculture and Rural Affairs, Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
| | - Jiehong He
- Guangdong Provincial Key Laboratory of Water Quality Improvement and Ecological Restoration for Watersheds, School of Ecology, Environment and Resources, Guangdong University of Technology, Guangzhou 510006, China
| | - Baoshan Xing
- Stockbridge School of Agriculture, University of Massachusetts, Amherst, MA 01003, United States
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12
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Ke W, Zeng J, Zhu F, Luo X, Feng J, He J, Xue S. Geochemical partitioning and spatial distribution of heavy metals in soils contaminated by lead smelting. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 307:119486. [PMID: 35595002 DOI: 10.1016/j.envpol.2022.119486] [Citation(s) in RCA: 48] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Revised: 04/24/2022] [Accepted: 05/14/2022] [Indexed: 06/15/2023]
Abstract
Heavy metals (HMs) pollution is a universal and complex problem at lead smelting sites. Further understanding on the distribution, coexistence relationship and occurrence form of multi-metals in soils should be taken prior to restoration on the contaminated sites. In this study, 222 soil samples in a typical abandoned lead smelting site were investigated to understand the spatial distribution and geochemical partitioning of HMs. The results showed that soil quality was seriously threatened by As, Pb and Cd, which expressed high spatial heterogeneity. Integration of sequential extraction, X-ray photoelectron spectroscopy and mineral liberation analysers were employed to qualify the geochemical partitioning of HMs. The data showed that Pb and As were mainly partitioned in the reducible phase and residue phase, where the maximum of As were 18% and 79%, and the maximum of Pb were 31% and 64%, respectively, whilst Cd was mainly partitioned with residue phase (about 25%) and weakly acid soluble phase (about 18%). Paulmooreite was the major important mineral host for Pb and As, whereas Cd predominantly existed in willemite. These minerals containing HMs could usually with Fe reside in the octahedral layer of clay minerals such as montmorillonite, and may also reside in the interlayer. Quartz, montmorillonite and goethite were closely associated with HMs minerals in contaminated soils, which limited vertical migration of HMs and potential risks to groundwater. The results enhanced the understanding of spatial distribution and occurrence behavior of HMs, whilst providing potential benefits to heavy metal stabilization and risks control at abandoned non-ferrous metal smelting sites.
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Affiliation(s)
- Wenshun Ke
- School of Metallurgy and Environment, Central South University, Changsha, 410083, PR China
| | - Jiaqing Zeng
- School of Metallurgy and Environment, Central South University, Changsha, 410083, PR China
| | - Feng Zhu
- School of Metallurgy and Environment, Central South University, Changsha, 410083, PR China; Chinese National Engineering Research Center for Control and Treatment of Heavy Metal Pollution, Central South University, Changsha, 410083, PR China
| | - Xinghua Luo
- School of Metallurgy and Environment, Central South University, Changsha, 410083, PR China
| | - Jingpei Feng
- School of Metallurgy and Environment, Central South University, Changsha, 410083, PR China
| | - Jin He
- School of Metallurgy and Environment, Central South University, Changsha, 410083, PR China
| | - Shengguo Xue
- School of Metallurgy and Environment, Central South University, Changsha, 410083, PR China; Chinese National Engineering Research Center for Control and Treatment of Heavy Metal Pollution, Central South University, Changsha, 410083, PR China.
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13
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Mordhorst A, Zimmermann I, Fleige H, Horn R. Environmental risk of (heavy) metal release from urns into cemetery soils. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 817:152952. [PMID: 34999077 DOI: 10.1016/j.scitotenv.2022.152952] [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] [Received: 09/15/2021] [Revised: 12/02/2021] [Accepted: 01/03/2022] [Indexed: 06/14/2023]
Abstract
Cremation of the deceased has become the most common funeral type in many countries in the world, including Germany. The ashes of the cremated human body (cremains) are transferred in an urn and most commonly buried in the soil. However, the possible environmental impacts of cremains on soils and groundwater have been rarely studied. In this context, it is still unclear whether or not the release of (heavy) metals like chromium, zinc, copper, nickel and lead from cremains and urns poses an environmental problem in urn grave soils. The aims of the study were to analyze the (heavy) metal content of two cremains from a 74-year-old male and 70-year-old female, and of soils in 6 cemeteries with urn graves in North and West Germany. Soil samples were taken from below the burial depth of 42 urns (upon expiry of the resting time) and from reference soils without urn burials (same cemetery site and depth). The two cremains differed significantly in their heavy metal content (zinc, nickel, copper, chromium), which originated from metal components of the deceased's clothing or burial objects or may have resulted from contrasting occupational exposure during the deceased's lives. Investigations at the cemetery sites revealed a high variability in (heavy) metal contents in the soil samples from below the buried urns. As expected, the accumulation of some element (e.g., lead and tin) in the soil increased with a higher degradation degree of the urns, but an enrichment in copper, chromium, nickel, and iron was also detected below only slightly corroded but not yet perforated urns, which were often made out of copper-bearing material and other alloying agents. This demonstrated that heavy metal releases into cemetery soils originated from both cremains and urn material.
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Affiliation(s)
- Anneka Mordhorst
- Institute of Plant Nutrition and Soil Science, Christian-Albrechts-University, Hermann-Rodewald-Str. 2, 24118 Kiel, Germany.
| | - Iris Zimmermann
- Institute of Plant Nutrition and Soil Science, Christian-Albrechts-University, Hermann-Rodewald-Str. 2, 24118 Kiel, Germany
| | - Heiner Fleige
- Institute of Plant Nutrition and Soil Science, Christian-Albrechts-University, Hermann-Rodewald-Str. 2, 24118 Kiel, Germany
| | - Rainer Horn
- Institute of Plant Nutrition and Soil Science, Christian-Albrechts-University, Hermann-Rodewald-Str. 2, 24118 Kiel, Germany
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14
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Varol M, Tokatlı C. Seasonal variations of toxic metal(loid)s in groundwater collected from an intensive agricultural area in northwestern Turkey and associated health risk assessment. ENVIRONMENTAL RESEARCH 2022; 204:111922. [PMID: 34453897 DOI: 10.1016/j.envres.2021.111922] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Revised: 08/01/2021] [Accepted: 08/16/2021] [Indexed: 06/13/2023]
Abstract
İpsala district located in the northwest of Turkey is an intensive agricultural area, where paddy cultivation has been carried out for more than 50 years. The main source for drinking water in the area is groundwater. Since large amounts of agrochemicals are applied to the paddy fields, groundwater in the study area can be contaminated with toxic metal (loid)s (TMs). In this study, levels of eight TMs in the drinking water samples taken from the district and its 22 villages in the dry and wet seasons were measured and compared with drinking water quality guidelines. In addition, non-carcinogenic and carcinogenic health risks, and pollution status of TMs were assessed. The mean values of Cd, Ni, Cu, Zn, Mn, Pb, As and Cr in both seasons were below the drinking water limits. High clay content and low infiltration rate of the soils in the study area may have caused low TM concentrations. The TMs levels were higher in the wet season due to high rainfall intensity. Metal pollution indices indicated that groundwater quality is suitable for potable uses. All hazard quotient and hazard index results for children and adults in both seasons were lower than the acceptable risk level of 1. Carcinogenic risk results of As and Cr in both seasons were within or below the acceptable risk range. These findings revealed that the TMs in the drinking water would not pose health risks to the local residents.
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Affiliation(s)
- Memet Varol
- Malatya Turgut Özal University, Doğanşehir Vahap Küçük Vocational School, Department of Aquaculture, Malatya, Turkey.
| | - Cem Tokatlı
- Trakya University, Laboratory Technology Department, İpsala, Edirne, Turkey
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15
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Chen KY, Yang PT, Chang HF, Yeh KC, Wang SL. Soil gallium speciation and resulting gallium uptake by rice plants. JOURNAL OF HAZARDOUS MATERIALS 2022; 424:127582. [PMID: 34741941 DOI: 10.1016/j.jhazmat.2021.127582] [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] [Received: 06/06/2021] [Revised: 10/16/2021] [Accepted: 10/20/2021] [Indexed: 06/13/2023]
Abstract
Gallium (Ga) is widely used in high-tech industries and is an emerging contaminant in the environment. This study aimed to determine Ga speciation in soils and Ga accumulation in rice plants (Oryza sativa L.) grown in three Ga-contaminated soils. The results showed that, among the soils, the acidic soil with a coarse texture had the highest soil Ga availability, which enhanced Ga uptake by rice roots. The Ga K-edge X-ray absorption near edge structure and sequential extraction results of the soils showed that the predominant species of Ga associated with iron hydroxides transformed to Ga(OH)3 precipitates, and the residue fraction increased with rice-growing time, resulting in lower Ga uptake by rice roots in the second half period of rice cultivation. A large fraction of Ga was accumulated in the rice roots, with only a small portion of Ga was transferred to the shoots and then to the rice grains. This study revealed that Ga speciation in soil-rice plant systems varied during rice cultivation and determined soil Ga availability to rice plants. Gallium accumulated in rice grains is distributed homogenously in the endosperm of the grains, suggesting a potential risk to public health via the intake of rice grains harvested from Ga-contaminated paddy fields.
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Affiliation(s)
- Kai-Yue Chen
- Department of Agricultural Chemistry, National Taiwan University, Taipei 106319, Taiwan
| | - Puu-Tai Yang
- Department of Agricultural Chemistry, National Taiwan University, Taipei 106319, Taiwan
| | - Hsin-Fang Chang
- Department of Agricultural Chemistry, National Taiwan University, Taipei 106319, Taiwan; Agricultural Biotechnology Research Center, Academia Sinica, Taipei 115201, Taiwan
| | - Kuo-Chen Yeh
- Agricultural Biotechnology Research Center, Academia Sinica, Taipei 115201, Taiwan
| | - Shan-Li Wang
- Department of Agricultural Chemistry, National Taiwan University, Taipei 106319, Taiwan.
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16
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Bauer TV, Pinskii DL, Minkina TM, Shuvaeva VA, Soldatov AV, Mandzhieva SS, Tsitsuashvili VS, Nevidomskaya DG, Semenkov IN. Application of XAFS and XRD methods for describing the copper and zinc adsorption characteristics in hydromorphic soils. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2022; 44:335-347. [PMID: 33180207 DOI: 10.1007/s10653-020-00773-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Accepted: 10/30/2020] [Indexed: 06/11/2023]
Abstract
Modeling metal sorption in soils is of great importance to predict the fate of heavy metals and to assess the actual risk driven from pollution. The present study focuses on adsorption of HM ions on two types of hydromorphic soils, including calcaric fluvisols loamic and calcaric fluvic arenosols. The individual and competitive adsorption behaviors of Cu and Zn on soils and soil constituents are evaluated comprehensively. It is established that the sorption processes were best described with the Langmuir model. The results suggest that the calcaric fluvic arenosols are more vulnerable to heavy metal input compared to fluvisols loamic. In all cases, Cu had a higher range of values of the adsorption process parameters relative to Zn. The Zn is likely to be the most critical environmental factor in such soils since it exhibited a decreased sorption under competitive conditions. The retention mechanisms of HM in hydromorphic soils are considered. Based on theoretical calculations of ion activity in soil solutions using solubility diagrams of Cu and Zn compounds, the possibility of precipitation of Cu hydroxide and Zn carbonate in the studied soils is shown. Direct physical methods of nondestructive testing (XAFS and XRD) are applied to experimentally prove the formation of these HM compounds on the surface of montmorillonite, the dominant mineral in hydromorphic soils, and calcite. Thus, the combination of both physicochemical methods and direct physical methods can provide a large amount of real information about the mechanisms of HM retain with solid phases.
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Affiliation(s)
- Tatiana V Bauer
- Federal Research Centre, The Southern Scientific Centre of the Russian Academy of Sciences, Rostov-on-Don, 344006, Russian Federation
| | - David L Pinskii
- Institute of Physicochemical and Biological Problems of Soil Science, Russian Academy of Sciences, Institutskaya str, 2, Pushchino, Pushchino, 142290, Russian Federation.
| | - Tatiana M Minkina
- Southern Federal University, Rostov-on-Don, 344006, Russian Federation
| | | | | | | | | | | | - Ivan N Semenkov
- Lomonosov Moscow State University, Moscow, 119991, Russian Federation
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17
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Le Bars M, Legros S, Levard C, Chevassus-Rosset C, Montes M, Tella M, Borschneck D, Guihou A, Angeletti B, Doelsch E. Contrasted fate of zinc sulfide nanoparticles in soil revealed by a combination of X-ray absorption spectroscopy, diffusive gradient in thin films and isotope tracing. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 292:118414. [PMID: 34728325 DOI: 10.1016/j.envpol.2021.118414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 10/19/2021] [Accepted: 10/27/2021] [Indexed: 06/13/2023]
Abstract
Incidental zinc sulfide nanoparticles (nano-ZnS) are spread on soils through organic waste (OW) recycling. Here we performed soil incubations with synthetic nano-ZnS (3 nm crystallite size), representative of the form found in OW. We used an original set of techniques to reveal the fate of nano-ZnS in two soils with different properties. 68Zn tracing and nano-DGT were combined during soil incubation to discriminate the available natural Zn from the soil, and the available Zn from the dissolved nano-68ZnS. This combination was crucial to highlight the dissolution of nano-68ZnS as of the third day of incubation. Based on the extended X-ray absorption fine structure, we revealed faster dissolution of nano-ZnS in clayey soil (82% within 1 month) than in sandy soil (2% within 1 month). However, the nano-DGT results showed limited availability of Zn released by nano-ZnS dissolution after 1 month in the clayey soil compared with the sandy soil. These results highlighted: (i) the key role of soil properties for nano-ZnS fate, and (ii) fast dissolution of nano-ZnS in clayey soil. Finally, the higher availability of Zn in the sandy soil despite the lower nano-ZnS dissolution rate is counterintuitive. This study demonstrated that, in addition to nanoparticle dissolution, it is also essential to take the availability of released ions into account when studying the fate of nanoparticles in soil.
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Affiliation(s)
- Maureen Le Bars
- Aix Marseille Univ, CNRS, IRD, INRAE, Coll France, CEREGE, Aix-en-Provence, France; UPR Recyclage et Risque, CIRAD, F-34398, Montpellier, France; Recyclage et Risque, Univ Montpellier, CIRAD, Montpellier, France.
| | - Samuel Legros
- Recyclage et Risque, Univ Montpellier, CIRAD, Montpellier, France; UPR Recyclage et Risque, CIRAD, 18524, Dakar, Senegal
| | - Clément Levard
- Aix Marseille Univ, CNRS, IRD, INRAE, Coll France, CEREGE, Aix-en-Provence, France
| | - Claire Chevassus-Rosset
- UPR Recyclage et Risque, CIRAD, F-34398, Montpellier, France; Recyclage et Risque, Univ Montpellier, CIRAD, Montpellier, France
| | - Mélanie Montes
- UPR Recyclage et Risque, CIRAD, F-34398, Montpellier, France; Recyclage et Risque, Univ Montpellier, CIRAD, Montpellier, France
| | - Marie Tella
- CIRAD, US Analyses, F-34398, Montpellier, France; Analyses, Univ Montpellier, CIRAD, Montpellier, France
| | - Daniel Borschneck
- Aix Marseille Univ, CNRS, IRD, INRAE, Coll France, CEREGE, Aix-en-Provence, France
| | - Abel Guihou
- Aix Marseille Univ, CNRS, IRD, INRAE, Coll France, CEREGE, Aix-en-Provence, France
| | - Bernard Angeletti
- Aix Marseille Univ, CNRS, IRD, INRAE, Coll France, CEREGE, Aix-en-Provence, France
| | - Emmanuel Doelsch
- UPR Recyclage et Risque, CIRAD, F-34398, Montpellier, France; Recyclage et Risque, Univ Montpellier, CIRAD, Montpellier, France
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18
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Kappler A, Bryce C, Mansor M, Lueder U, Byrne JM, Swanner ED. An evolving view on biogeochemical cycling of iron. Nat Rev Microbiol 2021; 19:360-374. [PMID: 33526911 DOI: 10.1038/s41579-020-00502-7] [Citation(s) in RCA: 207] [Impact Index Per Article: 69.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/08/2020] [Indexed: 01/23/2023]
Abstract
Biogeochemical cycling of iron is crucial to many environmental processes, such as ocean productivity, carbon storage, greenhouse gas emissions and the fate of nutrients, toxic metals and metalloids. Knowledge of the underlying processes involved in iron cycling has accelerated in recent years along with appreciation of the complex network of biotic and abiotic reactions dictating the speciation, mobility and reactivity of iron in the environment. Recent studies have provided insights into novel processes in the biogeochemical iron cycle such as microbial ammonium oxidation and methane oxidation coupled to Fe(III) reduction. They have also revealed that processes in the biogeochemical iron cycle spatially overlap and may compete with each other, and that oxidation and reduction of iron occur cyclically or simultaneously in many environments. This Review discusses these advances with particular focus on their environmental consequences, including the formation of greenhouse gases and the fate of nutrients and contaminants.
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Affiliation(s)
- Andreas Kappler
- Geomicrobiology, Center for Applied Geosciences, University of Tübingen, Tübingen, Germany.
| | - Casey Bryce
- School of Earth Sciences, University of Bristol, Bristol, UK
| | - Muammar Mansor
- Geomicrobiology, Center for Applied Geosciences, University of Tübingen, Tübingen, Germany
| | - Ulf Lueder
- Geomicrobiology, Center for Applied Geosciences, University of Tübingen, Tübingen, Germany
| | - James M Byrne
- School of Earth Sciences, University of Bristol, Bristol, UK
| | - Elizabeth D Swanner
- Department of Geological and Atmospheric Sciences, Iowa State University, Ames, IA, USA
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19
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Arancibia-Miranda N, Manquián-Cerda K, Pizarro C, Maldonado T, Suazo-Hernández J, Escudey M, Bolan N, Sarkar B. Mechanistic insights into simultaneous removal of copper, cadmium and arsenic from water by iron oxide-functionalized magnetic imogolite nanocomposites. JOURNAL OF HAZARDOUS MATERIALS 2020; 398:122940. [PMID: 32768826 DOI: 10.1016/j.jhazmat.2020.122940] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Revised: 05/07/2020] [Accepted: 05/08/2020] [Indexed: 06/11/2023]
Abstract
Imogolite and magnetic imogolite-Fe oxide nanocomposites (Imo-Fe50 and Imo-Fe25, at 50 and 25 % Fe loading (w/w), respectively) were synthesized and tested for the removal of aqueous copper (Cu), cadmium (Cd), and arsenic (As) pollutants. The materials were characterized by transmission electron microscopy, and specific surface area and isoelectric point measurements. The Fe-containing samples were additionally characterized by Mössbauer spectroscopy and vibrating-sample magnetometry. Significant differences were found in the morphological, electrophoretic, and magnetic characteristics between imogolite and the nanocomposites. The in-situ Fe-oxide precipitation process modified the active surface sites of the imogolite. The Fe-oxide, mainly magnetite, favored the contaminants' adsorption over the pristine imogolite. The adsorption kinetics of these pollutants were adequately described by the pseudo-second order and intraparticle diffusion models. The kinetic models showed that surface adsorption was more important than intraparticle diffusion in the removal of the pollutants by all the adsorbents. The Langmuir-Freundlich model described the experimental adsorption data, and both nanocomposites showed greater adsorption capacity than the imogolite. The adsorption of Cu and Cd was sensitive to cationic competition, showing a decrease of the adsorption capacity when the two cations coexisted, while their adsorption increased in the presence of arsenate.
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Affiliation(s)
- Nicolás Arancibia-Miranda
- Center for the Development of Nanoscience and Nanotechnology, CEDENNA, 9170124, Santiago, Chile; Facultad de Química y Biología, Universidad de Santiago de Chile, Av. B. O'Higgins, 3363, Santiago, Chile.
| | - Karen Manquián-Cerda
- Facultad de Química y Biología, Universidad de Santiago de Chile, Av. B. O'Higgins, 3363, Santiago, Chile
| | - Carmen Pizarro
- Facultad de Química y Biología, Universidad de Santiago de Chile, Av. B. O'Higgins, 3363, Santiago, Chile
| | - Tamara Maldonado
- Facultad de Química y Biología, Universidad de Santiago de Chile, Av. B. O'Higgins, 3363, Santiago, Chile
| | - Jonathan Suazo-Hernández
- Programa de Doctorado en Ciencias de Recursos Naturales Universidad de La Frontera, (BIOREN-UFRO), Universidad de La Frontera, Avenida Francisco Salazar 01145, Temuco, Chile
| | - Mauricio Escudey
- Center for the Development of Nanoscience and Nanotechnology, CEDENNA, 9170124, Santiago, Chile; Facultad de Química y Biología, Universidad de Santiago de Chile, Av. B. O'Higgins, 3363, Santiago, Chile
| | - Nanthi Bolan
- Global Centre for Environmental Remediation (GCER), Advanced Technology Centre, Faculty of Science, The University of Newcastle, Callaghan, NSW 2308, Australia
| | - Binoy Sarkar
- Lancaster Environment Centre, Lancaster University, Lancaster, LA1 4YQ, UK.
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20
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Variations in Spectral Signals of Heavy Metal Contamination in Mine Soils Controlled by Mineral Assemblages. REMOTE SENSING 2020. [DOI: 10.3390/rs12203273] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
This paper illustrates a spectroscopic analysis of heavy metal concentration in mine soils with the consideration of mineral assemblages originated by weathering and mineralization processes. The mine soils were classified into two groups based on the mineral composition: silicate clay mineral group (Group A) and silicate–carbonate–skarn–clay mineral group (Group B). Both soil groups are contaminated with Cu, Zn, As, and Pb, while the contamination level was higher for Group A. The two groups exhibit different geochemical behaviors with different heavy metal contamination. The spectral variation associated with heavy metal was highly correlated with absorption features of clay and iron oxide minerals for Group A, and the absorption features of skarn minerals, iron oxides, and clay minerals for Group B. It indicates that the geochemical adsorption of heavy metal elements mainly occurs with clay minerals and iron oxides from weathering, and of skarn minerals, iron oxides, and clay minerals from mineralization. Therefore, soils from different secondary mineral production processes should be analyzed with different spectral models. We constructed spectral models for predicting Cu, Zn, As, and Pb in soil group A and Zn and Pb in soil group B using corresponding absorptions. Both models were statistically significant with sufficient accuracy.
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Moreno-Jiménez E, Ochoa-Hueso R, Plaza C, Aceña-Heras S, Flagmeier M, Elouali FZ, Ochoa V, Gozalo B, Lázaro R, Maestre FT. Biocrusts buffer against the accumulation of soil metallic nutrients induced by warming and rainfall reduction. Commun Biol 2020; 3:325. [PMID: 32581276 PMCID: PMC7314843 DOI: 10.1038/s42003-020-1054-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Accepted: 06/05/2020] [Indexed: 11/09/2022] Open
Abstract
The availability of metallic nutrients in dryland soils, many of which are essential for the metabolism of soil organisms and vascular plants, may be altered due to climate change-driven increases in aridity. Biocrusts, soil surface communities dominated by lichens, bryophytes and cyanobacteria, are ecosystem engineers known to exert critical functions in dryland ecosystems. However, their role in regulating metallic nutrient availability under climate change is uncertain. Here, we evaluated whether well-developed biocrusts modulate metallic nutrient availability in response to 7 years of experimental warming and rainfall reduction in a Mediterranean dryland located in southeastern Spain. We found increases in the availability of K, Mg, Zn and Na under warming and rainfall exclusion. However, the presence of a well-developed biocrust cover buffered these effects, most likely because its constituents can uptake significant quantities of available metallic nutrients. Our findings suggest that biocrusts, a biotic community prevalent in drylands, exert an important role in preserving and protecting metallic nutrients in dryland soils from leaching and erosion. Therefore, we highlight the need to protect them to mitigate undesired effects of soil degradation driven by climate change in this globally expanding biome.
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Affiliation(s)
- Eduardo Moreno-Jiménez
- Department of Agricultural and Food Chemistry, Universidad Autónoma de Madrid, 28049, Madrid, Spain.
| | - Raúl Ochoa-Hueso
- Department of Biology, IVAGRO, University of Cádiz, Campus de Excelencia Internacional Agroalimentario (ceiA3), Campus del Rio San Pedro, 11510, Puerto Real, Cádiz, Spain
| | - César Plaza
- Instituto de Ciencias Agrarias, Consejo Superior de Investigaciones Científicas, Serrano 115 bis, 28006, Madrid, Spain
| | - Sara Aceña-Heras
- Department of Agricultural and Food Chemistry, Universidad Autónoma de Madrid, 28049, Madrid, Spain
| | - Maren Flagmeier
- Department of Agricultural and Food Chemistry, Universidad Autónoma de Madrid, 28049, Madrid, Spain.,Department of Biology (Botany), Universidad Autónoma de Madrid, 28049, Madrid, Spain
| | - Fatima Z Elouali
- Department of Agronomy, Faculty of Sciences of Nature and Life, University of Mascara, 29000, Mascara, Algeria
| | - Victoria Ochoa
- Instituto Multidisciplinar para el Estudio del Medio "Ramon Margalef", Universidad de Alicante, Carretera de San Vicente del Raspeig, s/n 03690, San Vicente del Raspeig, Alicante, Spain
| | - Beatriz Gozalo
- Instituto Multidisciplinar para el Estudio del Medio "Ramon Margalef", Universidad de Alicante, Carretera de San Vicente del Raspeig, s/n 03690, San Vicente del Raspeig, Alicante, Spain
| | - Roberto Lázaro
- Estación Experimental de Zonas Áridas Consejo Superior de Investigaciones Científicas, Carretera de Sacramento, s/n 04120La, Cañada de San Urbano, Almería, Spain
| | - Fernando T Maestre
- Instituto Multidisciplinar para el Estudio del Medio "Ramon Margalef", Universidad de Alicante, Carretera de San Vicente del Raspeig, s/n 03690, San Vicente del Raspeig, Alicante, Spain.,Departamento de Ecología, Universidad de Alicante, Carretera de San Vicente del Raspeig, s/n 03690, San Vicente del Raspeig, Alicante, Spain
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Abstract
Heavy metals have caused serious environmental issues, which are enriched during open-cast coal mining. It is urgent to develop sustainable remediation materials to protect and restore the contaminated soil and aquifers in mining areas. The feasibility of applying Pisha sandstone (PS) and Na+-modified Pisha sandstone (Na-PS) for adsorption of heavy metals was evaluated. Na-PS exhibited maximum Cd(II) and Cu(II) removal rates of 65.9% and 99.8%, respectively, exceeding the corresponding values for PS (8.2% and 1.3%, respectively) in 1 × 10−3 M solution. Efficient heavy metals adsorption occurred in the pH range 5.0–6.0. The adsorption of Cu(II) and Cd(II) on PS and Na-PS was characterized by kinetic models and adsorption isotherms and was well represented by pseudo-second-order kinetics (R2 > 0.99) and the Langmuir and Freundlich isotherm models. The values of the thermodynamic parameters indicated that the interactions were spontaneous endothermic reactions. Binary solutions adsorption isotherms indicated that the linearity of the adsorption amount and initial concentration of Cu(II) and Cd(II) was better in certain ranges and the adsorbents were selective towards Cu(II) rather than Cd(II). Therefore, PSs can be used as excellent adsorbents for Cu(II) and Cd(II) remediation from contaminated surface water.
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Song C, Yuan W, Shan S, Ma Q, Zhang H, Wang X, Niazi NK, Wang H. Changes of nutrients and potentially toxic elements during hydrothermal carbonization of pig manure. CHEMOSPHERE 2020; 243:125331. [PMID: 31995863 DOI: 10.1016/j.chemosphere.2019.125331] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Revised: 09/17/2019] [Accepted: 11/05/2019] [Indexed: 06/10/2023]
Abstract
The effects of reaction temperature, residence time, sulfuric acid and potassium hydroxide on the total concentration and speciation of N and P, potentially toxic elements (salts and metal elements) of pig manure during its hydrothermal carbonization (HTC) were investigated. Concentrations of Cl, K, Na and Mg in the hydrochars were much lower but total N, P and nitrate-nitrogen (NO3--N) contents were significantly higher than in untreated pig manure. The acid-extractable fractions of Cu and Zn in hydrochars were 0.03-0.63 and 0.17-0.66 times lower than those in pig manure and decreased significantly with increasing reaction temperature. The addition of sulfuric acid (H2SO4) or potassium hydroxide (KOH) in HTC reduced the contents of P, Ca, Mg, Cl and heavy metal elements (HMEs) in hydrochars, and the removal rates of Cu and Zn were up to 55% and 59%, respectively. Overall, the rapid treatment of pig manure by HTC reduced the harm of salts and HMEs, and effectively recovered the nutrients in pig manure. The HTC under alkaline conditions was desirable for optimizing the main elemental composition of the hydrochars.
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Affiliation(s)
- Chengfang Song
- Key Laboratory of Soil Contamination Bioremediation of Zhejiang Province, Zhejiang A&F University, Hangzhou, 311300, China.
| | - Wenqiao Yuan
- Key Laboratory of Soil Contamination Bioremediation of Zhejiang Province, Zhejiang A&F University, Hangzhou, 311300, China.
| | - Shengdao Shan
- Key Laboratory of Recycling and Eco-treatment of Waste Biomass of Zhejiang Province, Zhejiang University of Science and Technology, Hangzhou, 310023, China.
| | - Qi Ma
- Key Laboratory of Soil Contamination Bioremediation of Zhejiang Province, Zhejiang A&F University, Hangzhou, 311300, China.
| | - Haibo Zhang
- Key Laboratory of Soil Contamination Bioremediation of Zhejiang Province, Zhejiang A&F University, Hangzhou, 311300, China.
| | - Xudong Wang
- Key Laboratory of Soil Contamination Bioremediation of Zhejiang Province, Zhejiang A&F University, Hangzhou, 311300, China.
| | - Nabeel Khan Niazi
- Institute of Soil and Environmental Sciences, University of Agriculture Faisalabad, Faisalabad, 38040, Pakistan; School of Civil Engineering and Surveying, University of Southern Queensland, Toowoomba, 4350, Queensland, Australia.
| | - Hailong Wang
- Biochar Engineering Technology Research Center of Guangdong Province, School of Environmental and Chemical Engineering, Foshan University, Foshan, Guangdong, 528000, China.
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Oguntade OA, Adegbuyi AA, Nassir AL, Olagunju SO, Salami WA, Adewale RO. Geoassessment of heavy metals in rural and urban floodplain soils: health implications for consumers of Celosia argentea and Corchorus olitorius vegetables in Sagamu, Nigeria. ENVIRONMENTAL MONITORING AND ASSESSMENT 2020; 192:164. [PMID: 32025899 DOI: 10.1007/s10661-020-8077-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2019] [Accepted: 01/08/2020] [Indexed: 06/10/2023]
Abstract
Vegetable gardening in floodplains in western Nigeria has assumed economic significance but with attendant pressure on urban field in the dry season. This study assessed soil properties and bioconcentration of cadmium (Cd), iron (Fe) and lead (Pb), in edible parts of Celosia argentea and Corchorus olitorius grown in floodplains. Soil and vegetable samples were collected at 20 m intervals from rural (Atoyo and Ewuga) and urban (GRA Rd. and Lafarge) floodplain gardens in Sagamu. Six samples were collected per location making a total of 24 samples each of soil and vegetable. Samples were analyzed for soil properties and heavy metal concentration in the vegetables. Transfer factor (TF), contamination factor (CF), daily intake of metals (DIM), health risk index (HRI) and geoaccumulation index (Igeo) were also determined. Soil properties varied significantly, with the highest soil concentration of Cd (0.91 mg kg-1) and Fe (208.20 mg kg-1) recorded at Lafarge. The highest soil Pb (223.77 mg kg-1) was at Atoyo. Bioaccumulation of Fe was significantly (p ≤ 0.05) higher in C. argentea than C. olitorius. Heavy metal bioaccumulation beyond allowable limits was recorded for Cd (0.46 mg kg-1) and Pb (49.30 mg kg-1) by C. argentea and C. olitorius, respectively. Soil contamination was dominated by Cd at Lafarge and by Pb at Atoyo. The DIM and HRI indices indicated no risk of Cd, Fe and Pb consumption in the vegetables. Geoaccumulation index revealed that Lafarge and Atoyo soils were extremely contaminated with Cd and Pb, respectively. Leafy vegetables grown in urban and rural floodplain soils adjacent to waste dumpsite are accumulators of Cd and Pb with food poisoning as the consequence.
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Affiliation(s)
- Oladele A Oguntade
- Department of Crop Production, College of Agricultural Sciences, Olabisi Onabanjo University, P.M.B. 0012, Ayetoro Campus, Ayetoro, Ogun State, Nigeria.
| | - Adetutu A Adegbuyi
- Department of Crop Production, College of Agricultural Sciences, Olabisi Onabanjo University, P.M.B. 0012, Ayetoro Campus, Ayetoro, Ogun State, Nigeria
| | - Adesola L Nassir
- Department of Crop Production, College of Agricultural Sciences, Olabisi Onabanjo University, P.M.B. 0012, Ayetoro Campus, Ayetoro, Ogun State, Nigeria
| | - Solomon O Olagunju
- Department of Crop Production, College of Agricultural Sciences, Olabisi Onabanjo University, P.M.B. 0012, Ayetoro Campus, Ayetoro, Ogun State, Nigeria
| | - Waheed A Salami
- Department of Fisheries, Forestry and Wildlife, College of Agricultural Sciences, Olabisi Onabanjo University, P.M.B. 0012, Ayetoro Campus, Ayetoro, Ogun State, Nigeria
| | - Rilwan O Adewale
- Department of Fisheries, Forestry and Wildlife, College of Agricultural Sciences, Olabisi Onabanjo University, P.M.B. 0012, Ayetoro Campus, Ayetoro, Ogun State, Nigeria
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Cornu JY, Randriamamonjy S, Gutierrez M, Rocco K, Gaudin P, Ouerdane L, Lebeau T. Copper phytoavailability in vineyard topsoils as affected by pyoverdine supply. CHEMOSPHERE 2019; 236:124347. [PMID: 31310975 DOI: 10.1016/j.chemosphere.2019.124347] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Revised: 06/21/2019] [Accepted: 07/09/2019] [Indexed: 06/10/2023]
Abstract
Pyoverdine (Pvd) is a bacterial siderophore produced by some Pseudomonads species that can bind copper in addition to iron in soil. Pvd is expected to alter the dynamics and the ecotoxicity of Cu in vineyard soils. This study investigated the extent to which the mobility and the phytoavailability of Cu varied among vineyard soils with different pH and how they were affected by a supply of Pvd. Pvd was supplied (or not) to ten vineyard topsoils with pH ranging from 5.9 to 8.6 before metal was extracted with 0.005 M CaCl2. Cu mobility was assessed through its total concentration and Cu phytoavailability through its free ionic concentration measured in the CaCl2 extract. Cu mobility varied by a factor of six and Cu phytoavailability by a factor of 5000 among the soil samples. In the CaCl2 extract, the concentration of Cu2+ was not correlated with the concentration of total Cu but was correlated with pH. This revealed that Cu phytoavailability depends to a great extent on Cu complexation in soil pore water, the latter being highly sensitive to pH. Adding Pvd enhanced the mobility of Cu in the soils including in carbonate soils. The Pvd-mobilization factor for Cu varied from 1.4 to 8 among soils, linked to the availability of Fe and Al in the solid phase and to Pvd partitioning between the solid and the liquid phase. Adding Pvd reduced the concentration of Cu2+ in CaCl2 extract, which challenges the idea of using Pvd-producing bacteria to promote Cu phytoextraction.
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Affiliation(s)
- J Y Cornu
- ISPA, Bordeaux Sciences Agro, INRA, 33140, Villenave d'Ornon, France.
| | - S Randriamamonjy
- ISPA, Bordeaux Sciences Agro, INRA, 33140, Villenave d'Ornon, France; LPG, UMR 6112 CNRS-Université de Nantes, BP 92208, 44322, Nantes, Cedex 3, France
| | - M Gutierrez
- ISPA, Bordeaux Sciences Agro, INRA, 33140, Villenave d'Ornon, France
| | - K Rocco
- ISPA, Bordeaux Sciences Agro, INRA, 33140, Villenave d'Ornon, France
| | - P Gaudin
- LPG, UMR 6112 CNRS-Université de Nantes, BP 92208, 44322, Nantes, Cedex 3, France
| | - L Ouerdane
- IPREM, UMR 5254 CNRS-Université de Pau et des Pays de l'Adour, Hélioparc, 64053, Pau, France
| | - T Lebeau
- LPG, UMR 6112 CNRS-Université de Nantes, BP 92208, 44322, Nantes, Cedex 3, France
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Zhang Z, He S, Zhang Y, Zhang K, Wang J, Jing R, Yang X, Hu Z, Lin X, Li Y. Spectroscopic investigation of Cu 2+, Pb 2+ and Cd 2+ adsorption behaviors by chitosan-coated argillaceous limestone: Competition and mechanisms. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2019; 254:112938. [PMID: 31404731 DOI: 10.1016/j.envpol.2019.07.106] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Revised: 07/07/2019] [Accepted: 07/20/2019] [Indexed: 06/10/2023]
Abstract
In the present study, the competitive adsorption of Cu2+, Pb2+, and Cd2+ by a novel natural adsorbent (i.e., argillaceous limestone) modified with chitosan (C-AL) was investigated. The results demonstrated that both intraparticle diffusion and chemisorption marked significant contributions to the Cu2+ adsorption process by both raw argillaceous limestone (R-AL) and C-AL in mono-metal adsorption systems. Antagonism was found to be the predominant competitive effect for Cu2+, Pb2+ and Cd2+ adsorptions by C-AL in the multi-metal adsorption system. The three-dimensional simulation and FTIR analysis revealed that the presence of Cu2+ suppressed Pb2+ and Cd2+ adsorptions, while the effect of Cd2+ on Cu2+ and Pb2+ adsorptions was insignificant. The spectroscopic analyses evidenced that amide groups in C-AL played a crucial role in metal adsorption. The preferential adsorptions of Pb2+ > Cu2+ > Cd2+ were likely due to the different affinities of the metals to the lone pair of electrons on the N atom from the amide groups and/or the O atoms from the -OH and -COO- groups on C-AL. The interactions between C-AL and metal ions and between various metal species influenced their competitive adsorption behaviors. C-AL exhibited a superior metal adsorption capacity in comparison with that the capacities of other natural adsorbents reported during the last decade, suggesting its potential practical applications.
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Affiliation(s)
- Zhen Zhang
- College of Natural Resources and Environment, Joint Institute for Environmental Research & Education, South China Agricultural University, Guangzhou 510642, China
| | - Shuran He
- College of Resources and Environment, Yunnan Agricultural University, Kunming 650201, China
| | - Yulong Zhang
- College of Natural Resources and Environment, Joint Institute for Environmental Research & Education, South China Agricultural University, Guangzhou 510642, China
| | - Kun Zhang
- College of Natural Resources and Environment, Joint Institute for Environmental Research & Education, South China Agricultural University, Guangzhou 510642, China
| | - Jinjin Wang
- College of Natural Resources and Environment, Joint Institute for Environmental Research & Education, South China Agricultural University, Guangzhou 510642, China
| | - Ran Jing
- Department of Civil and Environmental Engineering, University of Maryland at College Park, MD 20742, USA
| | - Xingjian Yang
- College of Natural Resources and Environment, Joint Institute for Environmental Research & Education, South China Agricultural University, Guangzhou 510642, China
| | - Zheng Hu
- College of Natural Resources and Environment, Joint Institute for Environmental Research & Education, South China Agricultural University, Guangzhou 510642, China
| | - Xiaojing Lin
- College of Natural Resources and Environment, Joint Institute for Environmental Research & Education, South China Agricultural University, Guangzhou 510642, China
| | - Yongtao Li
- College of Natural Resources and Environment, Joint Institute for Environmental Research & Education, South China Agricultural University, Guangzhou 510642, China; Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin 300191, China.
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Sonoda K, Hashimoto Y, Wang SL, Ban T. Copper and zinc in vineyard and orchard soils at millimeter vertical resolution. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 689:958-962. [PMID: 31280176 DOI: 10.1016/j.scitotenv.2019.06.486] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2019] [Revised: 06/19/2019] [Accepted: 06/28/2019] [Indexed: 06/09/2023]
Abstract
Intensive uses of agrochemicals and soil amendments often cause the elevation of Cu and Zn concentrations in vineyard (VY) and orchard soils. The concentration and speciation of Cu and Zn in the soils at millimeter resolution is critical to understanding the risk of transport of these metals via surface runoff and infiltration. The objective of this study was to investigate the concentration and chemical species of Zn and Cu in VY and persimmon (PS) soils at millimeter vertical resolution. The soils were collected with 5 mm increments down to 5 cm depth and with 5 cm increments down to 25 cm depth. The total concentration and chemical species of Zn and Cu were determined by total digestion and X-ray absorption fine structure (XAFS) spectroscopy, respectively. The Zn concentration of VY soil reached a maximum of 290 mg kg-1 at the uppermost layer of the profile (0.5-1.0 cm). The Cu concentration of VY soil reached a maximum of 201 mg kg-1 (10-15 cm). These Zn and Cu concentrations were greater than background levels. Zinc K-edge XAFS spectroscopy determined that the uppermost layer of VY soil (0-0.5 cm) contained 42% Zn associated with humus and lesser extent of Zn associated with gibbsite (37%) and kaolinite (21%). Zinc associated with humus was not observed in the VY soil profiles below 0.5 cm, whereas Zn associated with gibbsite and kaolinite contributed >83% of total Zn species. Copper K-edge XAFS spectroscopy determined the presence of Cu bonded with humus (40-67%) and Cu adsorbed on kaolinite (26-45%) in the entire soil profile. Our study found the remarkable variation of Cu and Zn concentration and speciation within several centimeters from the soil surface in vineyard and orchard landscapes.
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Affiliation(s)
- Kent Sonoda
- Department of Bioapplications and Systems Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo 1848588, Japan
| | - Yohey Hashimoto
- Department of Bioapplications and Systems Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo 1848588, Japan.
| | - Shan-Li Wang
- Department of Agricultural Chemistry, National Taiwan University, No. 1, Section 4, Roosevelt Rd, Da'an District, Taipei 10617, Taiwan
| | - Takuya Ban
- Faculty of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwaicho, Fuchu, Tokyo 1838509, Japan
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Johnsen IV, Aaneby J. Soil intake in ruminants grazing on heavy-metal contaminated shooting ranges. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 687:41-49. [PMID: 31202012 DOI: 10.1016/j.scitotenv.2019.06.086] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Revised: 06/05/2019] [Accepted: 06/05/2019] [Indexed: 06/09/2023]
Abstract
Shooting ranges contain copper and lead from spent ammunition, this contamination can represent a risk for ruminants grazing there. The present study investigated the intake of copper and lead by sheep and cattle grazing on shooting ranges. Three factors are important for the ingested dose of metals: soil ingestion rate, accumulation of the metals in plants and grazing behavior. Up to 3700 mg Pb/kg dry weight (dw) and 1654 mg Cu/kg (dw) was found in soil and up to 52 mg Pb/kg (dw) and 35 mg Cu/kg (dw) was found in grass. The limit for sensitive land use set by the Norwegian Environment Agency is 60 mg Pb/kg and 100 mg Cu/kg, and the EU limit in fodder is 33.6 mg Pb/kg (dw). Soil ingestion was found by using titanium as a tracer, as titanium is abundant in soil, but not taken up in plants or animals. Low soil ingestion rates (<2%) were found in all investigated areas, including three shooting ranges and one cultivated pasture. There was no correlation between the copper concentration in soil and grass, such a correlation was found for lead. The risk of copper and lead poisoning by ruminants on shooting ranges was assessed based on the copper and lead concentration in the soil and grass, the soil ingestion rate and the grazing behavior. The risk assessment concluded that the calculated dose of copper (chronic sheep: 0.07, cattle: 0.08, acute sheep: 0.7, cattle: 0.8, mg/kg, body weight (bw), day) and lead (chronic sheep: 0.12, cattle: 0.12, acute sheep: 1.2, cattle: 1.2, mg/kg, bw, day) ingested by ruminants was much lower than both the assumed chronic (Cu sheep: 0.26-0.35 cattle: 8, Pb sheep and cattle:6, mg/kg, bw, day) and acute toxic doses (Cu sheep: 20-100, Pb sheep and cattle: 600-800, mg/kg bw) for sheep and cattle.
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Affiliation(s)
- Ida Vaa Johnsen
- Norwegian Defence Research Establishment (FFI), Instituttveien 20, NO-2007 Kjeller, Norway.
| | - Jorunn Aaneby
- Norwegian Defence Research Establishment (FFI), Instituttveien 20, NO-2007 Kjeller, Norway
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Abstract
Heavy metals are very toxic water pollutant. Their presence not only affect human beings but also animals and vegetation because of their mobility in aqueous ecosystem, toxicity and non-biodegradability [1].in the aim of removing heavy metals from aqueous solutions, an eco-friendly biosorbent was prepared from lagoon sludge by a humification process. The biosorption of Cd2+ and Al3+ ions from aqueous solutions was investigated as a function of initial pH,contact time, initial metal ions concentration, and temperature. Langmuir and Freundlich models were used to determine the sorption isotherm. Optimum pH for the removal of cadmium and aluminum was found respectively to be around 6 and 4 [2] . The equilibrium was obtained in 60 min with the pseudo-second-order kinetic model. The Langmuir model was a better fit with the experimental data for both cadmium and aluminum adsorption with a regression coefficient up to 0.99 and Qmax of 100 and 142 mg.g-1 respectively for Cd2+and Al3+.
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Zhao F, Yang L, Chen L, Li S, Sun L. Co-contamination of antibiotics and metals in peri-urban agricultural soils and source identification. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:34063-34075. [PMID: 30284161 DOI: 10.1007/s11356-018-3350-y] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2018] [Accepted: 09/26/2018] [Indexed: 06/08/2023]
Abstract
To identify the dominant sources of contamination in peri-urban land, this study investigated the concentrations and distributions of antibiotics and metals in agricultural soil of this area. An index of landscape development intensity (LDI) was used to characterize the distribution of human disturbance-related land use. The results showed that total antibiotic concentration in the soil reached 395.55 μg/kg and that chlortetracycline was the predominant antibiotic compound, with a relatively high mean concentration of 30.62 μg/kg. In soils, the mean concentrations of Cu, Zn, and Pb were 38.41, 127.88, and 56.61 mg/kg and those of Al, Fe, and K were 83.73, 24.17, and 23.42 g/kg, respectively. A redundancy analysis showed that the landscape pattern in a 300-m buffer zone can well explain the variation in the concentrations of antibiotics and metals (24%, p < 0.05). The LDI in the 300-m buffer zone significantly correlated with the concentrations of total antibiotics and total amounts of Cu and Zn in the soil, suggesting that the risk of soil contamination increases with the intensity of anthropogenic activities. A structural equation modeling analysis indicated that Al, Cu, and Zn could significantly aggravate accumulation of tetracycline antibiotics in the soil, whereas there were only significantly direct paths from Cu to ciprofloxacin and norfloxacin. Overall, the results showed that aggravated co-contamination of antibiotics and metals occurs in agricultural soil under intensive human disturbance.
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Affiliation(s)
- Fangkai Zhao
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Lei Yang
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China.
- University of Chinese Academy of Sciences, Beijing, 100049, China.
| | - Liding Chen
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Shoujuan Li
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Long Sun
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
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Spectral Responses of As and Pb Contamination in Tailings of a Hydrothermal Ore Deposit: A Case Study of Samgwang Mine, South Korea. REMOTE SENSING 2018. [DOI: 10.3390/rs10111830] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
We analyzed chemical composition, mineralogy, and spectral characteristics of the tailings of a hydrothermal gold mine in South Korea. We measured spectral responses of tailings to arsenic (As) and lead (Pb) concentration and developed and validated a prediction model for As and Pb in the tailings. The tailing was heavily contaminated with heavy metal elements and composed of rock forming minerals, gangue minerals and hydrothermal alteration minerals. The spectral features of the tailing were closely related to hydrothermal alteration minerals. The spectral responses associated with As and Pb concentrations were detected in shortwave infrared (SWIR) region at absorption positions of the hydrothermal alteration minerals. The prediction models were constructed using spectral bands of absorption features of the hydrothermal alteration minerals and were statistically significant. We found distinctive differences in spectral characteristics and spectral response to heavy metal contamination between the tailings and soils in the mining area. While the spectral signals to heavy metal concentration of tailings were associated with the hydrothermal alteration minerals, those of soils in mining area were manifested by clay minerals originated from weathering processes. This infers that geological processes associated with formation of soils and tailings are the major controlling factors of spectral responses to heavy metal contamination. This study provides a rare reference for the estimation of As and Pb concentration in the tailings with similar types of ore deposit and host rock.
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Schweizer SA, Seitz B, van der Heijden MGA, Schulin R, Tandy S. Impact of organic and conventional farming systems on wheat grain uptake and soil bioavailability of zinc and cadmium. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 639:608-616. [PMID: 29800854 DOI: 10.1016/j.scitotenv.2018.05.187] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2017] [Revised: 05/15/2018] [Accepted: 05/15/2018] [Indexed: 06/08/2023]
Affiliation(s)
- Steffen A Schweizer
- Soil Protection, Institute of Terrestrial Ecosystems, ETH Zürich, Universitätstrasse 16, 8092 Zurich, Switzerland; Soil Science, Department of Ecology and Ecosystem Management, Technical University of Munich, Emil-Ramann-Straße 2, 85354 Freising, Germany.
| | - Benjamin Seitz
- Plant-Soil Interactions, Agroscope, Reckenholzstrasse 191, 8046 Zurich, Switzerland; Environmental Geosciences, University of Basel, Bernoullistrasse 30, 4056 Basel, Switzerland.
| | - Marcel G A van der Heijden
- Plant-Soil Interactions, Agroscope, Reckenholzstrasse 191, 8046 Zurich, Switzerland; Department of Evolutionary Biology and Environmental Studies, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland; Plant-Microbe Interactions, Institute of Environmental Biology, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands.
| | - Rainer Schulin
- Soil Protection, Institute of Terrestrial Ecosystems, ETH Zürich, Universitätstrasse 16, 8092 Zurich, Switzerland.
| | - Susan Tandy
- Soil Protection, Institute of Terrestrial Ecosystems, ETH Zürich, Universitätstrasse 16, 8092 Zurich, Switzerland.
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He S, Li Y, Weng L, Wang J, He J, Liu Y, Zhang K, Wu Q, Zhang Y, Zhang Z. Competitive adsorption of Cd 2+, Pb 2+ and Ni 2+ onto Fe 3+-modified argillaceous limestone: Influence of pH, ionic strength and natural organic matters. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 637-638:69-78. [PMID: 29742476 DOI: 10.1016/j.scitotenv.2018.04.300] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Revised: 04/21/2018] [Accepted: 04/23/2018] [Indexed: 05/12/2023]
Abstract
In present study, the feasibility of applying a natural adsorbent with Fe3+ modification (Fe3+-modified argillaceous limestone, FAL) on the competitive adsorption of heavy metals (i.e., Cd2+, Pb2+ and Ni2+) was evaluated. The current results revealed an efficient adsorption on Cd2+, Pb2+ and Ni2+ in mono-metal system. Further experiments demonstrated a high selectivity of Pb2+ during the competitive adsorption of Cd2+, Pb2+ and Ni2+. The adsorption selectivity of the metal ions followed the order of Pb ≫ Cd > Ni. In addition, both pH and ionic strength are important factors affecting the metal adsorptions. It is interestingly that various NOMs (i.e., humic acid (HA) and glycine (Gly)) exerted different effects on the adsorption behaviors, probably due to the different affinities for Pb2+, Cd2+ and Ni2+ and the redistribution of newly-formed metal-DOM complexes. X-ray photoelectron spectroscopy (XPS) analysis together with X-ray diffraction (XRD) and energy dispersive spectrometer (EDS) analysis revealed that the metal adsorptions were mainly regulated via the synergistic mechanisms of ion exchange by Na+, Ca2+, and Al3+, precipitation to form CdCO3 and Pb2(OH)2(CO3)2, as well as complexes of FAL-OPb and FAL-ONi by hydroxyl groups on the surface of FAL. The application of FAL would be a promising option in leading to an efficient heavy metal removal.
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Affiliation(s)
- Shuran He
- College of Natural Resources and Environment, Joint Institute for Environmental Research & Education, South China Agricultural University, Guangzhou 510642, China
| | - Yongtao Li
- College of Natural Resources and Environment, Joint Institute for Environmental Research & Education, South China Agricultural University, Guangzhou 510642, China; Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin 300191, China.
| | - Liping Weng
- Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin 300191, China.
| | - Jinjin Wang
- College of Natural Resources and Environment, Joint Institute for Environmental Research & Education, South China Agricultural University, Guangzhou 510642, China.
| | - Jinxian He
- School of Resources and Geosciences, China University of Mining and Technology, Xuzhou 221116, China.
| | - Yonglin Liu
- College of Natural Resources and Environment, Joint Institute for Environmental Research & Education, South China Agricultural University, Guangzhou 510642, China
| | - Kun Zhang
- College of Natural Resources and Environment, Joint Institute for Environmental Research & Education, South China Agricultural University, Guangzhou 510642, China
| | - Qihong Wu
- College of Natural Resources and Environment, Joint Institute for Environmental Research & Education, South China Agricultural University, Guangzhou 510642, China
| | - Yulong Zhang
- College of Natural Resources and Environment, Joint Institute for Environmental Research & Education, South China Agricultural University, Guangzhou 510642, China.
| | - Zhen Zhang
- College of Natural Resources and Environment, Joint Institute for Environmental Research & Education, South China Agricultural University, Guangzhou 510642, China.
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Woszczyk M, Spychalski W, Boluspaeva L. Trace metal (Cd, Cu, Pb, Zn) fractionation in urban-industrial soils of Ust-Kamenogorsk (Oskemen), Kazakhstan-implications for the assessment of environmental quality. ENVIRONMENTAL MONITORING AND ASSESSMENT 2018; 190:362. [PMID: 29802453 PMCID: PMC5970153 DOI: 10.1007/s10661-018-6733-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Accepted: 05/16/2018] [Indexed: 05/15/2023]
Abstract
Ust-Kamenogorsk is one of the largest cities and industrial centers in Kazakhstan. Non-ferrous metallurgy (Zn-Pb smelter) has acted as a predominating industrial branch in the city since late 1940s. The industrial plants are situated directly adjacent to the residential area of the city which creates grievous ecotoxicological hazard. In the present paper, we aimed at assessing the trace metal pollution of top soils in Ust-Kamenogorsk and its potential threats to the local population. The top soils were sampled at 10 sites throughout the city center. We determined the physical and chemical properties of soils as well as the contents of Cd, Cu, Pb, and Zn. In addition, the soil samples were subjected to a five-step sequential extraction to ascertain the fractionation of trace metals. On this basis, we calculated the geoaccumulation index (Igeo) and pollution load index (PLI) and assessed bioavailability of the elements. From our data, it emerged that the soils displayed a strong polymetallic pollution. PLI was as high as 33.4. Throughout the city, the trace metal contents exceeded the geochemical background and allowable values for residential, recreational, and institutional areas. The Igeo obtained were 3.7-6.5 for Cd, 1.5-4.7 for Cu, 2.8-5.7 for Pb, and 2.6-4.6 for Zn. The soils in Ust-Kamenogorsk displayed extremely high contamination with Cd, moderate to strong contamination with Pb and Zn, and low to moderate contamination with Cu. Cd and Pb were found to be the most bioavailable elements. The mobility of trace metals in the soils changed in the order Cd > Pb > Zn > Cu.
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Affiliation(s)
- Michał Woszczyk
- Department of Quarternary Geology and Paleogeography, Adam Mickiewicz University, B. Krygowskiego 10, 61-680, Poznań, Poland.
| | - Waldemar Spychalski
- Department of Soil Science, Poznań University of Life Sciences, Szydłowska 50, 60-656, Poznań, Poland
| | - Laura Boluspaeva
- Department of Ecology and Geography, Sarsen Amanzholov East Kazakhstan State University, Revolution street 2a, Ust-Kamenogorsk, Kazakhstan
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Occurrence and Removal of Copper and Aluminum in a Stream Confluence Affected by Acid Mine Drainage. WATER 2018. [DOI: 10.3390/w10040516] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Dos Santos LMR, Gloaguen TV, Fadigas FDS, Chaves JM, Martins TMO. Metal accumulation in soils derived from volcano-sedimentary rocks, Rio Itapicuru Greenstone Belt, northeastern Brazil. THE SCIENCE OF THE TOTAL ENVIRONMENT 2017; 601-602:1762-1774. [PMID: 28618665 DOI: 10.1016/j.scitotenv.2017.06.035] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2017] [Revised: 06/04/2017] [Accepted: 06/05/2017] [Indexed: 06/07/2023]
Abstract
Many countries and some Brazilian regions have defined the guideline values for metals in soils. However, the local geological features may be so heterogeneous that global or even regional guideline values cannot be applied. The Greenstone Belts are worldwide geological formations of vast extension, containing mineralization of various metals (e.g., Au, Cr, Ni, and Ag). Natural concentrations of soils must be known to correctly assess the impact of mining. We studied the soils of the Rio Itapicuru Greenstone Belt (RIGB), of Paleoproterozoic age, sampling at 24 sites (0-0.20m) in the areas not or minimally human impacted, equally distributed in the three units of the RIGB: Volcanic Mafic Unit (VMU), Volcanic Felsic Unit (VFU), and Volcano-clastic Sedimentary Unit (SU). The natural pseudo-total concentrations of Cr, Ni, Cu, Zn, Pb, Fe, and Mn were obtained by acid digestion (EPA3050b) both in the soil and the particle-size fractions (sand and clay+silt). The concentrations of metals in RIGB soils, especially Cr and Ni, are generally higher than those reported for other regions of Brazil or other countries. Even the sedimentary soils have relatively high metal values, naturally contaminated by the VMU of the RIGB; a potential impact on Mesozoic and Cenozoic sedimentary rocks located near the study region is highly expected. Metals are concentrated (80%) in the fine particle-size fraction, implying an easy availability through surface transport (wind and runoff). We introduced a new index, called the Fe-independent accumulation factor - AF-Fe, which reveals that 90-98% of the dynamics of the trace metals is associated with the iron geochemical cycle. We primarily conclude that determining the guideline values for different soil classes in variable geological/geochemical environment and under semiarid climate is meaningless: the concentration of metals in soils is clearly more related to the source material than to the pedogenesis processes.
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González-Costa JJ, Reigosa MJ, Matías JM, Fernández-Covelo E. Analysis of the Importance of Oxides and Clays in Cd, Cr, Cu, Ni, Pb and Zn Adsorption and Retention with Regression Trees. PLoS One 2017; 12:e0168523. [PMID: 28072849 PMCID: PMC5224874 DOI: 10.1371/journal.pone.0168523] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2016] [Accepted: 12/03/2016] [Indexed: 11/18/2022] Open
Abstract
This study determines the influence of the different soil components and of the cation-exchange capacity on the adsorption and retention of different heavy metals: cadmium, chromium, copper, nickel, lead and zinc. In order to do so, regression models were created through decision trees and the importance of soil components was assessed. Used variables were: humified organic matter, specific cation-exchange capacity, percentages of sand and silt, proportions of Mn, Fe and Al oxides and hematite, and the proportion of quartz, plagioclase and mica, and the proportions of the different clays: kaolinite, vermiculite, gibbsite and chlorite. The most important components in the obtained models were vermiculite and gibbsite, especially for the adsorption of cadmium and zinc, while clays were less relevant. Oxides are less important than clays, especially for the adsorption of chromium and lead and the retention of chromium, copper and lead.
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Affiliation(s)
| | | | - José María Matías
- Department of Statistics and Operational Research, Universidad de Vigo. Vigo, Spain
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Zaki A, Ahmad M, El-Rahman KA. Sorption characteristics of a landfill clay soil as a retardation barrier of some heavy metals. APPLIED CLAY SCIENCE 2017; 135:150-167. [DOI: 10.1016/j.clay.2016.09.016] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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Zhai Y, Liu X, Zhu Y, Peng C, Wang T, Zhu L, Li C, Zeng G. Hydrothermal carbonization of sewage sludge: The effect of feed-water pH on fate and risk of heavy metals in hydrochars. BIORESOURCE TECHNOLOGY 2016; 218:183-8. [PMID: 27367814 DOI: 10.1016/j.biortech.2016.06.085] [Citation(s) in RCA: 67] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2016] [Revised: 06/20/2016] [Accepted: 06/22/2016] [Indexed: 05/12/2023]
Abstract
In this study, the effect of feed-water pH (pH=2-12) on fate and risk of heavy metals (HMs) in hydrochars (HCs) was investigated. Hydrothermal carbonization (HTC) of sewage sludge (SS) was carried out with different feed-water pH at 270°C. The research results showed that changing feed-water pH had a positive effect on accumulating Pb, Ni, Cd and Zn in HCs. Chemical forms of Cu and Cr converted from an unstable state to stable in the alkaline environment while in the acidic condition was opposite. The effect of feed-water pH on the chemical forms of HMs was variable but not significant. Risk assessments of Igeo, Er(i), RAC and RI were applied to evaluate the accumulation levels of individual metal, the potential ecological risks, the bio-availabilities and the comprehensive toxicity and sensitivity of HMs, respectively. The lowest pollution level of HMs was obtained at 270°C with pH=11.
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Affiliation(s)
- Yunbo Zhai
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China.
| | - Xiangmin Liu
- 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
| | - Yun Zhu
- Office of Scientific R&D, Hunan University, Changsha 410082, PR China
| | - Chuan Peng
- 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
| | - Tengfei 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
| | - Luo Zhu
- 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
| | - Caiting Li
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China
| | - 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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Babcsányi I, Chabaux F, Granet M, Meite F, Payraudeau S, Duplay J, Imfeld G. Copper in soil fractions and runoff in a vineyard catchment: Insights from copper stable isotopes. THE SCIENCE OF THE TOTAL ENVIRONMENT 2016; 557-558:154-62. [PMID: 26994803 DOI: 10.1016/j.scitotenv.2016.03.037] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2015] [Revised: 02/26/2016] [Accepted: 03/07/2016] [Indexed: 05/15/2023]
Abstract
Understanding the fate of copper (Cu) fungicides in vineyard soils and catchments is a prerequisite to limit the off-site impact of Cu. Using Cu stable isotopes, Cu retention in soils and runoff transport was investigated in relation to the use of Cu fungicides and the hydrological conditions in a vineyard catchment (Rouffach, Haut-Rhin, France; mean slope: 15%). The δ(65)Cu values of the bulk vineyard soil varied moderately through the depth of the soil profiles (-0.12 to 0.24‰±0.08‰). The values were in the range of those of the fungicides (-0.21 to 0.11‰) and included the geogenic δ(65)Cu value of the untreated soil (0.08‰). However, δ(65)Cu values significantly differed between particle-size soil fractions (-0.37±0.10‰ in fine clays and 0.23±0.07‰ in silt). Together with the soil mineralogy, the results suggested Cu isotope fractionation primarily associated with the clay and fine clay fractions that include both SOM and mineral phases. The vegetation did not affect the Cu isotope patterns in the vineyard soils. Cu export by runoff from the catchment accounted for 1% of the applied Cu mass from 11th May to 20(th) July 2011, covering most of the Cu use period. 84% of the exported Cu mass was Cu bound to suspended particulate matter (SPM). The runoff displayed δ(65)Cu values from 0.52 to 1.35‰ in the dissolved phase (<0.45μm) compared to -0.34 to -0.02‰ in the SPM phase, indicating that clay and fine clay fractions were the main vectors of SPM-bound Cu in runoff. Overall, this study shows that Cu stable isotopes may allow identifying the Cu distribution in the soil fractions and their contribution to Cu export in runoff from Cu-contaminated catchments.
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Affiliation(s)
- Izabella Babcsányi
- Laboratoire d'Hydrologie et de Géochimie de Strasbourg (LHyGeS), Université de Strasbourg/EOST, CNRS, 1 rue Blessig, 67084 Strasbourg Cedex, France
| | - François Chabaux
- Laboratoire d'Hydrologie et de Géochimie de Strasbourg (LHyGeS), Université de Strasbourg/EOST, CNRS, 1 rue Blessig, 67084 Strasbourg Cedex, France
| | - Mathieu Granet
- Laboratoire d'Hydrologie et de Géochimie de Strasbourg (LHyGeS), Université de Strasbourg/EOST, CNRS, 1 rue Blessig, 67084 Strasbourg Cedex, France
| | - Fatima Meite
- Laboratoire d'Hydrologie et de Géochimie de Strasbourg (LHyGeS), Université de Strasbourg/EOST, CNRS, 1 rue Blessig, 67084 Strasbourg Cedex, France
| | - Sylvain Payraudeau
- Laboratoire d'Hydrologie et de Géochimie de Strasbourg (LHyGeS), Université de Strasbourg/EOST, CNRS, 1 rue Blessig, 67084 Strasbourg Cedex, France
| | - Joëlle Duplay
- Laboratoire d'Hydrologie et de Géochimie de Strasbourg (LHyGeS), Université de Strasbourg/EOST, CNRS, 1 rue Blessig, 67084 Strasbourg Cedex, France
| | - Gwenaël Imfeld
- Laboratoire d'Hydrologie et de Géochimie de Strasbourg (LHyGeS), Université de Strasbourg/EOST, CNRS, 1 rue Blessig, 67084 Strasbourg Cedex, France.
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Liang S, Guan DX, Li J, Zhou CY, Luo J, Ma LQ. Effect of aging on bioaccessibility of arsenic and lead in soils. CHEMOSPHERE 2016; 151:94-100. [PMID: 26930247 DOI: 10.1016/j.chemosphere.2016.02.070] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2015] [Revised: 02/01/2016] [Accepted: 02/16/2016] [Indexed: 06/05/2023]
Abstract
The effect of aging on the bioaccessibility of As and Pb in three soils spiked with As (40 or 400 mg kg(-1)), Pb (150 or 1500 mg kg(-1)) or As + Pb (40 mg kg(-1) As and 150 mg kg(-1) Pb) were investigated using the physiologically based extraction test (PBET). Prolonged aging in soils resulted in a decrease in As/Pb bioaccessibility, especially within the first month. After 76 weeks, As/Pb bioaccessibility in soils decreased to a stable level, with 48-84% and 8-34% for bioaccessible As and Pb respectively in the intestinal phase, illustrating that As in spiked soils was much more bioaccessible than Pb. Correlation analysis between sequential extraction data and PBET results showed that the non-specifically sorbed As contributed the most to bioaccessible As, while Pb bound with carbonates and exchangeable fractions were the source for bioaccessible Pb. For future work, minerals containing As and/or Pb instead of their soluble salts can be added to uncontaminated soils to better simulate the natural aging processes.
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Affiliation(s)
- Shuang Liang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Jiangsu 210023, China; Central and Southern China Municipal Engineering Design & Research Institute, Wuhan, Hubei 430010, China
| | - Dong-Xing Guan
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Jiangsu 210023, China
| | - Jie Li
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Jiangsu 210023, China
| | - Chun-Yang Zhou
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Jiangsu 210023, China
| | - Jun Luo
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Jiangsu 210023, China.
| | - Lena Q Ma
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Jiangsu 210023, China; Soil and Water Science Department, University of Florida, Gainesville, FL 32611, United States.
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Safari Y, Delavar MA, Zhang C, Esfandiarpour-Boroujeni I, Owliaie HR. The influences of selected soil properties on Pb availability and its transfer to wheat (Triticum aestivum L.) in a polluted calcareous soil. ENVIRONMENTAL MONITORING AND ASSESSMENT 2015; 187:773. [PMID: 26612564 DOI: 10.1007/s10661-015-5001-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2015] [Accepted: 11/20/2015] [Indexed: 06/05/2023]
Abstract
Accumulated anthropogenic heavy metals in the surface layer of agricultural soils may be transferred through the food chain via plant uptake processes. The objectives of this study were to assess the spatial distribution of lead (Pb) in the soils and wheat plants and to determine the soil properties which may affect the Pb transferring from soil to wheat plants in Zanjan Zinc Town area, northwestern Iran. A total of 110 topsoil samples (0-20 cm) were systematically collected from an agricultural area near a large metallurgical factory for the analyses of physico-chemical properties and total and bioavailable Pb concentrations. Furthermore, a total of 65 wheat samples collected at the same soil sampling locations were analyzed for Pb concentration in different plant parts. The results showed that elevated Pb concentrations were mostly found in soils located surrounding the industrial source of pollution. The bioavailable Pb concentration in the studied soils was up to 128.4 mg kg(-1), which was relatively high considering the observed soil alkalinity. 24.6% of the wheat grain samples exceeded the FAO/WHO maximum permitted concentration of Pb in wheat grain (0.2 mg kg(-1)). Correlation analyses revealed that soil organic matter, soil pH, and clay content showed insignificant correlation with Pb concentration in the soil and wheat grains, whereas calcium carbonate content showed significantly negative correlations with both total and bioavailable Pb in the soil, and Pb content in wheat grains, demonstrating the strong influences of calcium carbonate on Pb bioavailability in the polluted calcareous soils.
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Affiliation(s)
- Yaser Safari
- Department of Soil Sciences, College of Agriculture, University of Zanjan, Zanjan, Iran.
| | - Mohammad-Amir Delavar
- Department of Soil Sciences, College of Agriculture, University of Zanjan, Zanjan, Iran.
| | - Chaosheng Zhang
- School of Geography and Archaeology, National University of Ireland, Galway, Ireland.
| | | | - Hamid-Reza Owliaie
- Department of Soil Sciences, College of Agriculture, Yasouj University, Yasouj, Iran.
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Perlatti F, Otero XL, Macias F, Ferreira TO. Geochemical speciation and dynamic of copper in tropical semi-arid soils exposed to metal-bearing mine wastes. THE SCIENCE OF THE TOTAL ENVIRONMENT 2014; 500-501:91-102. [PMID: 25217748 DOI: 10.1016/j.scitotenv.2014.08.086] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2014] [Revised: 08/15/2014] [Accepted: 08/23/2014] [Indexed: 06/03/2023]
Abstract
The potentially hazardous effects of rock wastes disposed at open pit in three different areas (Pr: Ore processing; Wr: Waste rock and Bd: Border) of an abandoned copper mine were evaluated in this study, with emphasis on acid drainage generation, metal contamination and copper geochemical dynamics in soils. Samples of waste rock were analyzed by Energy dispersive X-ray fluorescence (XRF), scanning electron microscopy with microanalysis (SEM-EDS) and X-ray diffraction (XRD). Soil samples were analyzed to determine the total metal contents (XRF), mineralogy (XRD), pH (H2O and H2O2), organic and inorganic carbon, % of total N, S and P, particle size, and a sequential extraction procedure was used to identify the different copper fractions. As a result of the prevalence of carbonates over sulphides in the wastes, the soil pH remained close to neutral, with absence of acid mine drainage. The geochemical interaction between these mineral phases seems to be the main mechanism to release Cu(2)(+) ions. Total Cu in soils from the Pr area reached 11,180mg.kg(-1), while in Wr and Bd areas the values reached, on average, 4683 and 1086mg.kg(-1), respectively, indicating a very high level of soil contamination. In the Pr and Wr, the Cu was mainly associated with carbonates and amorphous iron oxides. In the Bd areas, the presence of vegetation has influenced the geochemical behavior of copper by increasing the dissolution of carbonates, affecting the buffer capacity of soils against sulphide oxidation, reducing the pH levels and enhancing the proportion of exchangeable and organic bound Cu. The present findings show that the use of plants or organic amendments in mine sites with high concentration of Cu carbonate-containing wastes should be viewed with caution, as the practice may enhance the mobilization of copper to the environment due to an increase in the rate of carbonates dissolution.
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Affiliation(s)
- Fabio Perlatti
- Department of Environmental Technology, National Department of Mineral Production - DNPM, Rua Dr. José Lourenço, 90560115-280 Fortaleza, CE, Brazil; Graduate Course of Ecology and Natural Resources, Department of Biology, Federal University of Ceará - UFC, Building 906, 60455-760, Fortaleza, CE, Brazil
| | - Xosé Luis Otero
- Department of Edaphology and Agricultural Chemistry, Faculty of Biology, University of Santiago de Compostela - USC, Rúa Lope Gómez de Marzoa, s/n. Campus sur, 15782 Santiago de Compostela, Spain
| | - Felipe Macias
- Department of Edaphology and Agricultural Chemistry, Faculty of Biology, University of Santiago de Compostela - USC, Rúa Lope Gómez de Marzoa, s/n. Campus sur, 15782 Santiago de Compostela, Spain
| | - Tiago Osório Ferreira
- Department of Soil Science, University of São Paulo (ESALQ/USP), Av. Pádua Dias, 11, 13418-900, Piracicaba, SP, Brazil; Graduate Course of Ecology and Natural Resources, Department of Biology, Federal University of Ceará - UFC, Building 906, 60455-760, Fortaleza, CE, Brazil.
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Sipos P, Németh T, Choi C, Szalai Z, Balázs R. Distribution, geochemical fractionation and sorption of Cu and Pb in soils characteristic of Hungary. ACTA ACUST UNITED AC 2014. [DOI: 10.1556/ceugeol.57.2014.3.3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Garrido-Rodriguez B, Cutillas-Barreiro L, Fernández-Calviño D, Arias-Estévez M, Fernández-Sanjurjo MJ, Álvarez-Rodríguez E, Núñez-Delgado A. Competitive adsorption and transport of Cd, Cu, Ni and Zn in a mine soil amended with mussel shell. CHEMOSPHERE 2014; 107:379-385. [PMID: 24468110 DOI: 10.1016/j.chemosphere.2013.12.097] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2013] [Revised: 12/16/2013] [Accepted: 12/28/2013] [Indexed: 06/03/2023]
Abstract
Batch type and column experiments were used to study competitive adsorption-desorption and transport for Cd, Cu, Ni and Zn in a mine soil, both un-amended and amended with mussel shell. Batch type experiments showed that adsorption was affected by the added concentration of the metals, generally following the sequence Cu>Zn>Cd≈Ni. Metal desorbed was a function of the dose of metal added, as well as of the dose of shell amendment, being relevant that even when the highest dose of metal (2300 μM) was added, the 24 g kg(-1) shell amendment caused a drastic diminution in the amount of metal desorbed. Column experiments showed that even the lowest dose of the shell amendment (6 g kg(-1)) caused a strong retention of the 4 heavy metals assayed, whereas using the 24 g kg(-1) shell amendment no metal was detected in the effluent during the time of the experiment. The mass of metal retained in the un-amended soil was very different for the various metals assayed, but the amendment with 6 g kg(-1) shell increased this retention in all cases, and the 24 g kg(-1) amendment caused almost 100% retention for all 4 metals. The retardation factor (R) suffered an overall increase as a function of the shell dose; the profile distribution of the 4 heavy metals was homogeneous through the un-amended soil into the column, but the shell amendment clearly decreased the solute transport affecting these metals, causing its concentration in the first centimeters of the soil profile.
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Affiliation(s)
- Beatriz Garrido-Rodriguez
- Area de Edafoloxía e Química Agrícola, Departamento de Bioloxía Vexetal e Ciencia do Solo, Univ. Vigo, Facultade de Ciencias, 32004 Ourense, Spain
| | - Laura Cutillas-Barreiro
- Area de Edafoloxía e Química Agrícola, Departamento de Bioloxía Vexetal e Ciencia do Solo, Univ. Vigo, Facultade de Ciencias, 32004 Ourense, Spain
| | - David Fernández-Calviño
- Area de Edafoloxía e Química Agrícola, Departamento de Bioloxía Vexetal e Ciencia do Solo, Univ. Vigo, Facultade de Ciencias, 32004 Ourense, Spain
| | - Manuel Arias-Estévez
- Area de Edafoloxía e Química Agrícola, Departamento de Bioloxía Vexetal e Ciencia do Solo, Univ. Vigo, Facultade de Ciencias, 32004 Ourense, Spain.
| | - María J Fernández-Sanjurjo
- Departamento de Edafoloxía e Química Agrícola, Univ. Santiago de Compostela, Escola Politécnica Superior, Campus Univ. s/n, 27002 Lugo, Spain
| | - Esperanza Álvarez-Rodríguez
- Departamento de Edafoloxía e Química Agrícola, Univ. Santiago de Compostela, Escola Politécnica Superior, Campus Univ. s/n, 27002 Lugo, Spain
| | - Avelino Núñez-Delgado
- Departamento de Edafoloxía e Química Agrícola, Univ. Santiago de Compostela, Escola Politécnica Superior, Campus Univ. s/n, 27002 Lugo, Spain
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Liang S, Guan DX, Ren JH, Zhang M, Luo J, Ma LQ. Effect of aging on arsenic and lead fractionation and availability in soils: coupling sequential extractions with diffusive gradients in thin-films technique. JOURNAL OF HAZARDOUS MATERIALS 2014; 273:272-279. [PMID: 24751493 DOI: 10.1016/j.jhazmat.2014.03.024] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2014] [Accepted: 03/19/2014] [Indexed: 06/03/2023]
Abstract
We coupled the diffusive gradients in thin-films (DGT) technique with two sequential extraction methods to investigate the influence of aging on As and Pb fractionation and availability in three soils spiked with As (40 or 400mgkg(-1)), Pb (150 or 1500mgkg(-1)) or As+Pb (40mgkg(-1) As and 150mgkg(-1) Pb). During aging, As moved from the more available (non-specifically and specifically sorbed) to less available (amorphous and crystallized Fe/Al) fractions while Pb moved from the first three fractions (exchangeable, carbonate and Fe/Mn hydroxide) to organic fraction. However, even after 33-week aging, much more As and Pb were in the least available residual fraction in spiked soils than native soils (11-59% vs. 1.2-12%). Relatively, As in spiked soils was much more available than Pb with 11-14% As and 46-59% Pb in the residual fraction. Correlation analysis indicated that As in the non-specifically and specifically sorbed fractions and Pb in the exchangeable fraction were likely sources of DGT-measured labile As and Pb. The fact that As and Pb distribution and availability in spiked soils were significantly different from native soils suggests caution needs to be exercised when using spiked soils for research.
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Affiliation(s)
- Shuang Liang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Jiangsu 210023, China
| | - Dong-Xing Guan
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Jiangsu 210023, China
| | - Jing-Hua Ren
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Jiangsu 210023, China
| | - Min Zhang
- College of Resources and Environment, Shandong Agricultural University, Shangdong 271018, China
| | - Jun Luo
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Jiangsu 210023, China.
| | - Lena Q Ma
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Jiangsu 210023, China; Soil and Water Science Department, University of Florida, Gainesville, FL 32611, USA.
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Balint R, Nechifor G, Ajmone-Marsan F. Leaching potential of metallic elements from contaminated soils under anoxia. ENVIRONMENTAL SCIENCE. PROCESSES & IMPACTS 2014; 16:211-9. [PMID: 24365993 DOI: 10.1039/c3em00546a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Understanding metallic element (ME) behaviour in soils subjected to alternating redox conditions is of significant environmental importance, particularly for contaminated soils. Although variations in the hydrological status of soils may lead to the release of ME, redox-driven changes in ME dynamics are still not sufficiently understood. We studied the effects of alternating redox cycles on the release, leaching and redistribution of Zn, Cu and Pb in metal mine-contaminated and non-contaminated soils by means of a column experiment. Although the release of Zn was promoted by the onset of reductive conditions, successive redox cycles favoured metal partitioning in less labile fractions limiting its further mobilization. The release of Cu in soil pore waters and redistribution in the solid phase towards more labile pools were strongly dependent on the alternation between oxidizing and reducing conditions. In contaminated soils, the presence of chalcopyrite could have determined the release of Cu under oxic conditions and its relative immobilization under subsequent anoxic conditions. The behaviour of Pb did not seem to be influenced by the redox status, although higher concentrations in the column leachates with respect to soil pore waters suggested that alternating redox conditions could nonetheless result in substantial mobilization. This study provides evidence that the alternation of soil redox conditions may play a more important role in determining the release and leaching of ME from soils with respect to reducing or oxidizing conditions considered separately.
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Affiliation(s)
- Ramona Balint
- Department of Analytical Chemistry and Environmental Engineering, Politehnica University of Bucharest, 011061, Bucharest, Romania
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Guney Y, Cetin B, Aydilek AH, Tanyu BF, Koparal S. Utilization of sepiolite materials as a bottom liner material in solid waste landfills. WASTE MANAGEMENT (NEW YORK, N.Y.) 2014; 34:112-124. [PMID: 24220149 DOI: 10.1016/j.wasman.2013.10.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2012] [Revised: 10/05/2013] [Accepted: 10/09/2013] [Indexed: 06/02/2023]
Abstract
Landfill bottom liners are generally constructed with natural clay soils due to their high strength and low hydraulic conductivity characteristics. However, in recent years it is increasingly difficult to find locally available clay soils that satisfy the required engineering properties. Fine grained soils such as sepiolite and zeolite may be used as alternative materials in the constructions of landfill bottom liners. A study was conducted to investigate the feasibility of using natural clay rich in kaolinite, sepiolite, zeolite, and their mixtures as a bottom liner material. Unconfined compression tests, swell tests, hydraulic conductivity tests, batch and column adsorption tests were performed on each type of soil and sepiolite-zeolite mixtures. The results of the current study indicate that sepiolite is the dominant material that affects both the geomechanical and geoenvironmental properties of these alternative liners. An increase in sepiolite content in the sepiolite-zeolite mixtures increased the strength, swelling potential and metal adsorption capacities of the soil mixtures. Moreover, hydraulic conductivity of the mixtures decreased significantly with the addition of sepiolite. The utilization of sepiolite-zeolite materials as a bottom liner material allowed for thinner liners with some reduction in construction costs compared to use of a kaolinite-rich clay.
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Affiliation(s)
- Yucel Guney
- Department of Civil Engineering, 2 Eylul Campus, Anadolu University, Eskisehir 26480, Turkey.
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Jalali M, Moradi F. Competitive sorption of Cd, Cu, Mn, Ni, Pb and Zn in polluted and unpolluted calcareous soils. ENVIRONMENTAL MONITORING AND ASSESSMENT 2013; 185:8831-8846. [PMID: 23677680 DOI: 10.1007/s10661-013-3216-1] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2012] [Accepted: 04/10/2013] [Indexed: 06/02/2023]
Abstract
The objectives of this study were to investigate competitive sorption behaviour of heavy metals (Cd, Cu, Mn, Ni, Pb and Zn) under different management practices and identify soil characteristics that can be correlated with the retention and mobility of heavy metals using 65 calcareous soil samples. The lowest sorption was found for Mn and Ni in competition with the other metals, indicating the high mobility of these two cations. The Freundlich equation adequately described heavy metals adsorption. On the basis of Freundlich distribution coefficient, the selectivity sequence of the metal adsorption was Cu > Pb > Cd > Zn > Ni > Mn. The mean value of the joint distribution coefficient (K dΣsp) was 182.1, 364.1, 414.7, 250.1, 277.7, 459.9 and 344.8 l kg(-1) for garden, garlic, pasture, potato, vegetables, wheat and polluted soils, respectively. The lowest observed K dΣsp in garden soil samples was due to the lower cation exchange capacity and lower carbonate content. The results of the geochemical modelling under low and high metal addition indicated that Cd, Ni, Mn and Zn were mainly retained via adsorption, while Pb and Cu were retained via adsorption and precipitation. Stepwise forward regression analysis showed that clay, organic matter and CaCO3 were the most important soil properties influencing competitive adsorption of Cd, Mn, Ni and Zn. The results in this study point to a relatively easy way to estimate distribution coefficient values.
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Affiliation(s)
- Mohsen Jalali
- Department of Soil Science, College of Agriculture, Bu-Ali Sina University, Hamedan, Iran,
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de Santiago-Martín A, Valverde-Asenjo I, Quintana JR, Vázquez A, Lafuente AL, González-Huecas C. Metal extractability patterns to evaluate (potentially) mobile fractions in periurban calcareous agricultural soils in the Mediterranean area-analytical and mineralogical approaches. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2013; 20:6392-6405. [PMID: 23589262 DOI: 10.1007/s11356-013-1684-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2012] [Accepted: 03/26/2013] [Indexed: 06/02/2023]
Abstract
A set of periurban calcareous agricultural Mediterranean soils was spiked with a mixture of Cd, Cu, Pb and Zn at two levels within the limit values proposed by current European legislation, incubated for up to 12 months, and subjected to various one-step extraction procedures to estimate mobile (neutral salts) and potentially mobile metal fractions (complexing and acidic extraction methods). The results obtained were used to study metal extractability patterns according to the soil characteristics. The analytical data were coupled with mineralogical investigations and speciation modelling using the Visual Minteq model. The formation of soluble metal-complexes in the complexing extracts (predicted by the Visual Minteq calculations) led to the highest extraction efficiency with complexing extractants. Metal extractability patterns were related to both content and composition of carbonate, organic matter, Fe oxide and clay fractions. Potentially mobile metal fractions were mainly affected by the finest soil fractions (recalcitrant organic matter, active lime and clay minerals). In the case of Pb, scarce correlations between extractable Pb and soil constituents were obtained which was attributed to high Pb retention due to the formation of 4PbCO3·3PbO (corroborated by X-ray diffraction). In summary, the high metal proportion extracted with complexing agents highlighted the high but finite capacity to store potentially mobilizable metals and the possible vulnerability of these soils against environmental impact from metal accumulation.
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Affiliation(s)
- Ana de Santiago-Martín
- Departamento de Edafología, Facultad de Farmacia, Universidad Complutense de Madrid, Plaza Ramón y Cajal s/n, 28040, Madrid, Spain.
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