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Yang Y, Huang Y, Liu Y, Jiao G, Dai H, Liu X, Hughes SS. The migration and transformation mechanism of vanadium in a soil-pore water-maize system. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 913:169563. [PMID: 38145672 DOI: 10.1016/j.scitotenv.2023.169563] [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: 08/13/2023] [Revised: 12/05/2023] [Accepted: 12/19/2023] [Indexed: 12/27/2023]
Abstract
The migration mechanism of vanadium (V) in the soil-pore water-maize system has not been revealed. This study conducted pot experiments under artificial control conditions to reveal V's distribution and transport mechanism under different growth stages and V content gradient stress. The V content in the soil pore water gradually increased by an order of magnitude. The V content of pore water in the no-plant group was higher than that in the plant group, indicating that the maize roots absorbed V. The V exists in the form of pentavalent oxygen anions, in which H2VO4- occupies the most significant proportion. With increasing V content, the root area, root number, root length, and tip number decreased significantly. The malondialdehyde content in maize leaves showed an increasing trend, indicating the degree of lipid peroxidation was gradually enhanced. The V content was in the order of root > leaf > stem > fruit and maturity stage > flowering stage > jointing stage, respectively. The transfer coefficient reached a maximum under natural conditions, and increased gradually with the growth. The results of synchrotron radiation X-ray absorption near edge structure (XANES) analysis showed that Fe in maize roots mainly comprised of Fe2O3 and Fe3O4. The Fe in the soil is primarily existed in lepidocrocite and Fe2O3. The μ-XRF analysis showed that V and Fe enriched in the roots with a positive relationship, indicating the synergistic absorption of V and Fe by roots. Part of the Fe2+ reduced V5+ to V4+ or V3+ in the forms of VO2+, V(OH)2+, or V(OH)3 (s), and fixed V at the root. Soil weak acid-soluble fraction V and soil total V were vital factors to maize extraction. This study provides new insights into V biogeochemical behavior and a scientific basis for correctly evaluating its ecological and human health risks.
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Affiliation(s)
- Ying Yang
- State Key Laboratory of Collaborative Control and Joint Remediation of Soil and Water Pollution, College of Ecology and Environment, Chengdu University of Technology, Chengdu, Sichuan 610059, China
| | - Yi Huang
- State Key Laboratory of Collaborative Control and Joint Remediation of Soil and Water Pollution, College of Ecology and Environment, Chengdu University of Technology, Chengdu, Sichuan 610059, China; State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, College of Geosciences, Chengdu University of Technology, Chengdu, Sichuan 610059, China.
| | - Yunhe Liu
- State Key Laboratory of Collaborative Control and Joint Remediation of Soil and Water Pollution, College of Ecology and Environment, Chengdu University of Technology, Chengdu, Sichuan 610059, China
| | - Ganghui Jiao
- State Key Laboratory of Collaborative Control and Joint Remediation of Soil and Water Pollution, College of Ecology and Environment, Chengdu University of Technology, Chengdu, Sichuan 610059, China
| | - Hao Dai
- State Key Laboratory of Collaborative Control and Joint Remediation of Soil and Water Pollution, College of Ecology and Environment, Chengdu University of Technology, Chengdu, Sichuan 610059, China
| | - Xiaowen Liu
- Center of Deep-Sea Research, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
| | - Scott S Hughes
- Department of Geosciences, Idaho State University, Pocatello, ID 83209, USA
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2
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He J, Zhang B, Yan W, Lai Y, Tang Y, Han Y, Liu J. Deciphering Vanadium Speciation in Smelting Ash and Adaptive Responses of Soil Microorganisms. ACS NANO 2024; 18:2464-2474. [PMID: 38197778 DOI: 10.1021/acsnano.3c11204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2024]
Abstract
Abundant smelting ash is discharged during pyrometallurgical vanadium (V) production. However, its associated V speciation and resultant ecological impact have remained elusive. In this study, V speciation in smelting ash and its influence on the metabolism of soil microorganisms were investigated. Smelting ashes from V smelters contained abundant V (19.6-115.9 mg/g). V(V) was the dominant species for soluble V, while solid V primarily existed in bioavailable forms. Previously unrevealed V nanoparticles (V-NPs) were prevalently detected, with a peak concentration of 1.3 × 1013 particles/g, a minimal size of 136.0 ± 0.6 nm, and primary constituents comprising FeVO4, VO2, and V2O5. Incubation experiments implied that smelting ash reshaped the soil microbial community. Metagenomic binning, gene transcription, and component quantification revealed that Microbacterium sp. and Tabrizicola sp. secreted extracellular polymeric substances through epsB and yhxB gene regulation for V-NPs aggregation to alleviate toxicity under aerobic operations. The V K-edge X-ray absorption near-edge structure (XANES) spectra suggested that VO2 NPs were oxidized to V2O5 NPs. In the anaerobic case, Comamonas sp. and Achromobacter sp. reduced V(V) to V(IV) for detoxification regulated by the napA gene. This study provides a deep understanding of the V speciation in smelting ash and microbial responses, inspiring promising bioremediation strategies to reduce its negative environmental impacts.
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Affiliation(s)
- Jinxi He
- MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, School of Water Resources and Environment, China University of Geosciences Beijing, Beijing 100083, China
| | - Baogang Zhang
- MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, School of Water Resources and Environment, China University of Geosciences Beijing, Beijing 100083, China
| | - Wenyue Yan
- MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, School of Water Resources and Environment, China University of Geosciences Beijing, Beijing 100083, China
| | - Yujian Lai
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Yang Tang
- MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, School of Water Resources and Environment, China University of Geosciences Beijing, Beijing 100083, China
| | - Yawei Han
- MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, School of Water Resources and Environment, China University of Geosciences Beijing, Beijing 100083, China
| | - Jingfu Liu
- School of Environment, Hangzhou Institute for Advanced Study, UCAS, Hangzhou 310024, China
- Institute of Environment and Health, Jianghan University, Wuhan 430056, China
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3
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Zhang B, Zhang H, He J, Zhou S, Dong H, Rinklebe J, Ok YS. Vanadium in the Environment: Biogeochemistry and Bioremediation. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023; 57:14770-14786. [PMID: 37695611 DOI: 10.1021/acs.est.3c04508] [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] [Indexed: 09/12/2023]
Abstract
Vanadium(V) is a highly toxic multivalent, redox-sensitive element. It is widely distributed in the environment and employed in various industrial applications. Interactions between V and (micro)organisms have recently garnered considerable attention. This Review discusses the biogeochemical cycling of V and its corresponding bioremediation strategies. Anthropogenic activities have resulted in elevated environmental V concentrations compared to natural emissions. The global distributions of V in the atmosphere, soils, water bodies, and sediments are outlined here, with notable prevalence in Europe. Soluble V(V) predominantly exists in the environment and exhibits high mobility and chemical reactivity. The transport of V within environmental media and across food chains is also discussed. Microbially mediated V transformation is evaluated to shed light on the primary mechanisms underlying microbial V(V) reduction, namely electron transfer and enzymatic catalysis. Additionally, this Review highlights bioremediation strategies by exploring their geochemical influences and technical implementation methods. The identified knowledge gaps include the particulate speciation of V and its associated environmental behaviors as well as the biogeochemical processes of V in marine environments. Finally, challenges for future research are reported, including the screening of V hyperaccumulators and V(V)-reducing microbes and field tests for bioremediation approaches.
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Affiliation(s)
- Baogang Zhang
- MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, School of Water Resources and Environment, China University of Geosciences Beijing, Beijing 100083, China
| | - Han Zhang
- MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, School of Water Resources and Environment, China University of Geosciences Beijing, Beijing 100083, China
| | - Jinxi He
- MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, School of Water Resources and Environment, China University of Geosciences Beijing, Beijing 100083, China
| | - Shungui Zhou
- Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Hailiang Dong
- State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences Beijing, Beijing 100083, China
| | - Jörg Rinklebe
- University of Wuppertal, School of Architecture and Civil Engineering, Institute of Foundation Engineering, Water- and Waste-Management, Laboratory of Soil- and Groundwater-Management, Pauluskirchstraße 7, Wuppertal 42285, Germany
| | - Yong Sik Ok
- Korea Biochar Research Center, APRU Sustainable Waste Management Program & Division of Environmental Science and Ecological Engineering, Korea University, Seoul 02841, Republic of Korea
- International ESG Association (IESGA), Seoul 02841, Republic of Korea
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4
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Wu ZZ, Gan ZW, Zhang YX, Chen SB, Gan CD, Yang K, Yang JY. Transcriptomic and metabolomic perspectives for the growth of alfalfa (Medicago sativa L.) seedlings with the effect of vanadium exposure. CHEMOSPHERE 2023:139222. [PMID: 37343642 DOI: 10.1016/j.chemosphere.2023.139222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 06/12/2023] [Accepted: 06/13/2023] [Indexed: 06/23/2023]
Abstract
Hitherto, the effect of vanadium on higher plant growth remains an open topic. Therefore, nontargeted metabolomic and RNA-Seq profiling were implemented to unravel the possible alteration in alfalfa seedlings subjected to 0.1 mg L-1 (B group) and 0.5 mg L-1 (C group) pentavalent vanadium [(V(V)] versus control (A group) in this study. Results revealed that vanadium exposure significantly altered some pivotal transcripts and metabolites. The number of differentially expressed genes (DEGs) markedly up- and down-regulated was 21 and 23 in B_vs_A, 27 and 33 in C_vs_A, and 24 and 43 in C_vs_B, respectively. The number for significantly up- and down-regulated differential metabolites was 17 and 15 in B_vs_A, 43 and 20 in C_vs_A, and 24 and 16 in C_vs_B, respectively. Metabolomics and transcriptomics co-analysis characterized three significantly enriched metabolic pathways in C_vs_A comparing group, viz., α-linolenic acid metabolism, flavonoid biosynthesis, and phenylpropanoid biosynthesis, from which some differentially expressed genes and differential metabolites participated. The metabolite of traumatic acid in α-linolenic acid metabolism and apigenin in flavonoid biosynthesis were markedly upregulated, while phenylalanine in phenylpropanoid biosynthesis was remarkably downregulated. The genes of allene oxide cyclase (AOC) and acetyl-CoA acyltransferase (fadA) in α-linolenic acid metabolism, and chalcone synthase (CHS), flavonoid 3'-monooxygenase (CYP75B1), and flavonol synthase (FLS) in flavonoid biosynthesis, and caffeoyl-CoA O-methyltransferase (CCoAOMT) in phenylpropanoid biosynthesis were significantly downregulated. While shikimate O-hydroxycinnamoyltransferase (HCT) in flavanoid and phenylpropanoid biosynthesis were conspicuously upregulated. Briefly, vanadium exposure induces a readjustment yielding in metabolite and the correlative synthetic precursors (transcripts/unigenes) in some branched metabolic pathways. This study provides a practical and in-depth perspective from transcriptomics and metabolomics in investigating the effects conferred by vanadium on plant growth and development.
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Affiliation(s)
- Zhen-Zhong Wu
- College of Architecture and Environment, Sichuan University, Chengdu, 610065, Sichuan, China; College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, 730000, Gansu, China
| | - Zhi-Wei Gan
- College of Architecture and Environment, Sichuan University, Chengdu, 610065, Sichuan, China
| | - You-Xian Zhang
- College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, 730000, Gansu, China
| | - Si-Bei Chen
- College of Architecture and Environment, Sichuan University, Chengdu, 610065, Sichuan, China
| | - Chun-Dan Gan
- College of Architecture and Environment, Sichuan University, Chengdu, 610065, Sichuan, China
| | - Kai Yang
- College of Architecture and Environment, Sichuan University, Chengdu, 610065, Sichuan, China
| | - Jin-Yan Yang
- College of Architecture and Environment, Sichuan University, Chengdu, 610065, Sichuan, China.
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5
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Long Z, Bing H, Zhu H, Wu Y. Soil covering measure mitigates vanadium loss during short-term simulated rainfall in the vanadium titano-magnetite tailings reservoir. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 330:117201. [PMID: 36603266 DOI: 10.1016/j.jenvman.2022.117201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2022] [Revised: 12/18/2022] [Accepted: 12/30/2022] [Indexed: 06/17/2023]
Abstract
Soil covering is an operative measure to decline pollutant release in tailings reservoirs and promote vegetation restoration, yet urgent research still needs to probe into pollutant leaching and migration in the artifact technology under extreme precipitation. Here, a soil column leaching experiment was designed to explore the migration and behaviors of vanadium (V) in the system of vanadium titano-magnetite tailings (VTMTs) covered by soils with different depths (5 cm, 10 cm, and 15 cm). Chemical fractions of V in the VTMTs and covered soils were analyzed to decipher the mechanisms underlying the V migration. We found a limited V leaching (0.26-0.52 μg/L, <0.01% of total V) in the columns during the experiments, and V in the VTMTs was not apt to be leached or migrate upward to the overlying soils. The soil volumes overlaid had nonsignificant effect on the V behaviors in the VTMTs (P > 0.05), because of the dominant and stable residual V (96.4% of total V) in the tailings. Although acid soluble V might be transformed to oxidizable V, it was resupplied by the fractions of weak-bound V in the solid phases during the leaching experiments. The mineral metal (hydr)oxides (e.g., aluminum, iron) determined the V behaviors in the VTMTs via absorption effect, and the high affinity of V to organic matters probably prevented its migration throughout the overlying soils. The results indicate that soil covering measure in the VTMTs reservoirs effectively reduces V migration or release from the tailings through leaching or upward migration, which provides a significant guidance for vegetation restoration in V-rich tailings reservoirs.
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Affiliation(s)
- Zhijie Long
- Key Laboratory of Land Resources Evaluation and Monitoring in Southwest, Ministry of Education, Sichuan Normal University, Chengdu, 610066, China.
| | - Haijian Bing
- Key Laboratory of Mountain Surface Processes and Ecological Regulation, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, 610041, China.
| | - He Zhu
- Key Laboratory of Mountain Surface Processes and Ecological Regulation, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, 610041, China.
| | - Yanhong Wu
- Key Laboratory of Mountain Surface Processes and Ecological Regulation, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, 610041, China.
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6
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Owens PN, Petticrew EL, Albers SJ, French TD, Granger B, Laval B, Lindgren J, Sussbauer R, Vagle S. Annual pulses of copper-enriched sediment in a North American river downstream of a large lake following the catastrophic failure of a mine tailings storage facility. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 856:158927. [PMID: 36152844 DOI: 10.1016/j.scitotenv.2022.158927] [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: 05/28/2022] [Revised: 08/15/2022] [Accepted: 09/18/2022] [Indexed: 06/16/2023]
Abstract
Failures of mine tailings storage facilities (TSF) can have profound and long-lasting effects on the downstream receiving environment. Virtually all spills to date have been into river systems without large lakes that may buffer downstream impacts. In August 2014, the failure of the Mount Polley copper (Cu)-gold mine TSF in British Columbia, Canada, released ~25 × 106 m3 of water and solids; globally, this is the second largest TSF spill in history. Over 18 × 106 m3 was delivered to Quesnel Lake, which is ~9 km from the TSF and is the third deepest lake in North America, and a crucial habitat for Pacific salmon and trout populations. We determined the sediment-associated Cu concentrations and fluxes in Quesnel River, downstream of the lake, from August 2014 to February 2021 based on the analysis of >400 samples of sediment, mainly collected using a continuous-flow centrifuge. During each winter since the spill, Cu concentrations in the fluvial sediment in the upper reaches of the river (~35 km from the TSF) were elevated relative to regional background concentrations and samples collected before the spill. Maximum Cu concentrations were ~410 mg kg-1 which exceeds Canadian sediment quality guidelines for the protection of aquatic organisms (197 mg kg-1). Monitoring of Quesnel Lake since the spill shows that these annual pulses in the winter are due to resuspension of unconsolidated tailings and sediments at the bottom of Quesnel Lake, during autumnal lake turnover, which become mixed throughout the water column and subsequently flow into Quesnel River. Results show that while large lakes may buffer downstream aquatic systems from contaminated sediment, they may prolong the environmental impact. These findings are crucial in understanding how lake processes may modify the effects of TSF spills on downstream aquatic systems.
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Affiliation(s)
- P N Owens
- Department of Geography, Earth and Environmental Sciences, University of Northern British Columbia, Prince George, British Columbia V2N 4Z9, Canada; Quesnel River Research Centre, University of Northern British Columbia, Likely, British Columbia V0L 1N0, Canada.
| | - E L Petticrew
- Department of Geography, Earth and Environmental Sciences, University of Northern British Columbia, Prince George, British Columbia V2N 4Z9, Canada; Quesnel River Research Centre, University of Northern British Columbia, Likely, British Columbia V0L 1N0, Canada
| | - S J Albers
- Department of Geography, Earth and Environmental Sciences, University of Northern British Columbia, Prince George, British Columbia V2N 4Z9, Canada
| | - T D French
- Department of Geography, Earth and Environmental Sciences, University of Northern British Columbia, Prince George, British Columbia V2N 4Z9, Canada; Quesnel River Research Centre, University of Northern British Columbia, Likely, British Columbia V0L 1N0, Canada
| | - B Granger
- Quesnel River Research Centre, University of Northern British Columbia, Likely, British Columbia V0L 1N0, Canada; Department of Civil Engineering, University of British Columbia, Vancouver, British Columbia, Canada
| | - B Laval
- Department of Civil Engineering, University of British Columbia, Vancouver, British Columbia, Canada
| | - J Lindgren
- Quesnel River Research Centre, University of Northern British Columbia, Likely, British Columbia V0L 1N0, Canada
| | - R Sussbauer
- Department of Geography, Earth and Environmental Sciences, University of Northern British Columbia, Prince George, British Columbia V2N 4Z9, Canada; Quesnel River Research Centre, University of Northern British Columbia, Likely, British Columbia V0L 1N0, Canada
| | - S Vagle
- Institute of Ocean Sciences, Fisheries and Oceans Canada, Sidney, British Columbia, Canada
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7
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Tang QX, Gan CD, Yang JY. Photo-induced reduction of vanadium in vanadium-containing iron/manganese oxide agglomerates by oxalic acid. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 316:120590. [PMID: 36336187 DOI: 10.1016/j.envpol.2022.120590] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Revised: 10/08/2022] [Accepted: 11/01/2022] [Indexed: 06/16/2023]
Abstract
The stockpiling of vanadium-containing tailings allows vanadium to migrate into the surrounding area, resulting in toxic metal contamination. By using the vanadium-bearing iron/manganese (Fe/Mn) oxide agglomerates as the simulated tailings, the feasibility of photo-induced reduction of vanadium by oxalic acid was investigated. Batch effects of the available light and the reducing agents on agglomerates were investigated. Results showed that oxalic acid (5 mmol L-1) can convert V(V) to V(IV) and convert Fe(III) released from the Fe/Mn oxide agglomerates to Fe(II) under both light and dark conditions. After 45 d of reaction in the dark, oxalic acid converted 33.54% Fe(III) and 100% V(V) in the leachate into Fe(II) and V(IV). The Fenton reaction occurred by light irradiation significantly increased the redox potential in the solution, and also caused V(IV) to be oxidized. Overall, oxalic acid can rapidly reduce V(V) to V(IV), but sunlight may have an inhibitory effect on the reduction reaction. Present study can deepen the understanding of the mechanism for valence transformation of elements in minerals by sunlight, and can help in implementing tailings treatment and environmental remediation by using oxalic acid and avoiding light.
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Affiliation(s)
- Qi-Xuan Tang
- College of Architecture and Environment, Sichuan University, Chengdu, 610065, China
| | - Chun-Dan Gan
- College of Architecture and Environment, Sichuan University, Chengdu, 610065, China; Yibin Institute of Industrial Technology, Sichuan University Yibin Park, Yibin, 644000, China
| | - Jin-Yan Yang
- College of Architecture and Environment, Sichuan University, Chengdu, 610065, China; Yibin Institute of Industrial Technology, Sichuan University Yibin Park, Yibin, 644000, China.
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8
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Abernathy M, Schaefer MV, Ramirez R, Garniwan A, Lee I, Zaera F, Polizzotto ML, Ying SC. Vanadate Retention by Iron and Manganese Oxides. ACS EARTH & SPACE CHEMISTRY 2022; 6:2041-2052. [PMID: 36016759 PMCID: PMC9393891 DOI: 10.1021/acsearthspacechem.2c00116] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Revised: 07/04/2022] [Accepted: 07/25/2022] [Indexed: 06/15/2023]
Abstract
Anthropogenic emissions of vanadium (V) into terrestrial and aquatic surface systems now match those of geogenic processes, and yet, the geochemistry of vanadium is poorly described in comparison to other comparable contaminants like arsenic. In oxic systems, V is present as an oxyanion with a +5 formal charge on the V center, typically described as H x VO4 (3-x)-, but also here as V(V). Iron (Fe) and manganese (Mn) (oxy)hydroxides represent key mineral phases in the cycling of V(V) at the solid-solution interface, and yet, fundamental descriptions of these surface-processes are not available. Here, we utilize extended X-ray absorption fine structure (EXAFS) and thermodynamic calculations to compare the surface complexation of V(V) by the common Fe and Mn mineral phases ferrihydrite, hematite, goethite, birnessite, and pyrolusite at pH 7. Inner-sphere V(V) complexes were detected on all phases, with mononuclear V(V) species dominating the adsorbed species distribution. Our results demonstrate that V(V) adsorption is exergonic for a variety of surfaces with differing amounts of terminal -OH groups and metal-O bond saturations, implicating the conjunctive role of varied mineral surfaces in controlling the mobility and fate of V(V) in terrestrial and aquatic systems.
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Affiliation(s)
- Macon
J. Abernathy
- Stanford
Synchrotron Radiation Lightsource, SLAC
National Accelerator Laboratory, Menlo Park, California 94025, United States
| | - Michael V. Schaefer
- Department
of Earth and Environmental Science, New
Mexico Institute of Mining and Technology, Socorro, New Mexico 87801, United States
| | - Roxana Ramirez
- Environmental
Sciences Department, University of California-Riverside, Riverside, California 92521, United States
| | - Abdi Garniwan
- Environmental
Sciences Department, University of California-Riverside, Riverside, California 92521, United States
| | - Ilkeun Lee
- Department
of Chemistry, University of California-Riverside, Riverside, California 92521, United States
| | - Francisco Zaera
- Department
of Chemistry, University of California-Riverside, Riverside, California 92521, United States
| | - Matthew L. Polizzotto
- Department
of Earth Sciences, University of Oregon, Eugene, Oregon 97403, United States
| | - Samantha C. Ying
- Environmental
Sciences Department, University of California-Riverside, Riverside, California 92521, United States
- Environmental
Toxicology Graduate Program, University
of California-Riverside, Riverside, California 92521, United States
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9
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He Y, Huang D, Li S, Shi L, Sun W, Sanford RA, Fan H, Wang M, Li B, Li Y, Tang X, Dong Y. Profiling of Microbial Communities in the Sediments of Jinsha River Watershed Exposed to Different Levels of Impacts by the Vanadium Industry, Panzhihua, China. MICROBIAL ECOLOGY 2021; 82:623-637. [PMID: 33580272 DOI: 10.1007/s00248-021-01708-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2020] [Accepted: 02/01/2021] [Indexed: 05/25/2023]
Abstract
The mining, smelting, manufacturing, and disposal of vanadium (V) and associated products have caused serious environmental problems. Although the microbial ecology in V-contaminated soils has been intensively studied, the impacted watershed ecosystems have not been systematically investigated. In this study, geochemistry and microbial structure were analyzed along ~30 km of the Jinsha River and its two tributaries across the industrial areas in Panzhihua, one of the primary V mining and production cities in China. Geochemical analyses showed different levels of contamination by metals and metalloids in the sediments, with high degrees of contamination observed in one of the tributaries close to the industrial park. Analyses of the V4 hypervariable region of 16S rRNA genes of the microbial communities in the sediments showed significant decrease in microbial diversity and microbial structure in response to the environmental gradient (e.g., heavy metals, total sulfur, and total nitrogen). Strong association of the taxa (e.g., Thauera, Algoriphagus, Denitromonas, and Fontibacter species) with the metals suggested selection for these potential metal-resistant and/or metabolizing populations. Further co-occurrence network analysis showed that many identified potential metal-mediating species were among the keystone taxa that were closely associated in the same module, suggesting their strong inter-species interactions but relative independence from other microorganisms in the hydrodynamic ecosystems. This study provided new insight into the microbe-environment interactions in watershed ecosystems differently impacted by the V industries. Some of the phylotypes identified in the highly contaminated samples exhibited potential for bioremediation of toxic metals (e.g., V and Cr).
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Affiliation(s)
- Yu He
- School of Environmental Studies, China University of Geosciences (Wuhan), Wuhan, China
| | - Dongmei Huang
- School of Environmental Studies, China University of Geosciences (Wuhan), Wuhan, China
| | - Shuyi Li
- School of Environmental Studies, China University of Geosciences (Wuhan), Wuhan, China
| | - Liang Shi
- School of Environmental Studies, China University of Geosciences (Wuhan), Wuhan, China
- State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences (Wuhan), Wuhan, China
| | - Weimin Sun
- Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou, China
| | - Robert A Sanford
- Department of Geology, University of Illinois Urbana-Champaign, Champaign, USA
| | - Hao Fan
- Changjiang Water Resources Protection Institute, Wuhan, China
| | - Meng Wang
- Changjiang Water Resources Protection Institute, Wuhan, China
| | - Baoqin Li
- Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou, China
| | - Ye Li
- School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan, China
| | - Xiliang Tang
- China Three Gorges Projects Development Co., Ltd, Beijing, China
| | - Yiran Dong
- School of Environmental Studies, China University of Geosciences (Wuhan), Wuhan, China.
- State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences (Wuhan), Wuhan, China.
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10
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Khalidy R, Santos RM. Assessment of geochemical modeling applications and research hot spots-a year in review. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2021; 43:3351-3374. [PMID: 33651264 DOI: 10.1007/s10653-021-00862-w] [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: 05/14/2020] [Accepted: 02/14/2021] [Indexed: 06/12/2023]
Abstract
Geochemical modeling has been employed in several fields of science and engineering in recent years. This review seeks to provide an overview of case studies that applied geochemical modeling in the 2019 year, which includes over 250 articles. This review is intended to inform new users on the possibilities that geochemical modeling brings, while also informing existing and past users on its latest developments. The survey of studies was conducted with an emphasis on the modeling techniques, the objective of studies, the prevalent simulated variables and the use of specific software packages. The analysis showed that geochemical modeling is still predominantly employed in experimental projects and in the form of equilibrium modeling. PHREEQC and Visual MINTEQ were recognized as the most popular software packages for simulating a wide range of processes, using equilibrium or other geochemical modeling forms. The study of fluid-rock interactions and pollution and remediation processes can be regarded as the principal geochemical modeling objectives, constituting 37% and 36% of the reviewed studies, respectively. Focusing on fluid-rock interactions, hydrogeochemical processes, carbon capture and storage and enhanced oil recovery have been the main topics examined with geochemical modeling. Assessments of the toxicity of metals in terms of leachate and mobilization, as well as their removal from soil and water systems, have been major topics investigated with the aid of geochemical modeling in terms of pollution and remediation research. It was found that the scholars benefit from geochemical modeling in their research both as a main technique and as an accessory tool. Saturation index, elemental concentration and speciation, mineral mass and composition and pH were among the most common variables modeled in reviewed studies. Geochemical modeling has gained a wider user base in recent years, and many research groups have used it in consecutive studies to deepen knowledge. However, much potential for further dissemination still remains.
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Affiliation(s)
- Reza Khalidy
- School of Engineering, University of Guelph, 50 Stone Road East, Guelph, ON, Canada
| | - Rafael M Santos
- School of Engineering, University of Guelph, 50 Stone Road East, Guelph, ON, Canada.
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Wang X, Xia R, Sun M, Hu F. Metagenomic sequencing reveals detoxifying and tolerant functional genes in predominant bacteria assist Metaphire guillelmi adapt to soil vanadium exposure. JOURNAL OF HAZARDOUS MATERIALS 2021; 415:125666. [PMID: 34088179 DOI: 10.1016/j.jhazmat.2021.125666] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Revised: 03/12/2021] [Accepted: 03/12/2021] [Indexed: 06/12/2023]
Abstract
Due to extensive vanadium (V) mining and processing, an increasing amount of V has accumulated in soil, which poses a threat to public health. Consequently, we used earthworm (Metaphire guillelmi) incubation trials in V-contaminated soil (0-300 mg kg-1) to explore the response of soil indigenous bacteria and earthworm intestinal bacteria to V stress. Metagenomic analysis revealed that V exposure changed the bacterial composition in the soil and the worm gut. However, although the core species varied between soil and worm gut, the two systems shared the predominant bacteria, including Staphylococcus, Nocardioides, Streptococcus, and Nitrosopumilales. Two functional genotypes were detected in the shared core species, i.e., reductive genes and resistant genes. The reductive genes mainly consisted of those involved in glutathione, cysteine, methionine, sulfur, and nitrogen metabolisms. The resistant genes included those encoding the oxidation damage repair system, the outer membrane protein, the antioxidant enzyme system, the metal-binding, and the heavy-metal efflux. Therefore, the shared core species exert a comprehensive strategy to survive V stress involving the alliance of heavy metal detoxifying and tolerant genes. This study provides novel information about the detoxification mechanisms of bacterial populations in soil and worm gut to survive V stress.
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Affiliation(s)
- Xinwei Wang
- Soil Ecology Lab, College of Resources and Environmental Science, Nanjing Agricultural University, Nanjing 210095, China
| | - Rong Xia
- Soil Ecology Lab, College of Resources and Environmental Science, Nanjing Agricultural University, Nanjing 210095, China
| | - Mingming Sun
- Soil Ecology Lab, College of Resources and Environmental Science, Nanjing Agricultural University, Nanjing 210095, China; Key Laboratory of Plant Immunity, Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, Nanjing Agricultural University, Nanjing, 210095, China.
| | - Feng Hu
- Soil Ecology Lab, College of Resources and Environmental Science, Nanjing Agricultural University, Nanjing 210095, China
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Chen Y, Chen C, Zheng C, Dwaraknath S, Horton MK, Cabana J, Rehr J, Vinson J, Dozier A, Kas JJ, Persson KA, Ong SP. Database of ab initio L-edge X-ray absorption near edge structure. Sci Data 2021; 8:153. [PMID: 34117266 PMCID: PMC8196187 DOI: 10.1038/s41597-021-00936-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Accepted: 04/28/2021] [Indexed: 12/22/2022] Open
Abstract
The L-edge X-ray Absorption Near Edge Structure (XANES) is widely used in the characterization of transition metal compounds. Here, we report the development of a database of computed L-edge XANES using the multiple scattering theory-based FEFF9 code. The initial release of the database contains more than 140,000 L-edge spectra for more than 22,000 structures generated using a high-throughput computational workflow. The data is disseminated through the Materials Project and addresses a critical need for L-edge XANES spectra among the research community.
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Affiliation(s)
- Yiming Chen
- Department of Nanoengineering, University of California San Diego, La Jolla, CA, 92093, USA
| | - Chi Chen
- Department of Nanoengineering, University of California San Diego, La Jolla, CA, 92093, USA
| | - Chen Zheng
- Department of Nanoengineering, University of California San Diego, La Jolla, CA, 92093, USA
| | - Shyam Dwaraknath
- Materials Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Matthew K Horton
- Materials Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Jordi Cabana
- Department of Chemistry, University of Illinois at Chicago, Chicago, IL, 60607, USA
| | - John Rehr
- Department of Physics, University of Washington, Seattle, WA, 98195, USA
| | - John Vinson
- Material Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, MD, 20899, USA
| | - Alan Dozier
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Centers for Disease Control, Cincinnati, OH, 45226, USA
| | - Joshua J Kas
- Department of Physics, University of Washington, Seattle, WA, 98195, USA
| | - Kristin A Persson
- Department of Materials Science and Engineering, University of California Berkeley, Berkeley, CA, 94720, USA
- Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Shyue Ping Ong
- Department of Nanoengineering, University of California San Diego, La Jolla, CA, 92093, USA.
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Sá F, Longhini CM, Costa ES, da Silva CA, Cagnin RC, Gomes LEDO, Lima AT, Bernardino AF, Neto RR. Time-sequence development of metal(loid)s following the 2015 dam failure in the Doce river estuary, Brazil. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 769:144532. [PMID: 33485202 DOI: 10.1016/j.scitotenv.2020.144532] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 12/10/2020] [Accepted: 12/12/2020] [Indexed: 06/12/2023]
Abstract
In the context of the Doce river (Southeast Brazil) Fundão dam disaster in 2015, we monitored the changes in concentrations of metal(loid)s in water and sediment and their particulate and dissolved partitioning over time. Samples were collected before, during, and after the mine tailings arrival to the Doce river estuary (pre-impact: 12, 10, 3 and 1 day; acute stage: tailing day - TD and 1 day after - DA; chronic stage: 3 months and 1 year post-disaster). Our results show that metal(loid) concentrations significantly increased with time after the disaster and changed their chemical partitioning in the water. 35.2 mg Fe L-1 and 14.4 mg Al L-1 were observed in the total (unfiltered) water during the acute stage, while aqueous Al, As, Cd, Cr, Cu, Fe, Mn, Ni, Pb, Se and Zn concentrations all exceeded both Brazilian and international safe levels for water quality. The Al, Fe and Pb partitioning coefficient log (Kd) decrease in the acute stage could be related to the high colloid content in the tailings. We continued to observe high concentrations for Al, Ba, Cd, Cr, Cu, Fe, V and Zn mainly in the particulate fraction during the chronic stage. Furthermore, the Doce river estuary had been previously contaminated by As, Ba, Cr, Cu, Mn, Ni and Pb, with a further increase in sediment through the tailing release (e.g. 9-fold increase for Cr, from 3.61 ± 2.19 μg g-1 in the pre-impact to 32.16 ± 20.94 μg·g-1 in the chronic stage). Doce river sediments and original tailing samples were similar in metal(loid) composition for Al, As, Cd, Cr, Cu, Fe, V and Zn. As a result, these elements could be used as geochemical markers of the Fundão tailings and considering other key parameters to define a baseline for monitoring the impacts of this environmental disaster.
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Affiliation(s)
- Fabian Sá
- Laboratório de Geoquímica Ambiental e Poluição Marinha, Departamento de Oceanografia e Ecologia, Universidade Federal do Espírito Santo, Av. Fernando Ferrari, 514, Goiabeiras, Vitória, ES 29055-460, Brazil.
| | - Cybelle Menolli Longhini
- Laboratório de Geoquímica Ambiental e Poluição Marinha, Departamento de Oceanografia e Ecologia, Universidade Federal do Espírito Santo, Av. Fernando Ferrari, 514, Goiabeiras, Vitória, ES 29055-460, Brazil
| | - Eduardo Schettini Costa
- Laboratório de Geoquímica Ambiental e Poluição Marinha, Departamento de Oceanografia e Ecologia, Universidade Federal do Espírito Santo, Av. Fernando Ferrari, 514, Goiabeiras, Vitória, ES 29055-460, Brazil
| | - Cesar Alexandro da Silva
- Laboratório de Geoquímica Ambiental e Poluição Marinha, Departamento de Oceanografia e Ecologia, Universidade Federal do Espírito Santo, Av. Fernando Ferrari, 514, Goiabeiras, Vitória, ES 29055-460, Brazil
| | - Renata Caiado Cagnin
- Laboratório de Geoquímica Ambiental e Poluição Marinha, Departamento de Oceanografia e Ecologia, Universidade Federal do Espírito Santo, Av. Fernando Ferrari, 514, Goiabeiras, Vitória, ES 29055-460, Brazil
| | - Luiz Eduardo de Oliveira Gomes
- Grupo de Ecologia Bentônica, Departamento de Oceanografia e Ecologia, Universidade Federal do Espírito Santo, Av. Fernando Ferrari, 514, Goiabeiras, Vitória, ES 29055-460, Brazil
| | - Ana Teresa Lima
- Laboratório de Geoquímica Ambiental e Poluição Marinha, Departamento de Oceanografia e Ecologia, Universidade Federal do Espírito Santo, Av. Fernando Ferrari, 514, Goiabeiras, Vitória, ES 29055-460, Brazil; Department of Civil Engineering, Technical University of Denmark, Lyngby, Denmark
| | - Angelo Fraga Bernardino
- Grupo de Ecologia Bentônica, Departamento de Oceanografia e Ecologia, Universidade Federal do Espírito Santo, Av. Fernando Ferrari, 514, Goiabeiras, Vitória, ES 29055-460, Brazil
| | - Renato Rodrigues Neto
- Laboratório de Geoquímica Ambiental e Poluição Marinha, Departamento de Oceanografia e Ecologia, Universidade Federal do Espírito Santo, Av. Fernando Ferrari, 514, Goiabeiras, Vitória, ES 29055-460, Brazil
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Sun X, Qiu L, Kolton M, Häggblom M, Xu R, Kong T, Gao P, Li B, Jiang C, Sun W. V V Reduction by Polaromonas spp. in Vanadium Mine Tailings. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:14442-14454. [PMID: 33125214 DOI: 10.1021/acs.est.0c05328] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Vanadium (V) is an important metal with critical industrial and medical applications. Elevated V contamination, however, can be a threat to the environment and human health. Microorganisms can reduce the more toxic and mobile VV to the less toxic and immobile VIV, which could be a detoxification and energy metabolism strategy adopted by V-reducing bacteria (VRB). The limited understanding of microbial responses to V contamination and the mechanisms for VV reduction, however, hamper our capability to attenuate V contamination. This study focused on determining the microbial responses to elevated V concentration and the mechanisms of VV reduction in V tailings. The bacterial communities were characterized and compared between the V tailings and the less contaminated adjacent mineral soils. Further, VV-reducing enrichments indicated that bacteria associated with Polaromonas, a genus belonging to the family Burkholderiaceae, were potentially responsible for VV reduction. Retrieved metagenome-assembled genomes (MAGs) suggested that the Polaromonas spp. encoded genes (cymA, omcA, and narG) were responsible for VV reduction. Additionally, Polaromonas spp. was metabolically versatile and could use both organic and inorganic electron donors. The metabolic versatility of Polaromonas spp. may be important for its ability to flourish in the V tailings.
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Affiliation(s)
- Xiaoxu Sun
- National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou 510650, China
- Guangdong-Hong Kong-Macao Joint Laboratory for Environmental Pollution and Control, Guangzhou 510650, China
| | - Lang Qiu
- National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou 510650, China
- Guangdong-Hong Kong-Macao Joint Laboratory for Environmental Pollution and Control, Guangzhou 510650, China
| | - Max Kolton
- National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou 510650, China
- Guangdong-Hong Kong-Macao Joint Laboratory for Environmental Pollution and Control, Guangzhou 510650, China
| | - Max Häggblom
- Department of Biochemistry and Microbiology, Rutgers University, New Brunswick, New Jersey 08901, United States
| | - Rui Xu
- National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou 510650, China
- Guangdong-Hong Kong-Macao Joint Laboratory for Environmental Pollution and Control, Guangzhou 510650, China
| | - Tianle Kong
- National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou 510650, China
- Guangdong-Hong Kong-Macao Joint Laboratory for Environmental Pollution and Control, Guangzhou 510650, China
| | - Pin Gao
- National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou 510650, China
- Guangdong-Hong Kong-Macao Joint Laboratory for Environmental Pollution and Control, Guangzhou 510650, China
| | - Baoqin Li
- National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou 510650, China
- Guangdong-Hong Kong-Macao Joint Laboratory for Environmental Pollution and Control, Guangzhou 510650, China
| | - Chengjian Jiang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi Research Center for Microbial and Enzyme Engineering Technology, College of Life Science and Technology, Guangxi University, Nanning 530004, China
| | - Weimin Sun
- National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou 510650, China
- Guangdong-Hong Kong-Macao Joint Laboratory for Environmental Pollution and Control, Guangzhou 510650, China
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Vessey CJ, Lindsay MBJ. Aqueous Vanadate Removal by Iron(II)-Bearing Phases under Anoxic Conditions. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:4006-4015. [PMID: 32142601 DOI: 10.1021/acs.est.9b06250] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Vanadium contamination is a growing environmental hazard worldwide. Aqueous vanadate (HxVVO4(3-x)-(aq)) concentrations are often controlled by surface complexation with metal (oxyhydr)oxides in oxic environments. However, the geochemical behavior of this toxic redox-sensitive oxyanion in anoxic environments is poorly constrained. Here, we describe results of batch experiments to determine kinetics and mechanisms of aqueous H2VVO4- (100 μM) removal under anoxic conditions in suspensions (2.0 g L-1) of magnetite, siderite, pyrite, and mackinawite. We present results of parallel experiments using ferrihydrite (2.0 g L-1) and Fe2+(aq) (200 μM) for comparison. Siderite and mackinawite reached near complete removal (46 μmol g-1) of aqueous vanadate after 3 h and rates were generally consistent with ferrihydrite, whereas magnetite removed 18 μmol g-1 of aqueous vanadate after 48 h and uptake by pyrite was limited. Removal during reaction with Fe2+(aq) was observed after 8 h, concomitant with precipitation of secondary Fe phases. X-ray absorption spectroscopy revealed V(V) reduction to V(IV) and formation of bidentate corner-sharing surface complexes on magnetite and siderite, and with Fe2+(aq) reaction products. These data also suggest that V(IV) is incorporated into the mackinawite structure. Overall, we demonstrate that Fe(II)-bearing phases can promote aqueous vanadate attenuation and, therefore, limit dissolved V concentrations in anoxic environments.
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Affiliation(s)
- Colton J Vessey
- Department of Geological Sciences, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5E2, Canada
| | - Matthew B J Lindsay
- Department of Geological Sciences, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5E2, Canada
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