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Song L, Yang F, Bostick BC, Du H, Dai Y, Li C, Sun J, Liu C. Comparison of multiple preservation and digestion methods for determination of tungsten concentrations in environmental media using ICP-MS. Talanta 2024; 276:126307. [PMID: 38788381 DOI: 10.1016/j.talanta.2024.126307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Revised: 05/10/2024] [Accepted: 05/20/2024] [Indexed: 05/26/2024]
Abstract
Tungsten is an emerging environmental pollutant. However, a proved robust method for preserving and determining the concentrations of tungsten in environmental media is still lacking. This study examined and compared the suitability of classic methods and previously reported tungsten-oriented methods on preserving dissolved tungsten and recovering tungsten from soil/sediment matrix. Tungsten concentrations in the water samples and digestates were then determined by inductively coupled plasma mass spectrometry. Our data showed that the tungsten-oriented HF and alkaline preservatives indeed successfully maintained the stability of dissolved tungsten. Even when preserved using HNO3 or HCl, dissolved tungsten concentrations did not notably change in most of our water samples over the course of ∼4 months. Using glass containers for storing water samples also did not produce much difference from using high-density polyethylene containers. Our data further suggested that the addition of HF in digestion was important for tungsten solubilization from soil/sediment matrix. The digestion methods with HNO3/HCl/HF and HNO3/HF/NH4OH/EDTA both yielded quantitative recoveries of tungsten from certified reference materials and known synthetic samples, while the other tested methods had limited recoveries. The methods validated by this study could be used to accurately determine tungsten concentrations in environmental media and thereby to assess the fate and potential risks of tungsten.
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Affiliation(s)
- Lei Song
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550081, China; College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing, 101408, China
| | - Fei Yang
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550081, China
| | - Benjamin C Bostick
- Lamont-Doherty Earth Observatory, Columbia University, 61 Route 9W, Palisades, New York, 10964, United States
| | - Huihui Du
- College of Environment & Ecology, Hunan Agricultural University, Changsha, 410128, China
| | - Yu Dai
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550081, China; School of Public Health, The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang, 550025, China
| | - Chao Li
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550081, China; College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing, 101408, China
| | - Jing Sun
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550081, China.
| | - Chengshuai Liu
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550081, China
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2
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Gan CD, Tang QX, Wang H, Yang JY, Nikitin A. Shewanella oneidensis MR-1 and oxalic acid mediated vanadium reduction and redistribution in vanadium-containing tailings. JOURNAL OF HAZARDOUS MATERIALS 2023; 451:131077. [PMID: 36871469 DOI: 10.1016/j.jhazmat.2023.131077] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/01/2023] [Revised: 02/13/2023] [Accepted: 02/22/2023] [Indexed: 06/18/2023]
Abstract
The microbially- and chemically-mediated redox process is critical in controlling the fate of vanadium (V) in tailing environment. Although the microbial reduction of V has been widely studied, the coupled biotic reduction mediated by beneficiation reagents and the underlying mechanism remain unclear. Herein, the reduction and redistribution of V in V-containing tailings and Fe/Mn oxide aggregates mediated by Shewanella oneidensis MR-1 and oxalic acid were explored. The dissolution of Fe-(hydr)oxides by oxalic acid promoted the microbe-mediated V release from solid-phase. After 48-day of reaction, the dissolved V concentrations in the bio-oxalic acid treatment reached maximum values of 1.72 ± 0.36 mg L-1 and 0.42 ± 0.15 mg L-1 in the tailing system and the aggregate system, respectively, significantly higher than those in control (0.63 ± 0.14 mg L-1 and 0.08 ± 0.02 mg L-1). As the electron donor, oxalic acid enhanced the electron transfer process of S. oneidensis MR-1 for V(V) reduction. The mineralogical characterization of final products indicates that S. oneidensis MR-1 and oxalic acid promoted solid-state conversion from V2O5 to NaV6O15. Collectively, this study demonstrates that microbe-mediated V release and redistribution in solid-phase were promoted by oxalic acid, suggesting that the role of organic agents for the V biogeochemical cycle in natural systems deserves greater attention.
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Affiliation(s)
- 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
| | - Qi-Xuan Tang
- College of Architecture and Environment, Sichuan University, Chengdu 610065, China
| | - Hao Wang
- College of Architecture and Environment, Sichuan University, Chengdu 610065, China; Key Laboratory of Sustainable Forest Ecosystem Management-Ministry of Education, School of Forestry, Northeast Forestry University, Harbin 150040, 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; Key Laboratory of Sustainable Forest Ecosystem Management-Ministry of Education, School of Forestry, Northeast Forestry University, Harbin 150040, China.
| | - Aleksander Nikitin
- Institute of Radiobiology of the National Academy of Sciences of Belarus, Fedjuninskogo str., 4, 246007 Gomel, Belarus
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3
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Ciampi P, Esposito C, Bartsch E, Alesi EJ, Rehner G, Morettin P, Pellegrini M, Olivieri S, Ranaldo M, Liali G, Papini MP. A data-driven modeling approach for the sustainable remediation of persistent arsenic (As) groundwater contamination in a fractured rock aquifer through a groundwater recirculation well (IEG-GCW®). ENVIRONMENTAL RESEARCH 2023; 217:114827. [PMID: 36410461 DOI: 10.1016/j.envres.2022.114827] [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: 05/30/2022] [Revised: 10/12/2022] [Accepted: 11/14/2022] [Indexed: 06/16/2023]
Abstract
Persistent arsenic (As) pollution sources from anthropogenic activities pose a serious threat to groundwater quality. This work aims to illustrate the application of an innovative remediation technology to remove As from a heavily contaminated fractured aquifer at a historically polluted industrial site. Groundwater circulation well (GCW) technology was tested to significantly increase and accelerate the mobilization and removal of As in the source area. The GCW extracts and re-injects groundwater at different depths of a vertical circulation well. By pumping out and reinjecting in different screen sections of the well, the resulting vertical hydraulic gradients create recirculation cells and affect and mobilize trapped contaminants that cannot be influenced by traditional pumping systems. The first 45-m deep IEG-GCW® system was installed in 2020, equipped with 4 screen sections at different depths and with an above-ground As removal system by oxidation and filtration on Macrolite (Enki). A geomodeling approach supports both remediation and multi-source data interpretation. The first months of operation demonstrate the hydraulic effectiveness of the IEG-GCW® system in the fractured rock aquifer and the ability to significantly enhance As removal compared to conventional pumping wells currently feeding a centralized treatment system. The recirculation flow rate amounts to about 2 m3/h. Water pumped and treated by the GCW system is reintroduced with As concentrations reduced by an average of 20%-60%. During the pilot test, the recirculating system removed 23 kg As whilst the entire central pump-and-treat (P&T) system removed 129 kg, although it treated 100 times more water volume. The P&T plant removed 259 mg As per m3 of pumped and treated groundwater while the GCW removed 4814 mg As per m3 of the treated groundwater. The results offer the opportunity for a more environmentally sustainable remediation approach by actively attacking the contamination source rather than containing the plume.
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Affiliation(s)
- Paolo Ciampi
- Department of Earth Sciences, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185, Rome, Italy.
| | - Carlo Esposito
- Department of Earth Sciences, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185, Rome, Italy.
| | - Ernst Bartsch
- IEG Technologie GmbH, Hohlbachweg 2, D-73344, Gruibingen, Baden-Württemberg, Germany.
| | - Eduard J Alesi
- IEG Technologie GmbH, Hohlbachweg 2, D-73344, Gruibingen, Baden-Württemberg, Germany.
| | - Gert Rehner
- IEG Technologie GmbH, Hohlbachweg 2, D-73344, Gruibingen, Baden-Württemberg, Germany.
| | - Piero Morettin
- Enki Ambiente Srl, Via Zandonai 6, 30174, Mestre, Italy.
| | | | | | | | | | - Marco Petrangeli Papini
- Department of Chemistry, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185, Rome, Italy.
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4
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She J, Liu J, He H, Zhang Q, Lin Y, Wang J, Yin M, Wang L, Wei X, Huang Y, Chen C, Lin W, Chen N, Xiao T. Microbial response and adaption to thallium contamination in soil profiles. JOURNAL OF HAZARDOUS MATERIALS 2022; 423:127080. [PMID: 34523503 DOI: 10.1016/j.jhazmat.2021.127080] [Citation(s) in RCA: 32] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Revised: 08/09/2021] [Accepted: 08/27/2021] [Indexed: 06/13/2023]
Abstract
Thallium (Tl) is a trace metal with high toxicity. Comprehensive investigation of spatial distribution of Tl and microorganism is still limited in soils from mining area. In this study, 16S rRNA sequencing and network analysis were used for deciphering the co-occurrence patterns of bacterial communities in two different types of soil profiles around a typical Tl-bearing pyrite mine. The results showed that geochemical parameters (such as pH, S, Tl, Fe and TOM) were the driving forces for shaping the vertical distribution of microbial community. According to network analysis, a wide diversity of microbial modules were present in both soil profiles and affected by depth, significantly associated with variations in Tl geochemical fractionation. Phylogenetic information further unveiled that the microbial modules were mainly dominated by Fe reducing bacteria (FeRB), Fe oxidizing bacteria (FeOB), S oxidizing bacteria and Mn reducing bacteria. The results of metagenome indicated that Fe, Mn and S cycle in soil are closely involved in the biogeochemical cycle of Tl. The findings of co-occurrence patterns in the bacterial network and correlation between microorganisms and different geochemical fractions of Tl may benefit the strategy of bioremediation of Tl-contaminated soils with indigenous microbes.
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Affiliation(s)
- Jingye She
- Key Laboratory of Water Quality and Conservation in the Pearl River Delta, Ministry of Education, Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resources, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, China
| | - Juan Liu
- Key Laboratory of Water Quality and Conservation in the Pearl River Delta, Ministry of Education, Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resources, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, China; Key Laboratory of Mineralogy and Metallogeny, Chinese Academy of Sciences and Guangdong Provincial Key Laboratory of Mineral Physics and Materials, Guangzhou Institute of Geochemistry, Guangzhou 510640, China
| | - Hongping He
- Key Laboratory of Mineralogy and Metallogeny, Chinese Academy of Sciences and Guangdong Provincial Key Laboratory of Mineral Physics and Materials, Guangzhou Institute of Geochemistry, Guangzhou 510640, China
| | - Qiong Zhang
- Department of Earth Sciences, University of Oxford, Oxford, UK
| | - Yuyang Lin
- Key Laboratory of Water Quality and Conservation in the Pearl River Delta, Ministry of Education, Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resources, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, China
| | - Jin Wang
- Key Laboratory of Water Quality and Conservation in the Pearl River Delta, Ministry of Education, Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resources, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, China.
| | - Meiling Yin
- Key Laboratory of Water Quality and Conservation in the Pearl River Delta, Ministry of Education, Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resources, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, China
| | - Lulu Wang
- Key Laboratory of Water Quality and Conservation in the Pearl River Delta, Ministry of Education, Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resources, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, China
| | - Xudong Wei
- Key Laboratory of Water Quality and Conservation in the Pearl River Delta, Ministry of Education, Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resources, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, China
| | - Yeliang Huang
- Key Laboratory of Water Quality and Conservation in the Pearl River Delta, Ministry of Education, Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resources, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, China
| | - Changzhi Chen
- Key Laboratory of Water Quality and Conservation in the Pearl River Delta, Ministry of Education, Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resources, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, China
| | - Wenli Lin
- Key Laboratory of Water Quality and Conservation in the Pearl River Delta, Ministry of Education, Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resources, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, China
| | - Nan Chen
- Key Laboratory of Water Quality and Conservation in the Pearl River Delta, Ministry of Education, Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resources, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, China
| | - Tangfu Xiao
- Key Laboratory of Water Quality and Conservation in the Pearl River Delta, Ministry of Education, Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resources, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, China; State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, China
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5
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Wei X, Wang J, She J, Sun J, Liu J, Wang Y, Yang X, Ouyang Q, Lin Y, Xiao T, Tsang DCW. Thallium geochemical fractionation and migration in Tl-As rich soils: The key controls. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 784:146995. [PMID: 33905923 DOI: 10.1016/j.scitotenv.2021.146995] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Revised: 03/13/2021] [Accepted: 04/03/2021] [Indexed: 06/12/2023]
Abstract
Thallium (Tl) pollution caused by mining and processing of Tl-enriched ores has become an increasing concern. This study explored the geochemical fractionation and vertical transfer of Tl in a soil profile (200 cm) from a representative Tl-As mineralized area, Southwest China. The results showed that the soils were heavily enriched by Tl and As, with concentration ranging from 3.91-17.3 and 1830-8840 mg/kg (6.79 and 2973 mg/kg in average), respectively. Approximately 50% of Tl occurred in geochemically mobile fractions in the topsoil, wherein the reducible fraction was the most enriched fraction. Further characterization using LA-ICP-MS and TEM revealed that enriched Tl and As in soils were mainly inherited from the weathering of mine tailing piles upstream. XPS characterization indicated that Fe oxides herein may play a critical role in the oxidation of Tl(I) to Tl(III) which provoked further adsorption of Tl onto Fe oxides, thereby facilitating Tl enrichment in the reducible fraction. The findings highlight that the pivotal role of Fe oxides from mineralized area in the co-mobility and migration of Tl and As in the depth profile.
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Affiliation(s)
- Xudong Wei
- Key Laboratory of Water Quality and Conservation in the Pearl River Delta, Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resource, School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, China; Department of Agronomy, Food, Natural resources, Animals and Environment (DAFNAE), University of Padua, Agripolis Campus, Viale dell'Università, 16, 35020 Legnaro, PD, Italy
| | - Jin Wang
- Key Laboratory of Water Quality and Conservation in the Pearl River Delta, Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resource, School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, China
| | - Jingye She
- Key Laboratory of Water Quality and Conservation in the Pearl River Delta, Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resource, School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, China
| | - Jing Sun
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China
| | - Juan Liu
- Key Laboratory of Water Quality and Conservation in the Pearl River Delta, Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resource, School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, China.
| | - Yuxuan Wang
- Key Laboratory of Water Quality and Conservation in the Pearl River Delta, Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resource, School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, China
| | - Xiao Yang
- Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
| | - Qi''en Ouyang
- Key Laboratory of Water Quality and Conservation in the Pearl River Delta, Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resource, School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, China
| | - Yuyang Lin
- Key Laboratory of Water Quality and Conservation in the Pearl River Delta, Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resource, School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, China
| | - Tangfu Xiao
- Key Laboratory of Water Quality and Conservation in the Pearl River Delta, Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resource, School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, China
| | - Daniel C W Tsang
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
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6
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Yin M, Sun J, He H, Liu J, Zhong Q, Zeng Q, Huang X, Wang J, Wu Y, Chen D. Uranium re-adsorption on uranium mill tailings and environmental implications. JOURNAL OF HAZARDOUS MATERIALS 2021; 416:126153. [PMID: 34492934 DOI: 10.1016/j.jhazmat.2021.126153] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2021] [Revised: 05/15/2021] [Accepted: 05/15/2021] [Indexed: 06/13/2023]
Abstract
Uranium mill tailings (UMTs) are one critical source of environmental U pollution. Leaching test has been extensively used to reveal U release capacity and mechanism from UMTs, while little attention has been paid to the effects of re-adsorption process on U release. In this study, the role of U re-adsorption behaviors during leaching test with UMTs was comprehensively investigated. Through paired data on mineralogical composition and aqueous U speciation, the influence of environmentally relevant factors on U re-absorption capacity and mechanism on UMTs with different particle sizes was revealed. Significant amounts of U re-adsorption were observed and primarily attributed to the adsorption on chlorite, albite and muscovite as well as combined reduction-sequestration by muscovite. Uranium re-adsorption predominantly occurred via inner-sphere complexation and surface precipitation depending on leachant pH. Coexisting sulfate or phosphate could further enhance U re-adsorption. The enhanced re-adsorption from sulfate occurred when inner-sphere complexation governed the re-adsorption process. These findings suggest that the environmental hazards and ecological risks of the U containing (waste) solids might have been underestimated due to the ignorance of the re-adsorption process, since the re-adsorbed U could be easily re-mobilized. The insights from this study are also helpful in developing effective in-situ remediation strategies.
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Affiliation(s)
- Meiling Yin
- Key Laboratory of Water Quality and Conservation in the Pearl River Delta, Ministry of Education, School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, China; School of Environment and Energy, South China University of Technology, Guangzhou 510006, China
| | - Jing Sun
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China
| | - Hongping He
- Guangdong Provincial Key Laboratory of Mineral Physics and Materials, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China
| | - Juan Liu
- Key Laboratory of Water Quality and Conservation in the Pearl River Delta, Ministry of Education, School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, China
| | - Qiaohui Zhong
- Key Laboratory of Water Quality and Conservation in the Pearl River Delta, Ministry of Education, School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, China
| | - Qingyi Zeng
- School of Resource Environment and Safety Engineering, University of South China, Hengyang 421001, China
| | - Xianfeng Huang
- School of Life and Environmental Science, Wenzhou University, Wenzhou 325035, China
| | - Jin Wang
- Key Laboratory of Water Quality and Conservation in the Pearl River Delta, Ministry of Education, School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, China; Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resources, Guangzhou 510006, China.
| | - Yingjuan Wu
- Key Laboratory of Water Quality and Conservation in the Pearl River Delta, Ministry of Education, School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, China
| | - Diyun Chen
- Key Laboratory of Water Quality and Conservation in the Pearl River Delta, Ministry of Education, School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, China; Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resources, Guangzhou 510006, China
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7
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Abstract
Deep eutectic solvents (DESs) have emerged as promising green solvents, due to their versatility and properties such as high biodegradability, inexpensiveness, ease of preparation and negligible vapor pressure. Thus, DESs have been used as sustainable media and green catalysts in many chemical processes. On the other hand, lignocellulosic biomass as an abundant source of renewable carbon has received ample interest for the production of biobased chemicals. In this review, the state of the art of the catalytic use of DESs in upgrading the biomass-related substances towards biofuels and value-added chemicals is presented, and the gap in the knowledge is indicated to direct the future research.
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8
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Wang J, She J, Zhou Y, Tsang DCW, Beiyuan J, Xiao T, Dong X, Chen Y, Liu J, Yin M, Wang L. Microbial insights into the biogeochemical features of thallium occurrence: A case study from polluted river sediments. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 739:139957. [PMID: 32544689 DOI: 10.1016/j.scitotenv.2020.139957] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Revised: 06/02/2020] [Accepted: 06/02/2020] [Indexed: 06/11/2023]
Abstract
Thallium (Tl) is a trace element with extreme toxicity. Widespread Tl pollution in riverine systems, mainly due to escalating mining and smelting activities of Tl-bearing sulfide minerals, has attracted increasing attention. Insights into the function of the microbial communities with advanced characterization tools are critical for understanding the biogeochemical cycle of Tl. Herein, microbial communities and their adaptive evolution strategies in river sediments from a representative Tl-bearing pyrite mine area in southern China were profiled via 16S rRNA gene sequence analysis and shotgun metagenomic analysis. In total, 64 phyla and 778 genera of microorganisms were observed in the studied sediments. The results showed that pH, Tl, Pb, Zn and total organic carbon (TOC) had a significant influence on microbial community structure. Some important reductive microorganisms (such as Erysipelothrix, Geobacter, desulfatiferula, desulfatihabadium and fusibacter) were involved in the biogeochemical cycle of Tl. The ruv, rec, ars and other resistance genes enhanced the tolerance of microorganisms to Tl. The study suggested that relevant C, N and S cycle genes were the main metabolic paths of microorganisms surviving in the high Tl-polluted environment. The findings were critical for establishment, operation and regulation in the microbial treatment of Tl containing or related wastewater.
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Affiliation(s)
- Jin Wang
- Institute of Environmental Research at Greater Bay, Key Laboratory of Water Quality and Conservation in the Pearl River Delta, Ministry of Education, Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resources, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, China
| | - Jingye She
- Institute of Environmental Research at Greater Bay, Key Laboratory of Water Quality and Conservation in the Pearl River Delta, Ministry of Education, Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resources, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, China
| | - Yuchen Zhou
- Institute of Environmental Research at Greater Bay, Key Laboratory of Water Quality and Conservation in the Pearl River Delta, Ministry of Education, Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resources, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, China
| | - Daniel C W Tsang
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
| | - Jingzi Beiyuan
- School of Environment and Chemical Engineering, Foshan University, Foshan, Guangdong, China
| | - Tangfu Xiao
- Institute of Environmental Research at Greater Bay, Key Laboratory of Water Quality and Conservation in the Pearl River Delta, Ministry of Education, Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resources, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, China
| | - Xinjiao Dong
- School of Life & Environmental Science, Wenzhou University, Wenzhou 325027, China
| | - Yongheng Chen
- Institute of Environmental Research at Greater Bay, Key Laboratory of Water Quality and Conservation in the Pearl River Delta, Ministry of Education, Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resources, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, China
| | - Juan Liu
- Institute of Environmental Research at Greater Bay, Key Laboratory of Water Quality and Conservation in the Pearl River Delta, Ministry of Education, Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resources, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, China; Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China.
| | - Meiling Yin
- Institute of Environmental Research at Greater Bay, Key Laboratory of Water Quality and Conservation in the Pearl River Delta, Ministry of Education, Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resources, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, China
| | - Lulu Wang
- Institute of Environmental Research at Greater Bay, Key Laboratory of Water Quality and Conservation in the Pearl River Delta, Ministry of Education, Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resources, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, China
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9
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Li T, Berberich J, Sahle-Demessie E, Varughese E. A disposable acetylcholine esterase sensor for As(III) determination in groundwater matrix based on 4-acetoxyphenol hydrolysis. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2019; 11:5203-5213. [PMID: 32021658 PMCID: PMC6997941 DOI: 10.1039/c9ay01199d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
There is a lack of field compatible analytical method for the speciation of As(III) to characterize groundwater pollution at anthropogenic sites. To address this issue, an inhibition-based acetylcholine esterase (AchE) sensor was developed to determine As(III) in groundwater. 4-Acetoxyphenol was employed to develop an amperometric assay for AchE activity. This assay was used to guide the fabrication of an AchE sensor with screen-printed carbon electrode. An As(III) determination protocol was developed based on the pseudo-irreversible inhibition mechanism. The analysis has a dynamic range of 2-500 μM (150 - 37,500 μg L-1) for As(III). The sensor exhibited the same dynamic range and sensitivity in a synthetic groundwater matrix. The electrode was stable for at least 150 days at 22 ± 2 °C.
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Affiliation(s)
- Tao Li
- National Risk Management Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency, Cincinnati, Ohio, 45268, USA
| | - Jason Berberich
- Department of Chemical, Paper and Biomedical Engineering, Miami University, Oxford, Ohio, 45056, USA
| | - Endalkachew Sahle-Demessie
- National Risk Management Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency, Cincinnati, Ohio, 45268, USA
| | - Eunice Varughese
- National Risk Management Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency, Cincinnati, Ohio, 45268, USA
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Wang X, Sun J, Wu L, Xu L, Zhou Y, Rao Z, Jin J, Liu X. Is fish bone subfossil a good archive of heavy metal pollution on Nandao Island, South China Sea? MARINE POLLUTION BULLETIN 2019; 143:175-186. [PMID: 31789153 DOI: 10.1016/j.marpolbul.2019.04.036] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Revised: 04/13/2019] [Accepted: 04/14/2019] [Indexed: 06/10/2023]
Abstract
To examine whether historical fish bones can record the magnitude of heavy metal pollution, we analyzed up to 700 years old fish bone remains extracted from an ornithogenic sediment profile on Nandao Island, South China Sea. Bulk sediments and subfossil fish bones were analyzed for elemental and mineralogical composition, as well as stable carbon and nitrogen isotopes. The results showed that pre-1850 CE fish bones experienced significant diagenesis, and could not be used to reconstruct historical record of heavy metal pollution. Fish bone diagenesis was mainly attributed to the erosion from guano in sediment profile. In contrast, the fish bones from in post-1850 CE time were well preserved and could provide useful information on historical pollution loads over the past 160 years. Since 1850 CE, relatively high concentrations of heavy metals from anthropogenic sources, especially Zn, were recorded in fish bone subfossils on Nandao Island, South China Sea.
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Affiliation(s)
- Xueying Wang
- Institute of Polar Environment & Anhui Key Laboratory of Polar Environment and Global Change, School of Earth and Space Sciences, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Jing Sun
- School of Earth Sciences, University of Western Australia, 35 Stirling Highway, Perth, WA 6009, Australia
| | - Libin Wu
- Institute of Polar Environment & Anhui Key Laboratory of Polar Environment and Global Change, School of Earth and Space Sciences, University of Science and Technology of China, Hefei, Anhui 230026, China; Institute of Surface-Earth System Science, Tianjin University, Tianjin 300072, China
| | - Liqiang Xu
- School of Resources and Environmental Engineering, Hefei University of Technology, Hefei, Anhui 230009, China
| | - Yongli Zhou
- Institute of Polar Environment & Anhui Key Laboratory of Polar Environment and Global Change, School of Earth and Space Sciences, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Zixuan Rao
- Institute of Polar Environment & Anhui Key Laboratory of Polar Environment and Global Change, School of Earth and Space Sciences, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Jing Jin
- Institute of Polar Environment & Anhui Key Laboratory of Polar Environment and Global Change, School of Earth and Space Sciences, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Xiaodong Liu
- Institute of Polar Environment & Anhui Key Laboratory of Polar Environment and Global Change, School of Earth and Space Sciences, University of Science and Technology of China, Hefei, Anhui 230026, China.
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11
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Altunay N, Elik A, Gürkan R. Innovative and practical deep eutectic solvent based vortex assisted microextraction procedure for separation and preconcentration of low levels of arsenic and antimony from sample matrix prior to analysis by hydride generation-atomic absorption spectrometry. Food Chem 2019; 293:378-386. [PMID: 31151625 DOI: 10.1016/j.foodchem.2019.05.019] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2018] [Revised: 04/30/2019] [Accepted: 05/02/2019] [Indexed: 11/16/2022]
Abstract
Considering the negative impacts on human health and the environment, determinations of arsenic (As) and antimony (Sb), is of unquestionable importance. The present study describes the development of innovative and practical deep eutectic solvent (DES) based vortex assisted microextraction (DES-VAME) method for preconcentration of As and Sb from environmental waters, honey and rice prior to analysis by hydride generation-atomic absorption spectrometry (HG-AAS). The use of As(III) and Sb(III) in presence of dithizone at pH 10.5 by means of donor-acceptor mechanism were decided as analytes. Total As and Sb were determined after reduction process. The analytical properties obtained following optimization were as follows. Limit of detection (LOD), precision (as RSD%), recoveries and enhancement factor for As and Sb were calculated as 7.5 ng L-1/15.6 ng L-1, 2.1% /2.7%, 93.5%/96.2% and 104/85, respectively. Following validation with certified reference material, the method was successfully applied to the analysis of real samples.
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Affiliation(s)
- Nail Altunay
- Cumhuriyet University, Faculty of Sciences, Department of Chemistry, TR-58140 Sivas, Turkey.
| | - Adil Elik
- Cumhuriyet University, Faculty of Sciences, Department of Chemistry, TR-58140 Sivas, Turkey
| | - Ramazan Gürkan
- Cumhuriyet University, Faculty of Sciences, Department of Chemistry, TR-58140 Sivas, Turkey
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12
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Sun J, Bostick BC, Mailloux BJ, Jamieson J, Yan B, Pitiranggon M, Chillrud SN. Arsenic mobilization from iron oxides in the presence of oxalic acid under hydrodynamic conditions. CHEMOSPHERE 2018; 212:219-227. [PMID: 30144683 PMCID: PMC6431252 DOI: 10.1016/j.chemosphere.2018.08.058] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Revised: 08/04/2018] [Accepted: 08/13/2018] [Indexed: 05/28/2023]
Abstract
Oxalic acid potentially enhances pump-and-treat for groundwater As remediation by accelerating mobilization. This study examines how oxalic acid mobilizes As from Fe(III)-oxide coated sand under hydrodynamic conditions. Four columns were packed with metal-substituted ferrihydrite or goethite to 1% Fe, presorbed to 50% As surface coverage, and reacted with pH = 2.2 artificial groundwater amended with 10 mM oxalic acid at 1 m day-1. Arsenic elution was affected by both As and Fe speciation. Although the As(V) columns experienced faster substrate dissolution, As(V) elution was delayed by re-adsorption, whereas As(III) elution was rapid due to pH decrease that prevented re-adsorption. Cr-ferrihydrite and Ni-goethite dissolved both effectively initially but then diverged. The Cr-ferrihydrite columns experienced continuous stoichiometric Fe and Cr release, and As release could be sustained. The Ni-goethite columns initially experienced nonstoichiometric Fe and Ni release, and As release was extensive. Such release, however, was not sustained. We hypothesized that Ni-goethite contained sites with distinct reactivity, and oxalic acid targeted readily-dissolved, sorption-dense sites. Our data indicate that oxalic acid-enhanced pump-and-treat methods would be easier to apply to aquifers dominated by As(III), requiring less amendment to be injected; such oxalic acid-enhanced methods remove reactive sediment Fe and As, potentially preventing future groundwater contamination.
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Affiliation(s)
- Jing Sun
- Lamont-Doherty Earth Observatory, Columbia University, 61 Route 9W, Palisades, NY 10964, United States; School of Earth Sciences, University of Western Australia, 35 Stirling Highway, Perth, WA 6009, Australia.
| | - Benjamin C Bostick
- Lamont-Doherty Earth Observatory, Columbia University, 61 Route 9W, Palisades, NY 10964, United States
| | - Brian J Mailloux
- Department of Environmental Sciences, Barnard College, 3009 Broadway, New York, NY 10027, United States
| | - James Jamieson
- School of Earth Sciences, University of Western Australia, 35 Stirling Highway, Perth, WA 6009, Australia
| | - Beizhan Yan
- Lamont-Doherty Earth Observatory, Columbia University, 61 Route 9W, Palisades, NY 10964, United States
| | - Masha Pitiranggon
- Lamont-Doherty Earth Observatory, Columbia University, 61 Route 9W, Palisades, NY 10964, United States
| | - Steven N Chillrud
- Lamont-Doherty Earth Observatory, Columbia University, 61 Route 9W, Palisades, NY 10964, United States.
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13
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Sun J, Frommer H, Siade AJ, Chillrud SN, Mailloux BJ, Bostick BC. Model-Based Analysis of Arsenic Immobilization via Iron Mineral Transformation under Advective Flows. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2018; 52:9243-9253. [PMID: 30039966 PMCID: PMC6429028 DOI: 10.1021/acs.est.8b01762] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Recent laboratory studies have demonstrated that coinjection of nitrate and Fe(II) (as ferrous sulfate) to As-bearing sediments can produce an Fe mineral assemblage containing magnetite capable of immobilizing advected As under a relatively wide range of aquifer conditions. This study combined laboratory findings with process-based numerical modeling approaches, to quantify the observed Fe mineral (trans)formation and concomitant As partitioning dynamics and to assess potential nitrate-Fe(II) remediation strategies for field implementation. The model development was guided by detailed solution and sediment data from our well-controlled column experiment. The modeling results demonstrated that the fate of As during the experiment was primarily driven by ferrihydrite formation and reductive transformation and that different site densities were identified for natural and neoformed ferrihydrite to explain the observations both before and after nitrate-Fe(II) injection. Our results also highlighted that when ferrihydrite was nearing depletion, As immobilization ultimately relied on the presence of magnetite. On the basis of the column model, field-scale predictive simulations were conducted to illustrate the feasibility of the nitrate-Fe(II) strategy for intercepting advected As from a plume. The predictive simulations, which suggested that long-term As immobilization was feasible, favored a scenario that maintains high dissolved Fe(II) concentration during injection periods and thereby converts ferrihydrite to magnetite.
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Affiliation(s)
- Jing Sun
- School of Earth Sciences, University of Western Australia, 35 Stirling Highway, Perth, Western Australia 6009, Australia
- CSIRO Land and Water, Private Bag No. 5, Wembley, Western Australia 6913, Australia
- Lamont-Doherty Earth Observatory, Columbia University, 61 Route 9W, Palisades, New York 10964, United States
| | - Henning Frommer
- School of Earth Sciences, University of Western Australia, 35 Stirling Highway, Perth, Western Australia 6009, Australia
- CSIRO Land and Water, Private Bag No. 5, Wembley, Western Australia 6913, Australia
- National Centre for Groundwater Research and Training, Adelaide, South Australia 5001, Australia
- Corresponding Author Phone: +61 8 93336272; Fax: +61 8 9333 6499;
| | - Adam J. Siade
- School of Earth Sciences, University of Western Australia, 35 Stirling Highway, Perth, Western Australia 6009, Australia
- CSIRO Land and Water, Private Bag No. 5, Wembley, Western Australia 6913, Australia
- National Centre for Groundwater Research and Training, Adelaide, South Australia 5001, Australia
| | - Steven N. Chillrud
- Lamont-Doherty Earth Observatory, Columbia University, 61 Route 9W, Palisades, New York 10964, United States
| | - Brian J. Mailloux
- Department of Environmental Sciences, Barnard College, 3009 Broadway, New York, New York 10027, United States
| | - Benjamin C. Bostick
- Lamont-Doherty Earth Observatory, Columbia University, 61 Route 9W, Palisades, New York 10964, United States
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Sun J, Mailloux BJ, Chillrud SN, van Geen A, Thompson A, Bostick BC. Simultaneously Quantifying Ferrihydrite and Goethite in Natural Sediments Using the Method of Standard Additions with X-ray Absorption Spectroscopy. CHEMICAL GEOLOGY 2018; 476:248-259. [PMID: 29353912 PMCID: PMC5771421 DOI: 10.1016/j.chemgeo.2017.11.021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
The presence of ferrihydrite in sediments/soils is critical to the cycling of iron (Fe) and many other elements but difficult to quantify. Extended X-ray absorption fine structure (EXAFS) spectroscopy has been used to speciate Fe in the solid phase, but this method is thought to have difficulties in distinguishing ferrihydrite from goethite and other minerals. In this study, both conventional EXAFS linear combination fitting (LCF) and the method of standard-additions are applied to the same samples in attempt to quantify ferrihydrite and goethite more rigorously. Natural aquifer sediments from Bangladesh and the United States were spiked with known quantities of ferrihydrite, goethite and magnetite, and analyzed by EXAFS. Known mineral mixtures were also analyzed. Evaluations of EXAFS spectra of mineral references and EXAFS-LCF fits on various samples indicate that ferrihydrite and microcrystalline goethite can be distinguished and quantified by EXAFS-LCF but that the choice of mineral references is critical to yield consistent results. Conventional EXAFS-LCF and the method of standard-additions both identified appreciable amount of ferrihydrite in Bangladesh sediments that were obtained from a low-arsenic Pleistocene aquifer. Ferrihydrite was also independently detected by sequential extraction and 57Fe Mӧssbauer spectroscopy. These observations confirm the accuracy of conventional EXAFS-LCF and demonstrate that combining EXAFS with additions of reference materials provides a more robust means of quantifying short-range-ordered minerals in complex samples.
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Affiliation(s)
- Jing Sun
- Lamont-Doherty Earth Observatory, PO Box 1000, 61 Route 9W, Palisades, NY 10964, USA
- Department of Earth and Environmental Sciences, Columbia University, Mail Code 5505, New York, NY 10027, USA
- School of Earth Sciences, University of Western Australia, 35 Stirling Highway, Perth, WA 6009, Australia
- Corresponding authors. Sun: Phone: (+61) 8 9333 6011; Fax: (+61) 8 9333 6499; ; Bostick: Phone: (+1) 845 365 8659; Fax: (+1) 845 365 8155;
| | - Brian J. Mailloux
- Department of Environmental Sciences, Barnard College, 3009 Broadway, New York, NY 10027, USA
| | - Steven N. Chillrud
- Lamont-Doherty Earth Observatory, PO Box 1000, 61 Route 9W, Palisades, NY 10964, USA
| | - Alexander van Geen
- Lamont-Doherty Earth Observatory, PO Box 1000, 61 Route 9W, Palisades, NY 10964, USA
| | - Aaron Thompson
- Department of Crop and Soil Sciences, University of Georgia, Athens, GA 30602, USA
| | - Benjamin C. Bostick
- Lamont-Doherty Earth Observatory, PO Box 1000, 61 Route 9W, Palisades, NY 10964, USA
- Corresponding authors. Sun: Phone: (+61) 8 9333 6011; Fax: (+61) 8 9333 6499; ; Bostick: Phone: (+1) 845 365 8659; Fax: (+1) 845 365 8155;
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15
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Lin J, Sun Q, Ding S, Wang D, Wang Y, Tsang DCW. First observation of labile arsenic stratification in aluminum sulfate-amended sediments using high resolution Zr-oxide DGT. THE SCIENCE OF THE TOTAL ENVIRONMENT 2017; 609:304-310. [PMID: 28753505 DOI: 10.1016/j.scitotenv.2017.07.165] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2017] [Revised: 07/18/2017] [Accepted: 07/18/2017] [Indexed: 06/07/2023]
Abstract
Arsenic contamination in sediments has received increasing attention because it may be released to the water and threaten aquatic organisms. In this study, aluminum sulfate (ALS) was used to immobilize As in sediments through dosage-series and time-series experiments. Diffusive gradients in thin films (DGT) was used to obtain labile As at a vertically 2.0mm resolution. Our results indicated that a "static" layer with extremely low labile As concentration (minimally 0.13mgL-1) with weak variation (<30% RSD) formed within the top 12mm sediment layer at the dosage of 6-12ALS/Asmobile (kmolmol-1, Asmobile means the total mobile As in top 40mm sediment) and on days 30-80 after amendment at the dosage of 9 ALS/Asmobile. The maximum labile As decreased from 1.83 to 0.99μgL-1 and from 1.96 to 1.20μgL-1 in the dosage-series (3-12 ALS/Asmobile) and time-series (10-80days) experiments, respectively, while the depths showing the maximal concentrations moved deeper from 22 to 34mm and 20 to 32mm in the sediments. It implied a reduced upward diffusion potential of labile As to the static layer in deeper sediments. Both distribution coefficient for As between sediment solid pool and pore water (Kd) and the adsorption rate constant (k1) consistently increased, reflecting that As release from sediment solid became increasingly difficult with the progress of ALS immobilization. The results of this millimeter-scale investigation showed that ALS could efficiently immobilize As in sediments under simulated conditions.
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Affiliation(s)
- Juan Lin
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Qin Sun
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing 210098, China
| | - Shiming Ding
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China.
| | - Dan Wang
- Shanghai Waterway Engineering Design and Consulting Co., Ltd., Shanghai 200120, China
| | - Yan Wang
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Daniel C W Tsang
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, China
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16
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Nguyen Van T, Osanai Y, Do Nguyen H, Kurosawa K. Arsenic Speciation and Extraction and the Significance of Biodegradable Acid on Arsenic Removal-An Approach for Remediation of Arsenic-Contaminated Soil. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2017; 14:ijerph14090990. [PMID: 32962319 PMCID: PMC5615527 DOI: 10.3390/ijerph14090990] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/21/2017] [Revised: 08/26/2017] [Accepted: 08/28/2017] [Indexed: 11/16/2022]
Abstract
A series of arsenic remediation tests were conducted using a washing method with biodegradable organic acids, including oxalic, citric and ascorbic acids. Approximately 80% of the arsenic in one sample was removed under the effect of the ascorbic and oxalic acid combination, which was roughly twice higher than the effectiveness of the ascorbic and citric acid combination under the same conditions. The soils treated using biodegradable acids had low remaining concentrations of arsenic that are primarily contained in the crystalline iron oxides and organic matter fractions. The close correlation between extracted arsenic and extracted iron/aluminum suggested that arsenic was removed via the dissolution of Fe/Al oxides in soils. The fractionation of arsenic in four contaminated soils was investigated using a modified sequential extraction method. Regarding fractionation, we found that most of the soil contained high proportions of arsenic (As) in exchangeable fractions with phosphorus, amorphous oxides, and crystalline iron oxides, while a small amount of the arsenic fraction was organic matter-bound. This study indicated that biodegradable organic acids can be considered as a means for arsenic-contaminated soil remediation.
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Affiliation(s)
- Thinh Nguyen Van
- Graduate School of Integrated Sciences for Global Society, Kyushu University, Fukuoka 819-0395, Japan;
- Correspondence: or
| | - Yasuhito Osanai
- Graduate School of Integrated Sciences for Global Society, Kyushu University, Fukuoka 819-0395, Japan;
| | - Hai Do Nguyen
- Soil Science Department, Faculty of Land Management, Vietnam National University of Agriculture, Hanoi 100-000, Vietnam;
| | - Kiyoshi Kurosawa
- Institute of Tropical Agriculture, Kyushu University, Fukuoka 812-8581, Japan;
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Sun J, Chillrud SN, Mailloux BJ, Bostick BC. In Situ Magnetite Formation and Long-Term Arsenic Immobilization under Advective Flow Conditions. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2016; 50:10162-71. [PMID: 27533278 PMCID: PMC5725337 DOI: 10.1021/acs.est.6b02362] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
In situ precipitation of magnetite and other minerals potentially sequesters dissolved arsenic (As) in contaminated aquifers. This study examines As retention and transport in aquifer sediments using a multistage column experiment in which magnetite and other minerals formed from added nitrate and ferrous iron (Fe). Sediments were collected from the Dover Municipal Landfill Superfund site. Prior to nitrate-Fe(II) addition, As was not effectively retained within the sediments in the column. The combination of nitrate (10 mM) and Fe(II) (4 mM), resulted in mineral precipitation and rapidly decreased effluent As concentrations to <10 μg L(-1). Mineralogical analyses of sectioned replicate columns using sequential extractions, magnetic susceptibility and X-ray absorption spectroscopy indicate that magnetite and ferrihydrite formed in the column following nitrate-Fe(II) addition. This magnetite persisted in the column even as conditions became reducing, whereas ferrihydrite was transformed to more stable Fe oxides. This magnetite incorporated As into its structure during precipitation and subsequently adsorbed As. Adsorption to the minerals kept effluent As concentrations <10 μg L(-1) for more than 100 pore volumes despite considerable Fe reduction. The results indicate that it should be feasible to produce an in situ reactive filter by nitrate-Fe(II) injection.
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Affiliation(s)
- Jing Sun
- Department of Earth and Environmental Sciences, Columbia University, Mail Code 5505, New York, New York 10027, United States
- Lamont-Doherty Earth Observatory, PO Box 1000, 61 Route 9W, Palisades, New York 10964, United States
| | - Steven N. Chillrud
- Lamont-Doherty Earth Observatory, PO Box 1000, 61 Route 9W, Palisades, New York 10964, United States
| | - Brian J. Mailloux
- Department of Environmental Sciences, Barnard College, 3009 Broadway, New York, New York 10027, United States
| | - Benjamin C. Bostick
- Lamont-Doherty Earth Observatory, PO Box 1000, 61 Route 9W, Palisades, New York 10964, United States
- Corresponding Author: Phone: (+1) 845-365-8659; fax: (+1) 845-365-8155;
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