101
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Rathi B, Jamieson J, Sun J, Siade AJ, Zhu M, Cirpka OA, Prommer H. Process-based modeling of arsenic(III) oxidation by manganese oxides under circumneutral pH conditions. WATER RESEARCH 2020; 185:116195. [PMID: 32738605 DOI: 10.1016/j.watres.2020.116195] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Revised: 07/05/2020] [Accepted: 07/16/2020] [Indexed: 05/12/2023]
Abstract
Numerous experimental studies have identified a multi-step reaction mechanism to control arsenite (As(III)) oxidation by manganese (Mn) oxides. The studies highlighted the importance of edge sites and intermediate processes, e.g., surface passivation by reaction products. However, the identified reaction mechanism and controlling factors have rarely been evaluated in a quantitative context. In this study, a process-based modeling framework was developed to delineate and quantify the relative contributions and rates of the different processes affecting As(III) oxidation by Mn oxides. The model development and parameterization were constrained by experimental observations from literature studies involving environmentally relevant Mn oxides at circumneutral pH using both batch and stirred-flow reactors. Our modeling results highlight the importance of a transitional phase, solely evident in the stirred-flow experiments, where As(III) oxidation gradually shifts from fast reacting Mn(IV) to slowly reacting Mn(III) edge sites. The relative abundance of these edge sites was the most important factor controlling the oxidation rate, whereas surface passivation restricted oxidation only in the stirred-flow experiment. The Mn(III) edge sites were demonstrated to play a crucial role in the oxidation and therefore in controlling the long-term fate of As. This study provided an improved understanding of Mn oxide reactivity and the significance in the cycling of redox-sensitive metal(loid)s in the environment.
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Affiliation(s)
- Bhasker Rathi
- Center for Applied Geoscience, University of Tübingen, Tübingen, Germany; School of Earth Sciences, University of Western Australia, Crawley WA 6009, Australia; CSIRO Land and Water, Private Bag No. 5, Wembley WA 6913, Australia
| | - James Jamieson
- School of Earth Sciences, University of Western Australia, Crawley WA 6009, Australia; CSIRO Land and Water, Private Bag No. 5, Wembley WA 6913, Australia
| | - Jing Sun
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China; School of Earth Sciences, University of Western Australia, Crawley WA 6009, Australia; CSIRO Land and Water, Private Bag No. 5, Wembley WA 6913, Australia.
| | - Adam J Siade
- School of Earth Sciences, University of Western Australia, Crawley WA 6009, Australia; CSIRO Land and Water, Private Bag No. 5, Wembley WA 6913, Australia; National Centre for Groundwater Research and Training (NCGRT), Australia
| | - Mengqiang Zhu
- Department of Ecosystem Science and Management, University of Wyoming, Laramie WY 82071 United States
| | - Olaf A Cirpka
- Center for Applied Geoscience, University of Tübingen, Tübingen, Germany
| | - Henning Prommer
- School of Earth Sciences, University of Western Australia, Crawley WA 6009, Australia; CSIRO Land and Water, Private Bag No. 5, Wembley WA 6913, Australia; National Centre for Groundwater Research and Training (NCGRT), Australia.
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102
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Gao X, Peng Y, Guo L, Wang Q, Guan CY, Yang F, Chen Q. Arsenic adsorption on layered double hydroxides biochars and their amended red and calcareous soils. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2020; 271:111045. [PMID: 32778322 DOI: 10.1016/j.jenvman.2020.111045] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 06/29/2020] [Accepted: 07/01/2020] [Indexed: 06/11/2023]
Abstract
Highly efficient amendments for controlling arsenic (As) pollution in soils are imperative to improve soil quality and enhance food production. In the present study, corn stalk biochar was functionalized with three kinds of layered double hydroxides (i.e., Mg-Al-LDH, Zn-Al-LDH, and Cu-Al-LDH) using a simple co-precipitation method. The synthesized LDH biochar composites (LDH@BCs) exhibited better adsorption capacity and affinity for As due to their enhanced anion exchange capacity and reactive surface hydroxyl groups identified by XRD, FTIR and XPS. Arsenic (As) bioavailability and leaching characteristics of spiked red and calcareous soils (150 mg As/kg) amended with or without LDH@BCs were investigated using soil column. The Zn-Al-LDH@BC decreased the As (V) migration and increased pak choi (Brassica chinensis L.) growth in both red and calcareous soil. These results indicated that LDH modified biochar is an effective way to overcome the shortfalls of unmodified biochar in mitigating the As contamination and provide a basis for further exploring the potential of biochar-based soil amendments for environmental remediation.
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Affiliation(s)
- Xing Gao
- Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing, 100193, China
| | - Yutao Peng
- Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing, 100193, China
| | - Lili Guo
- National Engineering Laboratory for Site Remediation Technologies, Beijing, 100015, China
| | - Qiong Wang
- Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences/National Engineering Laboratory for Improving Quality of Arable Land, Beijing, 100081, China
| | - Chung-Yu Guan
- Graduate Institute of Environmental Engineering, National Taiwan University, Taipei, 106, Taiwan, ROC
| | - Fan Yang
- School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin, 150030, China
| | - Qing Chen
- Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing, 100193, China.
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103
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Li N, Zhou Y, Liu J, Tsang DCW, Wang J, She J, Zhou Y, Yin M, Chen Z, Chen D. Persistent thallium contamination in river sediments, source apportionment and environmental implications. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 202:110874. [PMID: 32619890 DOI: 10.1016/j.ecoenv.2020.110874] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Revised: 05/25/2020] [Accepted: 06/07/2020] [Indexed: 06/11/2023]
Abstract
The adverse impacts of detrimental thallium (Tl) contamination are of increasing concerns to sustainable development. Herein, the contents, distributions and sources of Tl and potential toxic elements (PTEs) (Pb, As, Cr, Cu, Ni, Co, Sb, Cd and U) were investigated in sediments collected in Gaofeng River, which has been contaminated by long-term mining activities, located in Yunfu City, Southern China. Results indicated that excessive Tl levels were found in sediments (1.80-16.70 mg/kg). Sequential extraction procedure indicated that despite a large amount of Tl entrapped in residual fraction, a significant level of Tl (0.28-2.34 mg/kg) still exhibited in geochemically labile fractions, which was easy for Tl mobilization and availability. Pb isotope tracing method further confirmed that the pyrite exploitations may be the prime contaminated contributor (47-76%) to these sediments. These findings highlight that it is essential to establish more effective measures for Tl contamination control and call for engineered remediation countermeasures towards polluted river sediments.
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Affiliation(s)
- Nuo Li
- 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, Institute of Environmental Research at Greater Bay, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China
| | - Yuchen Zhou
- 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, Institute of Environmental Research at Greater Bay, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, 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, Institute of Environmental Research at Greater Bay, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China; Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hong Kong, China.
| | - Daniel C W Tsang
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hong Kong, 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, Institute of Environmental Research at Greater Bay, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China; Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resources, Guangzhou, 510006, China.
| | - 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, Institute of Environmental Research at Greater Bay, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China
| | - Yuting Zhou
- 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, Institute of Environmental Research at Greater Bay, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, 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, Institute of Environmental Research at Greater Bay, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China
| | - Zirong 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, Institute of Environmental Research at Greater Bay, 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, Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resources, Institute of Environmental Research at Greater Bay, 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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104
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Brotin T, Berthault P, Pitrat D, Mulatier JC. Selective Capture of Thallium and Cesium by a Cryptophane Soluble at Neutral pH. J Org Chem 2020; 85:9622-9630. [PMID: 32589033 DOI: 10.1021/acs.joc.0c00950] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
We report in this article the synthesis of an asymmetrical cryptophane derivative (possessing only C3-symmetry) bearing three phenol groups and three other carboxylic acid functions, each of these groups on the aromatic rings. Thanks to isothermal titration calorimetry experiments, we show that this compound binds large monovalent cations, such as Cs+ and Tl+, with a binding constant significantly lower than its congeners bearing a larger number of phenol groups grafted on the benzene rings. However, higher selectivity for Cs+ and Tl+ was observed with this compound since it does not show any affinity for other alkali cations. More importantly, due to the greater solubility of this derivative in pure water, we show for the first time that effective thallium(I) complexation takes place at neutral pH. This result demonstrates that cryptophane derivatives decorated with a higher number of phenol groups are promising host molecules for removing traces of thallium(I) from aqueous phases at neutral pH or above.
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Affiliation(s)
- Thierry Brotin
- University Claude Bernard Lyon 1, ENS de Lyon, CNRS UMR 5182, Laboratoire de Chimie, 69342 Lyon, France
| | - Patrick Berthault
- University Paris Saclay, CEA, CNRS, Nanoscience and Innovation for Materials, Biomedicine and Energy, 91191 Gif-sur-Yvette, France
| | - Delphine Pitrat
- University Claude Bernard Lyon 1, ENS de Lyon, CNRS UMR 5182, Laboratoire de Chimie, 69342 Lyon, France
| | - Jean-Christophe Mulatier
- University Claude Bernard Lyon 1, ENS de Lyon, CNRS UMR 5182, Laboratoire de Chimie, 69342 Lyon, France
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105
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Zou Y, Cheng H, Wang H, Huang R, Xu Y, Jiang J, He Q, Liu C, Liu J, Xiong J, Yao J, Huangfu X, Ma J. Thallium(I) Oxidation by Permanganate and Chlorine: Kinetics and Manganese Dioxide Catalysis. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:7205-7216. [PMID: 32310655 DOI: 10.1021/acs.est.0c00068] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The oxidation of the toxic heavy metal thallium(I) (Tl(I)) is an efficient way to enhance Tl removal from water and wastewater. However, few studies have focused on the kinetics of Tl(I) oxidation in water, especially at environmentally relevant pH values. Therefore, the kinetics and mechanisms of Tl(I) oxidation by the common agents KMnO4 and HOCl under environmentally relevant pH condition were explored in the present study. The results indicated that the pH-dependent oxidation of Tl(I) by KMnO4 exhibited second-order kinetics under alkaline conditions (pH 8-10) with the main active species being TlOH, while the reaction could be characterized by autocatalysis at pH 4-6, and Mn(III) might also play an essential role in the MnO2 catalysis. Furthermore, a two-electron transfer mechanism under alkaline conditions was preliminarily proposed by using linear free energy relationships and X-ray photoelectron spectroscopy (XPS) analysis. Distinctively, the reaction rate of Tl(I) oxidation by HOCl decreased with increasing pH, and protonated chlorine might be the main active species. Moreover, the Tl(I)-HOCl reaction could be regarded as first order with respect to Tl(I), but the order with respect to HOCl was variable. Significant catalysis by MnO2 could also be observed in the oxidation of Tl(I) by HOCl, mainly due to the vacancies on MnO2 as active sites for sorbing Tl. This study elucidates the oxidation characteristics of thallium and establishes a theoretical foundation for the oxidation processes in thallium removal.
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Affiliation(s)
- Yijie Zou
- Key Laboratory of Eco-environments in Three Gorges Reservoir Region, Ministry of Education, College of Environment and Ecology, Chongqing University, Chongqing 400044, China
| | - Haijun Cheng
- State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China
| | - Hainan Wang
- Key Laboratory of Eco-environments in Three Gorges Reservoir Region, Ministry of Education, College of Environment and Ecology, Chongqing University, Chongqing 400044, China
| | - Ruixing Huang
- Key Laboratory of Eco-environments in Three Gorges Reservoir Region, Ministry of Education, College of Environment and Ecology, Chongqing University, Chongqing 400044, China
| | - Yanghui Xu
- Key Laboratory of Eco-environments in Three Gorges Reservoir Region, Ministry of Education, College of Environment and Ecology, Chongqing University, Chongqing 400044, China
| | - Jin Jiang
- Institute of Environmental and Ecological Engineering, Guangdong University of Technology, Guangzhou 510006, China
| | - Qiang He
- Key Laboratory of Eco-environments in Three Gorges Reservoir Region, Ministry of Education, College of Environment and Ecology, Chongqing University, Chongqing 400044, China
| | - Caihong Liu
- Key Laboratory of Eco-environments in Three Gorges Reservoir Region, Ministry of Education, College of Environment and Ecology, Chongqing University, Chongqing 400044, China
| | - Juchao Liu
- Key Laboratory of Eco-environments in Three Gorges Reservoir Region, Ministry of Education, College of Environment and Ecology, Chongqing University, Chongqing 400044, China
| | - Jiaming Xiong
- Key Laboratory of Eco-environments in Three Gorges Reservoir Region, Ministry of Education, College of Environment and Ecology, Chongqing University, Chongqing 400044, China
| | - Jinni Yao
- Key Laboratory of Eco-environments in Three Gorges Reservoir Region, Ministry of Education, College of Environment and Ecology, Chongqing University, Chongqing 400044, China
| | - Xiaoliu Huangfu
- Key Laboratory of Eco-environments in Three Gorges Reservoir Region, Ministry of Education, College of Environment and Ecology, Chongqing University, Chongqing 400044, China
| | - Jun Ma
- State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China
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106
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Zhou Y, Wang L, Xiao T, Chen Y, Beiyuan J, She J, Zhou Y, Yin M, Liu J, Liu Y, Wang Y, Wang J. Legacy of multiple heavy metal(loid)s contamination and ecological risks in farmland soils from a historical artisanal zinc smelting area. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 720:137541. [PMID: 32145625 DOI: 10.1016/j.scitotenv.2020.137541] [Citation(s) in RCA: 70] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2020] [Revised: 02/22/2020] [Accepted: 02/23/2020] [Indexed: 05/16/2023]
Abstract
Farmland soil contamination of heavy metal(loid)s (HM) derived from smelting activities is a global concern, owing to its potential threat for human health through food chain. This study aims to evaluate total contents and bioavailability of HMs (Pb, Zn, Tl, Cd, Cu, As, Ag, Co, Cr and Ni) in farmland soils distributed over ten different villages from a former artisanal zinc smelting area in the northwest Guizhou province, China. The results showed that most of the studied soils still exhibited exceptionally high enrichment of Pb, Zn, Cd and As. High levels of bioavailable HMs were also observed in some samples, which may enter the human food chain through agricultural activities. Further analyses by Scanning Transmission Electron Microscopy - Energy Dispersive Spectroscopy (STEM-EDS), X-ray photoelectron spectroscopy (XPS) and X-ray diffraction (XRD) showed the presence of Zn smelting by-products such as Fe oxides, ZnO and PbSO4 even in nanoscale particles retained by the soils. Elemental mapping by EDS confirmed a close association of the studied HMs with the smelting waste particles. All these results signify that high levels of HM-contamination from historical artisanal zinc smelting activities still persist and threaten the health of local residents, despite the fact that the major industrial-derived-contamination period ended >15 years ago. Our findings highlight pivotal concerns in similar artisanal-smelting-affected farmland soils of suspected contamination, due to less-expected toxic elements such as Tl, which may cause high ecological health risks.
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Affiliation(s)
- Yuting Zhou
- Institute of Environmental Research at Greater Bay, Innovation Center and Key Laboratory of Waters Quality & Conservation in the Pearl River Delta, Ministry of Education, Guangzhou University, Guangzhou 510006, China
| | - Lulu Wang
- Institute of Environmental Research at Greater Bay, Innovation Center and Key Laboratory of Waters Quality & Conservation in the Pearl River Delta, Ministry of Education, Guangzhou University, Guangzhou 510006, China
| | - Tangfu Xiao
- Institute of Environmental Research at Greater Bay, Innovation Center and Key Laboratory of Waters Quality & Conservation in the Pearl River Delta, Ministry of Education, Guangzhou University, Guangzhou 510006, China
| | - Yongheng Chen
- Institute of Environmental Research at Greater Bay, Innovation Center and Key Laboratory of Waters Quality & Conservation in the Pearl River Delta, Ministry of Education, Guangzhou University, Guangzhou 510006, China
| | - Jingzi Beiyuan
- School of Environment and Chemical Engineering, Foshan University, Foshan, Guangdong, China
| | - Jingye She
- Institute of Environmental Research at Greater Bay, Innovation Center and Key Laboratory of Waters Quality & Conservation in the Pearl River Delta, Ministry of Education, Guangzhou University, Guangzhou 510006, China
| | - Yuchen Zhou
- Institute of Environmental Research at Greater Bay, Innovation Center and Key Laboratory of Waters Quality & Conservation in the Pearl River Delta, Ministry of Education, Guangzhou University, Guangzhou 510006, China
| | - Meiling Yin
- Institute of Environmental Research at Greater Bay, Innovation Center and Key Laboratory of Waters Quality & Conservation in the Pearl River Delta, Ministry of Education, Guangzhou University, Guangzhou 510006, China
| | - Juan Liu
- Institute of Environmental Research at Greater Bay, Innovation Center and Key Laboratory of Waters Quality & Conservation in the Pearl River Delta, Ministry of Education, Guangzhou University, Guangzhou 510006, China; Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China.
| | - Yanyi Liu
- Institute of Environmental Research at Greater Bay, Innovation Center and Key Laboratory of Waters Quality & Conservation in the Pearl River Delta, Ministry of Education, Guangzhou University, Guangzhou 510006, China
| | - Yuxuan Wang
- Institute of Environmental Research at Greater Bay, Innovation Center and Key Laboratory of Waters Quality & Conservation in the Pearl River Delta, Ministry of Education, Guangzhou University, Guangzhou 510006, China
| | - Jin Wang
- Institute of Environmental Research at Greater Bay, Innovation Center and Key Laboratory of Waters Quality & Conservation in the Pearl River Delta, Ministry of Education, Guangzhou University, Guangzhou 510006, China.
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107
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Gao C, Cao Y, Lin J, Fang H, Luo Z, Lin Y, Zhao H, Huang Y. Insights into facile synthesized pomelo biochar adsorbing thallium: potential remediation in agricultural soils. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:22698-22707. [PMID: 32323226 DOI: 10.1007/s11356-020-08595-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Accepted: 03/25/2020] [Indexed: 06/11/2023]
Abstract
Little information is available on thallium (Tl) adsorption onto fruit-derived biochar. In this study, pomelo peel and waste pomelo were thus chosen to prepare two kinds of biochars recorded as PPB and WPB. The two produced biochars subsequently evaluated their potential remediation of thallium (Tl) contamination in agricultural soils by their Tl adsorption capacity. Results showed that the two pomelo-derived biochars presented obvious microporous structure and rich oxygen-containing functional group, supported by the observant data of specific surface area, scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), and X-ray diffraction (XRD). Furthermore, Langmuir isothermal adsorption model can better fit the adsorption behavior of thallium onto PPB and WPB, and the subsequent maximum adsorption capacity was 4283.9 μg g-1 and 5286.0 μg g-1, respectively. In addition, the pseudo-second-order kinetic model could well fit the kinetic behavior of thallium adsorption onto PPB and WPB, indicating that the process is accompanied by chemical adsorption. Meanwhile, in agricultural soils, PPB and WPB can be used as environmentally friendly adsorbents to remediate Tl contamination due to their pH increase of the tested soils and their comparable adsorption ability of Tl. The obtained findings can provide insights into comprehensively developed fruit-derived biochar technology to remediate Tl contamination in agricultural soils.
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Affiliation(s)
- Chunbai Gao
- College of Food and Biological Engineering, Jimei University, Xiamen, 361021, China
| | - Yinglan Cao
- College of Port and Environmental Engineering, Jimei University, Xiamen, 361021, China.
| | - Jianqing Lin
- College of Port and Environmental Engineering, Jimei University, Xiamen, 361021, China
| | - Hongda Fang
- College of Port and Environmental Engineering, Jimei University, Xiamen, 361021, China
| | - Zhuanxi Luo
- Key Laboratory of Urban Environment and Health, Institute of Urban Environment,, Chinese Academy of Sciences, Xiamen, 361021, China
| | - Yang Lin
- College of Food and Biological Engineering, Jimei University, Xiamen, 361021, China
| | - Han Zhao
- College of Food and Biological Engineering, Jimei University, Xiamen, 361021, China
| | - Yicheng Huang
- College of Food and Biological Engineering, Jimei University, Xiamen, 361021, China
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108
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Liu J, Ren J, Zhou Y, Tsang DCW, Lin J, Yuan W, Wang J, Yin M, Wu Y, Xiao T, Chen Y. Effects and mechanisms of mineral amendment on thallium mobility in highly contaminated soils. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2020; 262:110251. [PMID: 32090881 DOI: 10.1016/j.jenvman.2020.110251] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Revised: 01/28/2020] [Accepted: 02/05/2020] [Indexed: 06/10/2023]
Abstract
Thallium (Tl) is an extremely toxic element, whose toxicity is even higher than mercury, arsenic, and cadmium. It is of great significance to hinder the migration and transfer of Tl from soils to the plants. A synthetic mineral amendment (SMA), mainly composed of different silicates, was evaluated for its effects on the transformation and retention of Tl in two typical highly Tl-contaminated soils from Southwest China. The results indicated that the addition of mineral amendment increased the soil of the pH by 0.46-2.13 units and distinctly reduced the content of active thallium in the soils. The extent of Tl reduction was related to the morphological characteristics of the original soil In particular, the application of the mineral amendment transformed 25.8-52.5% of the active Tl fractions in the soils to the residual fraction at 60 d. Adding mineral amendment to the soils can provide conditions to facilitate Tl to enter the silicate crystal lattice. The results of XPS evidenced that the proportion of Tl(I) in the soil was greatly reduced after adding the mineral amendment.
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Affiliation(s)
- Juan Liu
- Institute of Environmental Research at Greater Bay, Key Laboratory of Water Quality and Conservation in the Pearl River Delta, Ministry of Education, 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.
| | - Jiamin Ren
- Institute of Environmental Research at Greater Bay, Key Laboratory of Water Quality and Conservation in the Pearl River Delta, Ministry of Education, 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, 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
| | - Jingfen Lin
- Institute of Environmental Research at Greater Bay, Key Laboratory of Water Quality and Conservation in the Pearl River Delta, Ministry of Education, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, China
| | - Wenhuan Yuan
- Institute of Environmental Research at Greater Bay, Key Laboratory of Water Quality and Conservation in the Pearl River Delta, Ministry of Education, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, China
| | - Jin Wang
- Institute of Environmental Research at Greater Bay, Key Laboratory of Water Quality and Conservation in the Pearl River Delta, Ministry of Education, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, China; Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resources, Guangzhou, 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, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, China
| | - Yang Wu
- Institute of Environmental Research at Greater Bay, Key Laboratory of Water Quality and Conservation in the Pearl River Delta, Ministry of Education, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 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, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 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, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, China
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109
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Wang N, Su Z, Deng N, Qiu Y, Ma L, Wang J, Chen Y, Hu K, Huang C, Xiao T. Removal of thallium(I) from aqueous solutions using titanate nanomaterials: The performance and the influence of morphology. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 717:137090. [PMID: 32065899 DOI: 10.1016/j.scitotenv.2020.137090] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Revised: 01/15/2020] [Accepted: 02/01/2020] [Indexed: 06/10/2023]
Abstract
Thallium (Tl) pollution has attracted environmental attention due to its high toxicity, thus the cleanup of Tl from the environment is of significance. Titanate nanomaterials (TNMs) with different morphologies can be synthesized via a hydrothermal reaction under different conditions but the knowledge of the Tl(I) removal by them is limited. Our results indicated that TNM prepared at 130 °C exhibited a nanotubular appearance and a longer reaction time resulted in the formation of perfect nanotube, while that prepared at 180 °C exhibited a nanowire-like arrangement. The nanotubular and nanowire-like TNMs possessed approximately excellent Tl(I) adsorption capacities, wide pH, and temperature application ranges but different adsorption kinetics. Inorganic ions influenced the Tl(I) removal and the inhibiting effect of heavy metal ions followed the sequence Pb(II) > Cu(II) > Cd(II) > Zn(II). The anti-interference ability and selectivity of wire-like TNMs for Tl(I) removal were higher than those of tubular TNMs. High Tl(I) uptakes of tubular and wire-like TNMs were driven by the electrostatic attraction, ion exchange with Na+/H+, and complexation with -ONa functional groups in the interlayers and Ti-OH on the surfaces of TNMs as well as microprecipitation; while their adsorption configurations were different. TNMs are promising for potential applications in Tl(I) elimination from wastewater due to the high adsorption capacity and regenerability. This work indicates that TNMs synthesized under different conditions have the similar Tl(I) adsorption performances and the preparation of TNMs used for Tl(I) removal has an undemanding synthesis condition.
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Affiliation(s)
- Nana Wang
- Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, China
| | - Zebin Su
- Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, China
| | - Nairui Deng
- Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, China
| | - Yuyin Qiu
- Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, China
| | - Liang Ma
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China
| | - Jianqiao Wang
- Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, China
| | - Yuxiao Chen
- Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, China
| | - Kaimei Hu
- Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, China
| | - Chujie Huang
- Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, China
| | - Tangfu Xiao
- Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, China.
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Wei X, Zhou Y, Tsang DCW, Song L, Zhang C, Yin M, Liu J, Xiao T, Zhang G, Wang J. Hyperaccumulation and transport mechanism of thallium and arsenic in brake ferns (Pteris vittata L.): A case study from mining area. JOURNAL OF HAZARDOUS MATERIALS 2020; 388:121756. [PMID: 31818671 DOI: 10.1016/j.jhazmat.2019.121756] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2019] [Revised: 11/23/2019] [Accepted: 11/24/2019] [Indexed: 06/10/2023]
Abstract
Both thallium (Tl) and arsenic (As) bear severe toxicity. Brake fern (Pteris vittata L.) is well-known for its hyperaccumulation capacity of As, yet its role on Tl accumulation remains unknown. Herein, brake ferns growing near an As tailing site in Yunnan, Southwestern China are for the first time discovered as a co-hyperaccumulator of both Tl and As. The results showed that the brake ferns extracted both As and Tl efficiently from the soils into the fronds. The studied ferns growing on Tl and As co-polluted soils were found to accumulate extremely high levels of both As (7215-11110 mg/kg) and Tl (6.47-111 mg/kg). Conspicuously high bio-accumulation factor (BCF) was observed for As (7.8) and even higher for Tl (28.4) among these co-hyperaccumulators, wherein the contents of As and Tl in contaminated soils were 1240 ± 12 and 3.91 ± 0.01 mg/kg, respectively. The applied advanced characterization techniques (e.g. transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS)) indicated a preferential uptake of Tl(I) while simultaneous accumulation of As (III) and As(V) from the Tl(I)/Tl(III)-As (III)/As(V) co-existent rhizospheric soils. The findings benefit the phytoremediation practice and pose implications for managing and restoring Tl-As co-contaminated soils in other countries.
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Affiliation(s)
- Xudong Wei
- Institute of Environmental Research at Greater Bay, Key Laboratory of Water Quality and Conservation in the Pearl River Delta, Ministry of Education, and School of Environmental Science and Engineering, Guangzhou University, 510006 Guangzhou, China
| | - Yuting Zhou
- Institute of Environmental Research at Greater Bay, Key Laboratory of Water Quality and Conservation in the Pearl River Delta, Ministry of Education, and School of Environmental Science and Engineering, Guangzhou University, 510006 Guangzhou, China
| | - Daniel C W Tsang
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
| | - Lan Song
- Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China
| | - Chaosheng Zhang
- International Network for Environment and Health, School of Geography and Archaeology & Ryan Institute, National University of Ireland, Galway, Ireland
| | - Meiling Yin
- Institute of Environmental Research at Greater Bay, Key Laboratory of Water Quality and Conservation in the Pearl River Delta, Ministry of Education, and School of Environmental Science and Engineering, Guangzhou University, 510006 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, and School of Environmental Science and Engineering, Guangzhou University, 510006 Guangzhou, China; Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, 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, and School of Environmental Science and Engineering, Guangzhou University, 510006 Guangzhou, China
| | - Gaosheng Zhang
- Institute of Environmental Research at Greater Bay, Key Laboratory of Water Quality and Conservation in the Pearl River Delta, Ministry of Education, and School of Environmental Science and Engineering, Guangzhou University, 510006 Guangzhou, China
| | - Jin Wang
- Institute of Environmental Research at Greater Bay, Key Laboratory of Water Quality and Conservation in the Pearl River Delta, Ministry of Education, and School of Environmental Science and Engineering, Guangzhou University, 510006 Guangzhou, China; Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resources, 510006 Guangzhou, China.
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111
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Duan W, Wang Y, Li Z, Fu G, Mao L, Song Y, Qu Y, Ye L, Zhou Q, Yang F, Hu Z, Xu S. Thallium exposure at low concentration leads to early damage on multiple organs in children: A case study followed-up for four years. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 258:113319. [PMID: 31882189 DOI: 10.1016/j.envpol.2019.113319] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Revised: 09/12/2019] [Accepted: 09/27/2019] [Indexed: 06/10/2023]
Abstract
Thallium (TI) is one of the most toxic heavy metals and priority pollutant metals. The emerging TI environmental pollution worldwide has posed a great threat to human health. However, based on the World Health Organization (WHO), the risk and severity of adverse health effects of TI in the range of 5-500 μg/L are uncertain. Moreover, evidence regarding the adverse impacts of TI on children's health is still insufficient. Herein, we aim to investigate the early adverse effects of TI on children's health and provide references for the WHO to establish stricter safety limits of TI. From 2015 to 2019, urinary TI and many clinical laboratory parameters related to blood routine, hepatic, renal, myocardial, coagulation function and serum electrolyte were measured in six children aged 1-9 years. The urinary TI concentration ranged from 13.4 μg/L to 60.1 μg/L with a mean of 36.1 μg/L and a median of 34.8 μg/L in six children in 2015. Although only four children felt a little poor appetite, several laboratory abnormalities indicated early damage in liver, renal, and myocardial functions in all children in 2015. After treatment and following up for four years, although the children's TI concentration decreased below 5 μg/L, their liver and renal functions did not completely recover, and their myocardial function worsened. Results indicated that impaired liver, renal, and myocardial functions were closely associated with elevated urinary TI concentration in children. Considering the increasing use of TI in high-technology industries and emerging TI environmental-contamination zones worldwide, establishing stricter safety limits of TI and paying more attention to the adverse health effects of TI on children are urgently required. SUMMARY: We found that a relatively low concentration of thallium (13.4 μg/L to 60.1 μg/L) impaired liver, renal, and myocardial function in six children. After treatment and following up these children for four years, although their urinary TI concentration decreased below 5 μg/L, their liver and renal functions did not completely recover, and their myocardial function worsened.
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Affiliation(s)
- Weixia Duan
- Center of Laboratory Medicine, Chongqing Prevention and Treatment Center for Occupational Diseases, Chongqing, People's Republic of China
| | - Yongyi Wang
- Department of Occupational Disease and Poisoning, Chongqing Prevention and Treatment Center for Occupational Diseases, Chongqing, People's Republic of China
| | - Zhiqiang Li
- Center of Laboratory Medicine, Chongqing Prevention and Treatment Center for Occupational Diseases, Chongqing, People's Republic of China
| | - Guanyan Fu
- Center of Laboratory Medicine, Chongqing Prevention and Treatment Center for Occupational Diseases, Chongqing, People's Republic of China
| | - Longchun Mao
- Center of Laboratory Medicine, Chongqing Prevention and Treatment Center for Occupational Diseases, Chongqing, People's Republic of China
| | - Yunbo Song
- Center of Laboratory Medicine, Chongqing Prevention and Treatment Center for Occupational Diseases, Chongqing, People's Republic of China
| | - Yaping Qu
- Center of Laboratory Medicine, Chongqing Prevention and Treatment Center for Occupational Diseases, Chongqing, People's Republic of China
| | - Lvsu Ye
- Department of Occupational Disease and Poisoning, Chongqing Prevention and Treatment Center for Occupational Diseases, Chongqing, People's Republic of China
| | - Qu Zhou
- Center of Laboratory Medicine, Chongqing Prevention and Treatment Center for Occupational Diseases, Chongqing, People's Republic of China
| | - Fucheng Yang
- Center of Laboratory Medicine, Chongqing Prevention and Treatment Center for Occupational Diseases, Chongqing, People's Republic of China
| | - Zhide Hu
- Department of Laboratory Medicine, The Affiliated Hospital of Inner Mongolia Medical University, Hohhot, People's Republic of China
| | - Shangcheng Xu
- Center of Laboratory Medicine, Chongqing Prevention and Treatment Center for Occupational Diseases, Chongqing, People's Republic of China; Key Laboratory of Biorheological Science and Technology, Ministry of Education, Bioengineering College of Chongqing University, Chongqing, People's Republic of China.
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112
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Wang J, Zhou Y, Dong X, Yin M, Tsang DCW, Sun J, Liu J, Song G, Liu Y. Temporal sedimentary record of thallium pollution in an urban lake: An emerging thallium pollution source from copper metallurgy. CHEMOSPHERE 2020; 242:125172. [PMID: 31675584 DOI: 10.1016/j.chemosphere.2019.125172] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Revised: 10/13/2019] [Accepted: 10/20/2019] [Indexed: 06/10/2023]
Abstract
Thallium (Tl) is an extremely toxic metal with high risk. Sediment samples from a well dated sediment core retrieved from a heavily polluted urban lake were measured to assess the magnitude of Tl pollution and reveal its transfer mechanisms within the lake. The results show that the lake has experienced serious Tl pollution during the past 60 years, owing to a large influx of Tl-bearing wastes mostly from a neighboring copper (Cu) smelter. The Tl contents in the sediment core at different depths generally correlated positively with the production scale of Cu smelting activities in the past. Further mineralogical analysis on the electrostatic precipitator dust from the Cu smelter and highly-polluted samples from the sediment core by electronic microscopy and X-ray diffraction suggested that Tl was primarily bound to quartz and aluminosilicates. Large quantities of Tl were also observed in diatom frustules collected from the sediments, suggesting a potentially significant role of biogenic silicates in the uptake and transfer of Tl in the sediment-water system. The findings indicate a new and emerging pollution source of thallium arising from copper metallurgy activities. The results also highlight the necessity of strengthened monitoring and regulations towards Tl pollution in environmental systems impacted by Cu smelting activities in China and other nations.
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Affiliation(s)
- Jin Wang
- Institute of Environmental Research at Greater Bay, Innovation Center and Key Laboratory of Waters Quality & 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, 510006, China
| | - Yuting Zhou
- Institute of Environmental Research at Greater Bay, Innovation Center and Key Laboratory of Waters Quality & 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, 510006, China
| | - Xuhui Dong
- School of Geographical Sciences, Guangzhou University, Guangzhou, 510006, China
| | - Meiling Yin
- Institute of Environmental Research at Greater Bay, Innovation Center and Key Laboratory of Waters Quality & 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, 510006, China
| | - Daniel C W Tsang
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
| | - Jing Sun
- School of Earth Sciences, University of Western Australia, Perth, WA, 6009, Australia
| | - Juan Liu
- Institute of Environmental Research at Greater Bay, Innovation Center and Key Laboratory of Waters Quality & 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, 510006, China; Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China.
| | - Gang Song
- Institute of Environmental Research at Greater Bay, Innovation Center and Key Laboratory of Waters Quality & 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, 510006, China
| | - Yonghui Liu
- Institute of Environmental Research at Greater Bay, Innovation Center and Key Laboratory of Waters Quality & 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, 510006, China
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113
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Liu J, Yin M, Xiao T, Zhang C, Tsang DCW, Bao Z, Zhou Y, Chen Y, Luo X, Yuan W, Wang J. Thallium isotopic fractionation in industrial process of pyrite smelting and environmental implications. JOURNAL OF HAZARDOUS MATERIALS 2020; 384:121378. [PMID: 31606707 DOI: 10.1016/j.jhazmat.2019.121378] [Citation(s) in RCA: 67] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2019] [Revised: 09/30/2019] [Accepted: 09/30/2019] [Indexed: 06/10/2023]
Abstract
Thallium (Tl) is typical rare element with severe toxicity comparable to Hg and Pb. To track Tl pollution, isotopic fractionation of Tl was evaluated during pyrite smelting for sulfuric acid production. Large variations in Tl isotope compositions were observed among the pyrite ore (PO) and its four different smelting wastes. The starting raw PO had an ε205Tl value of +1.28. The fluidized-bed furnace slag generated by high-temperature smelting had the heaviest ε205Tl (+16.24) in the system. Meanwhile, the boiler fly ash (ε205Tl = +8.34), cyclone fly ash (ε205Tl = +2.17), and electrostatic precipitation fly ash (ε205Tl = -1.10), with decreasing grain sizes during the treatment processes, were characterized by elevated levels of Tl contents and substantial enrichment in the light Tl isotopes relative to the furnace slag. Further calculation and high-resolution transmission electron microscopy indicated that Tl isotope fractionation could be governed by both Rayleigh-type fractionation and adsorption of volatilized Tl by particles of various grain sizes. According to the substantial differences in the PO from its smelting wastes and the measurement precision of isotopic fractionation, it is suggested that Tl isotopes can serve as a new tool for tracing pollution of Tl.
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Affiliation(s)
- Juan Liu
- Institute of Environmental Research at Greater Bay, 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; 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, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, 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, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China
| | - Chaosheng Zhang
- International Network for Environment and Health, School of Geography and Archaeology & Ryan Institute, National University of Ireland, Galway, Ireland
| | - Daniel C W Tsang
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
| | - Zhi'an Bao
- State Key Laboratory of Continental Dynamics, Department of Geology, Northwest University, Xi'an, 710069, China
| | - Yuting Zhou
- Institute of Environmental Research at Greater Bay, 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
| | - Yongheng Chen
- Institute of Environmental Research at Greater Bay, 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
| | - Xuwen Luo
- Institute of Environmental Research at Greater Bay, 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
| | - Wenhuan Yuan
- Institute of Environmental Research at Greater Bay, 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
| | - Jin Wang
- Institute of Environmental Research at Greater Bay, 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.
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114
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Liu J, Wei X, Zhou Y, Tsang DCW, Bao Z, Yin M, Lippold H, Yuan W, Wang J, Feng Y, Chen D. Thallium contamination, health risk assessment and source apportionment in common vegetables. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 703:135547. [PMID: 31761365 DOI: 10.1016/j.scitotenv.2019.135547] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Revised: 10/29/2019] [Accepted: 11/14/2019] [Indexed: 06/10/2023]
Abstract
As an element with well-known toxicity, excessive thallium (Tl) in farmland soils, may threaten food security and induce extreme risks to human health. Identification of key contamination sources is prerequisite for remediation technologies. This study aims to examine the contamination level, health risks and source apportionment of Tl in common vegetables from typical farmlands distributed over a densely populated residential area in a pyrite mine city, which has been exploiting Tl-bearing pyrite minerals over 50 years. Results showed excessive Tl levels were exhibited in most of the vegetables (0.16-20.33 mg/kg) and alarming health risks may induce from the vegetables via the food chain. Source apportionment of Tl contamination in vegetables was then evaluated by using Pb isotope fingerprinting technique. Both vegetables and soils were characterized with overall low 206Pb/207Pb. This indicated that a significant contribution may be ascribed to the anthropogenic activities involving pyrite deposit exploitation, whose raw material and salgs were featured with lower 206Pb/207Pb. Further calculation by binary mixing model suggested that pyrite mining and smelting activities contributed 54-88% to the thallium contamination in vegetables. The results highlighted that Pb isotope tracing is a suitable technique for source apportionment of Tl contamination in vegetables and prime contamination from pyrite mining/smelting activities urges authorities to initiate proper practices of remediation.
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Affiliation(s)
- 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, 510006 Guangzhou, China; Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China.
| | - Xudong Wei
- 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, 510006 Guangzhou, China
| | - Yuting 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, 510006 Guangzhou, China
| | - Daniel C W Tsang
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
| | - Zhi'an Bao
- State Key Laboratory of Continental Dynamics, Department of Geology, Northwest University, Xi'an 710069, 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, 510006 Guangzhou, China
| | - Holger Lippold
- Helmholtz-Zentrum Dresden-Rossendorf, Institut für Ressourcenökologie, 04318 Leipzig, Germany
| | - Wenhuan Yuan
- 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, 510006 Guangzhou, China
| | - 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, 510006 Guangzhou, China.
| | - Yuexing Feng
- School of Earth and Environmental Sciences, The University of Queensland, QLD 4072, Australia
| | - Diyun 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, 510006 Guangzhou, China
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115
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Aguilar-Carrillo J, Herrera-García L, Reyes-Domínguez IA, Gutiérrez EJ. Thallium(I) sequestration by jarosite and birnessite: Structural incorporation vs surface adsorption. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 257:113492. [PMID: 31744683 DOI: 10.1016/j.envpol.2019.113492] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Revised: 10/11/2019] [Accepted: 10/24/2019] [Indexed: 06/10/2023]
Abstract
Jarosite and birnessite secondary minerals play a pivotal role in the mobility, transport and fate of trace elements in the environment, although geochemical interactions of these compounds with extremely toxic thallium (Tl) remain poorly known. In this study, we investigated the sorption behavior of Tl(I) onto synthetic jarosite and birnessite, two minerals commonly found in soils and sediments as well as in mining-impacted areas where harsh conditions are involved. To achieve this, sorption and desorption experiments were carried out under two different acidic conditions and various Tl(I) concentrations to mimic natural scenarios. In addition, X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM) and inductively coupled plasma (ICP) analyses were conducted to determine the performance of both minerals for Tl(I) sequestration. Our results indicate that both phases can effectively remove aqueous Tl by different sorption mechanisms. Jarosite preferentially incorporates Tl(I) into the structure to form Tl(I)-jarosite and eventually the mineral dorallcharite (TlFe3(SO4)2(OH)6) as increasing amounts of Tl are employed. Birnessite, however, favorably uptakes Tl(I) through an irreversible surface adsorption mechanism, underlining the affinity of Tl for this mineral in the entire concentration range studied (0.5-5 mmol L-1). Lastly, the presence of Tl(I) in conditions where aqueous molar ratio Tl/Mn is ∼0.25 inhibits the formation of birnessite since oxidation of Tl(I) to Tl(III) followed by precipitation of avicennite (Tl2O3) take place. Thus, the present research may provide useful insights on the role of both jarosite and birnessite minerals in Tl environmental cycles.
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Affiliation(s)
- J Aguilar-Carrillo
- CONACyT, Department of Environmental Technology, Institute of Metallurgy, UASLP, 78210, San Luis Potosí, Mexico.
| | - L Herrera-García
- Department of Environmental Technology, Institute of Metallurgy, UASLP, 78210, San Luis Potosí, Mexico.
| | - Iván A Reyes-Domínguez
- CONACyT, Department of Mineral Processing, Institute of Metallurgy, UASLP, 78210, San Luis Potosí, S.L.P., Mexico.
| | - Emmanuel J Gutiérrez
- CONACyT, Department of Materials Engineering, Institute of Metallurgy, UASLP, 78210, San Luis Potosí, S.L.P., Mexico.
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116
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Tang J, Zhang L, Zhang J, Ren L, Zhou Y, Zheng Y, Luo L, Yang Y, Huang H, Chen A. Physicochemical features, metal availability and enzyme activity in heavy metal-polluted soil remediated by biochar and compost. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 701:134751. [PMID: 31710903 DOI: 10.1016/j.scitotenv.2019.134751] [Citation(s) in RCA: 151] [Impact Index Per Article: 37.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Revised: 09/28/2019] [Accepted: 09/29/2019] [Indexed: 05/28/2023]
Abstract
Biochar and compost have been widely used for pollution remediation of heavy metals in soil. However, little research was conducted to explore the efficiency of biochar, compost and their combination to reduce heavy metals availability, and the effects of their additive on soil biological properties are often neglected. Therefore, this study investigated the effects of biochar, compost and their combination on availability of heavy metals, physicochemical features and enzyme activities in soil. Results showed that adding amendments to polluted soil significantly altered soil properties. Compared to the separate addition of biochar or compost, their combined application was more effective to improve soil pH, organic matter (OM), organic carbon (TOC) and available potassium (AK). All amendments significantly decreased the availability of Cd and Zn, but slightly activated As and Cu. In addition, soil enzyme activities were activated by compost and inhibited by biochar, but exhibited highly variable responses to their combinations. Pearson correlation analysis indicated that electrical conductivity (EC) and AK were the most important environmental factors affecting metal availability and soil enzyme activities including dehydrogenase, catalase, β-glucosidase, urease, acid and alkaline phosphatase, arylsulfatase except for protease and invertase. Availability of As, Cu, Cd and Zn affected dehydrogenase, catalase and urease activities. These results indicated that biochar, compost and their combination have significant effects on physicochemical features, metals availability and enzyme activities in heavy metal-polluted soil.
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Affiliation(s)
- Jiayi Tang
- College of Resources and Environment, Hunan Agricultural University, Changsha 410128, China
| | - Lihua Zhang
- College of Resources and Environment, Hunan Agricultural University, Changsha 410128, China
| | - Jiachao Zhang
- College of Resources and Environment, Hunan Agricultural University, Changsha 410128, China.
| | - Liheng Ren
- College of Resources and Environment, Hunan Agricultural University, Changsha 410128, China
| | - Yaoyu Zhou
- College of Resources and Environment, Hunan Agricultural University, Changsha 410128, China.
| | - Yuanyuan Zheng
- College of Resources and Environment, Hunan Agricultural University, Changsha 410128, China
| | - Lin Luo
- College of Resources and Environment, Hunan Agricultural University, Changsha 410128, China
| | - Yuan Yang
- College of Resources and Environment, Hunan Agricultural University, Changsha 410128, China
| | - Hongli Huang
- College of Resources and Environment, Hunan Agricultural University, Changsha 410128, China
| | - Anwei Chen
- College of Resources and Environment, Hunan Agricultural University, Changsha 410128, China
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117
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Removal of Trace Thallium from Industrial Wastewater by Fe0-Electrocoagulation. WATER 2020. [DOI: 10.3390/w12010163] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
As thallium (Tl) is a highly toxic heavy metal, there are compulsory environmental regulations in many countries on minimizing its release. This research investigated the treatment of real industrial wastewater with low Tl(I) concentration by Fe0-electrocoagulation (Fe0-EC) in a batch aeration-forced pump cycle reactor. The effects of pH (7–12), current density (8.3–33.3 mA/cm2), dissolved oxygen (DO) in wastewater, and initial Tl(I) concentration (66–165 µg/L) on Tl(I) removal efficiency were investigated. The removal efficiency of Tl(I) is pH-dependent, to be exact, it increases significantly with pH rising from 8 to 11. Initial pH of influent and DO concentration were the key operation parameters which strongly affect Tl(I) removal. After the water sample with initial Tl(I) concentration of 115 µg/L was treated for 12 min by a single-step process at pH of 11 and current density of 16.7 mA/cm2, the residual Tl(I) concentration was decreased to beneath the emission limit in China (2 µg/L) with a low energy consumption of 0.82 kWh/m3. By prolonging the operation time, the concentration was further reduced to 0.5 µg/L or even lower. The main composition of the flocculent sludges is iron oxyhydroxide, yet its crystal structure varies dependent on pH value which may result in different Tl(I) removal efficiency. Feroxyhyte nanosheets generate in situ by Fe0-EC, which contributes to the rapid and effective removal of Tl(I), while the speedy oxidation under DO-enriched conditions benefits the feroxyhyte formation. The mechanism of Tl(I) removal by Fe0-EC is attributed to the combination of electrostatic attraction and the formation of inner-sphere complexes. As shown in the technical and mechanical studies, Fe0-EC technology is an effective method for low Tl concentration removal from wastewater.
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118
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Lin J, Yin M, Wang J, Liu J, Tsang DCW, Wang Y, Lin M, Li H, Zhou Y, Song G, Chen Y. Geochemical fractionation of thallium in contaminated soils near a large-scale Hg-Tl mineralised area. CHEMOSPHERE 2020; 239:124775. [PMID: 31521931 DOI: 10.1016/j.chemosphere.2019.124775] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Revised: 08/09/2019] [Accepted: 09/04/2019] [Indexed: 06/10/2023]
Abstract
Enriched levels of thallium (Tl) in the environment are not only derived from anthropogenic sources but also have potential natural origins owing to Tl-rich sulphide mineralization. However, little is known regarding the geochemical fractionations of Tl in contaminated soils from geogenic sources. This study aims to reveal the Tl geochemical fractionations in different types of soils from a large-scale independent Tl mine in southwestern China, via a modified Institute for Reference Materials and Measurement (IRMM) sequential extraction (four-step) scheme. The results revealed that a large percentage of Tl was related to the labile portions (including reducible, weak-acid-exchangeable, and oxidizable fraction) of the soils (68.8-367 mg kg-1). Further analyses by Scanning Transmission Electron Microscopy-Energy Dispersive X-ray Spectrometer (STEM-EDS) found that Tl mainly existed in the Fe-containing minerals (such as jarosite and hematite) with fine particles (∼1 μm). These results highlight that, apart from the anthropogenically induced Tl pollution, the naturally occurring Tl contamination in soils may also pose significant risks to human health and ecological safety. Owing to the relatively high mobility and bioavailability of Tl in the labile fractions, it is important to understand geochemical fractionations of this element for alleviating Tl pollution and effective management of naturally occurring Tl contaminated soils.
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Affiliation(s)
- Jingfen 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, Institute of Environmental Research at Greater Bay, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, 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, Institute of Environmental Research at Greater Bay, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, 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, Institute of Environmental Research at Greater Bay, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, 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, Institute of Environmental Research at Greater Bay, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China; Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China.
| | - Daniel C W Tsang
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
| | - Yuxuan 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, Institute of Environmental Research at Greater Bay, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China
| | - Mao 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, Institute of Environmental Research at Greater Bay, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China
| | - Hongchun Li
- Department of Geosciences, National Taiwan University, Taipei, China
| | - Yaoyu Zhou
- College of Resources and Environment, Hunan Agricultural University, Changsha, 410128, China
| | - Gang Song
- 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, Institute of Environmental Research at Greater Bay, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China
| | - Yongheng 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, Institute of Environmental Research at Greater Bay, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China.
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119
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Pan SX, Xie TZ, Xiao TF, Xie JH. Extensive removal of thallium by graphene oxide functionalized with aza-crown ether. RSC Adv 2020; 10:44470-44480. [PMID: 35517178 PMCID: PMC9059138 DOI: 10.1039/d0ra09193f] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Accepted: 11/19/2020] [Indexed: 12/12/2022] Open
Abstract
Thallium (Tl) is a highly toxic heavy metal, and its pollution and remediation in aquatic environments has attracted considerable attention. To reduce or remove Tl pollution in the environment, various strategies have been applied. Graphene oxide (GO) has abundant oxygen-containing functional groups, indicating its high application potential for pollution remediation via methods involving binding to metal ions or positively charged organic molecules or electrostatic interaction and coordination. However, the adsorption of Tl to GO occurs via physical adsorption, for which the adsorption efficiency is low. Therefore, herein, we report a new method to effectively remove Tl pollution in water. We combined GO with aza-crown ether, which enhanced the electronegativity and ability to bind metal ions. The functionalized graphene oxide (FGO) demonstrated high efficiency through a wide pH gradient of 5–10, with a dominant Tl(i) adsorption capacity (112.21 mg g−1) based on the Langmuir model (pH 9.0, adsorbent concentration of 0.8 g L−1). The adsorption of Tl(i) during removal fit a pseudo-second-order kinetic model well. The mechanisms of Tl removal involve physical and chemical adsorption. In summary, our study provides a new method for the detection and treatment of Tl-containing wastewater by using FGO. Thallium (Tl) is a highly toxic heavy metal, and its pollution and remediation in aquatic environments has attracted considerable attention.![]()
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Affiliation(s)
- Shu-Xin Pan
- Key Laboratory for Water Quality and Conservation of the Pearl River Delta
- Ministry of Education
- Guangzhou University
- Guangzhou 510006
- China
| | - Ting-Zheng Xie
- Key Laboratory for Water Quality and Conservation of the Pearl River Delta
- Ministry of Education
- Guangzhou University
- Guangzhou 510006
- China
| | - Tang-Fu Xiao
- Key Laboratory for Water Quality and Conservation of the Pearl River Delta
- Ministry of Education
- Guangzhou University
- Guangzhou 510006
- China
| | - Jie-Hui Xie
- Key Laboratory for Water Quality and Conservation of the Pearl River Delta
- Ministry of Education
- Guangzhou University
- Guangzhou 510006
- China
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120
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Gao X, Peng Y, Zhou Y, Adeel M, Chen Q. Effects of magnesium ferrite biochar on the cadmium passivation in acidic soil and bioavailability for packoi (Brassica chinensis L.). JOURNAL OF ENVIRONMENTAL MANAGEMENT 2019; 251:109610. [PMID: 31585274 DOI: 10.1016/j.jenvman.2019.109610] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2019] [Revised: 09/05/2019] [Accepted: 09/18/2019] [Indexed: 06/10/2023]
Abstract
Biochar (BC) and magnesium ferrite (MF) have been used in effective adsorption of cadmium (Cd) in aqueous environment, whereas little is known about the effect of their composite on Cd adsorption and Cd-contaminated soil remediation. In this study, biochar (BC), magnesium ferrite (MF) and biochar assembled with magnesium ferrite (MB) were prepared for Cd adsorption and then applied in soils (1-2% w/w) to investigate their effects on Cd passivation by performing leaching experiments and early stage seeding growth test for packoi (Brassica chinensis L.). Compared with the BC and MF, the MB showed greater adsorption property for Cd at aqueous solution (31.3 mg/g) and amended soils (1.85 mg/g at 2% applied rate) based on the isotherms studies. Besides, the MB performed the better passivation ability in reduction of the bioavailable Cd and seeding growth experiment. Solid state analysis of the materials before and after leaching indicated that the passivation mechanism may be dominated by ion exchange and surface complexation. Principal component analysis revealed that the soil pH and adsorption capacity had the strong correlation with the contents of bioavailable-Cd and seedling growth. These results indicated that MB could be used as an efficient amendment in Cd contaminated soil for reducing bioavailable Cd concentrations and improving plant growth.
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Affiliation(s)
- Xing Gao
- Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing, 100193, China
| | - Yutao Peng
- Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing, 100193, China; Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
| | - Yaoyu Zhou
- College of Resources and Environment, Hunan Agricultural University, Changsha, 410128, China; Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
| | - Muhammad Adeel
- Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing, 100193, China
| | - Qing Chen
- Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing, 100193, China.
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121
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Liu J, Ren S, Zhou Y, Tsang DCW, Lippold H, Wang J, Yin M, Xiao T, Luo X, Chen Y. High contamination risks of thallium and associated metal(loid)s in fluvial sediments from a steel-making area and implications for environmental management. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2019; 250:109513. [PMID: 31521041 DOI: 10.1016/j.jenvman.2019.109513] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2019] [Revised: 08/23/2019] [Accepted: 09/01/2019] [Indexed: 06/10/2023]
Abstract
Thallium (Tl) is an uncommon toxic element, with an even greater toxicity than that of As, Hg and Cd. Steel-making industry has been identified as an emerging new significant source of Tl contamination in China. This paper presents a pilot investigation of the contamination and geochemical transfer of Tl and associated metal(loid)s in river sediments affected by long-term waste discharge from the steel-making industry. The results uncovered an overall Tl contamination (1.96 ± 0.42 mg/kg) across a sediment profile of approximately 1.5 m in length, even 10 km downstream the steel plant. Highly elevated contents of Pb, Cu, Cd, Zn and Sb were found in the fluvial sediments, displaying strong positive correlations with Tl contents. Elevated levels of geochemically mobile Tl as well as Cd, Zn, Cu and Pb occurred in the fluvial sediments, signifying anthropogenic imprints from steel production activities at high temperature. Levels of contamination and ecological risk were calculated to be moderate to considerable for Tl, Cu, Zn and high to very high for Cd, Pb, Sb. The results highlight that there is a great challenge in view of potentially considerable Tl pollution due to continuous massive steel production in many other parts of China. It is high time to initiate process-based management of Tl contamination control for the ambient aquifer system in the steel-making area.
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Affiliation(s)
- Juan Liu
- Institute of Environmental Research At Greater Bay, Innovation Center and 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.
| | - Shixing Ren
- Institute of Environmental Research At Greater Bay, Innovation Center and 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
| | - Yuting Zhou
- Institute of Environmental Research At Greater Bay, Innovation Center and 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
| | - Daniel C W Tsang
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
| | - Holger Lippold
- Helmholtz-Zentrum Dresden-Rossendorf, Institut für Ressourcenökologie, 04318, Leipzig, Germany
| | - Jin Wang
- Institute of Environmental Research At Greater Bay, Innovation Center and 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.
| | - Meiling Yin
- Institute of Environmental Research At Greater Bay, Innovation Center and 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
| | - Tangfu Xiao
- Institute of Environmental Research At Greater Bay, Innovation Center and 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
| | - Xuwen Luo
- Institute of Environmental Research At Greater Bay, Innovation Center and 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
| | - Yongheng Chen
- Institute of Environmental Research At Greater Bay, Innovation Center and 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
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