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Xu H, Zhang H, Qin C, Li X, Xu D, Zhao Y. Groundwater Cr(VI) contamination and remediation: A review from 1999 to 2022. CHEMOSPHERE 2024; 360:142395. [PMID: 38797207 DOI: 10.1016/j.chemosphere.2024.142395] [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: 09/09/2023] [Revised: 05/13/2024] [Accepted: 05/20/2024] [Indexed: 05/29/2024]
Abstract
Hexavalent chromium (Cr(VI)) contamination of groundwater has traditionally been an environmental issue of great concern due to its bioaccumulative and highly toxic nature. This paper presents a review and bibliometric analysis of the literature on the interest area "Cr(VI) in groundwater" published in the Web of Science Core Collection from 1999 to 2022. First, information on 203 actual Cr(VI)-contaminated groundwater sites around the world was summarized, and the basic characteristics of the sources and concentrations of contamination were derived. 68.95% of the sites were due to human causes and 56.43% of these sites had Cr(VI) concentrations in the range of 0-10 mg/L. At groundwater sites with high Cr(VI) contamination due to natural causes, 75.00% of the sites had Cr(VI) concentrations less than 0.2 mg/L. A total of 936 papers on "Cr(VI) in groundwater" were retrieved for bibliometric analysis: interest in research on Cr(VI) in groundwater has grown rapidly in recent years; 59.4% of the papers were published in the field of environmental sciences. A systematic review of the progress of studies on the Cr(VI) removal/remediation based on reduction, adsorption and biological processes is presented. Out of 666 papers on Cr(VI) removal/remediation, 512, 274, and 75 papers dealt with the topics of reduction, adsorption, and bioremediation, respectively. In addition, several studies have demonstrated the potential applicability of natural attenuation in the remediation of Cr(VI)-contaminated groundwater. This paper will help researchers to understand and investigate methodological strategies to remove Cr(VI) from groundwater in a more targeted and effective manner.
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Affiliation(s)
- Huichao Xu
- Key Laboratory of Groundwater Resources and Environment of Ministry of Education, College of New Energy and Environment, Jilin University, Changchun, 130021, China; National and Local Joint Engineering Laboratory for Petrochemical Contaminated Site Control and Remediation Technology, Jilin University, Changchun, 130021, China; Jilin Provincial Key Laboratory of Water Resources and Environment, College of New Energy and Environment, Jilin University, Changchun, 130021, China
| | - Hui Zhang
- Key Laboratory of Groundwater Resources and Environment of Ministry of Education, College of New Energy and Environment, Jilin University, Changchun, 130021, China; National and Local Joint Engineering Laboratory for Petrochemical Contaminated Site Control and Remediation Technology, Jilin University, Changchun, 130021, China; Jilin Provincial Key Laboratory of Water Resources and Environment, College of New Energy and Environment, Jilin University, Changchun, 130021, China
| | - Chuanyu Qin
- Key Laboratory of Groundwater Resources and Environment of Ministry of Education, College of New Energy and Environment, Jilin University, Changchun, 130021, China; National and Local Joint Engineering Laboratory for Petrochemical Contaminated Site Control and Remediation Technology, Jilin University, Changchun, 130021, China; Jilin Provincial Key Laboratory of Water Resources and Environment, College of New Energy and Environment, Jilin University, Changchun, 130021, China
| | - Xiaoyu Li
- Key Laboratory of Groundwater Resources and Environment of Ministry of Education, College of New Energy and Environment, Jilin University, Changchun, 130021, China; National and Local Joint Engineering Laboratory for Petrochemical Contaminated Site Control and Remediation Technology, Jilin University, Changchun, 130021, China; Jilin Provincial Key Laboratory of Water Resources and Environment, College of New Energy and Environment, Jilin University, Changchun, 130021, China
| | - Dan Xu
- Key Laboratory of Groundwater Resources and Environment of Ministry of Education, College of New Energy and Environment, Jilin University, Changchun, 130021, China; National and Local Joint Engineering Laboratory for Petrochemical Contaminated Site Control and Remediation Technology, Jilin University, Changchun, 130021, China; Jilin Provincial Key Laboratory of Water Resources and Environment, College of New Energy and Environment, Jilin University, Changchun, 130021, China
| | - Yongsheng Zhao
- Key Laboratory of Groundwater Resources and Environment of Ministry of Education, College of New Energy and Environment, Jilin University, Changchun, 130021, China; National and Local Joint Engineering Laboratory for Petrochemical Contaminated Site Control and Remediation Technology, Jilin University, Changchun, 130021, China; Jilin Provincial Key Laboratory of Water Resources and Environment, College of New Energy and Environment, Jilin University, Changchun, 130021, China.
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2
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Huang C, Yang T, Li M, Mai J, Wu S, Li J, Ma G, Liu C, Jia J, Ma J. Generation of hydroxyl radicals via activation of Cr(VI) by UVA-LED for rapid decontamination: The important role of Cr(V). JOURNAL OF HAZARDOUS MATERIALS 2023; 442:129913. [PMID: 36152544 DOI: 10.1016/j.jhazmat.2022.129913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2022] [Revised: 08/19/2022] [Accepted: 09/02/2022] [Indexed: 06/16/2023]
Abstract
Hexavalent chromium (Cr(VI)) was activated by ultraviolet-A light-emitting diode (UVA-LED), resulting in efficient removal of various pollutants, including dye, pharmaceuticals, and pesticides, with pseudo-first-order rate constants of 0.0610-0.159 min-1. Comparatively, UVA-LED or Cr(VI) alone barely degraded selected pollutants. Both HO• and Cr(V) were produced in the UVA-LED/Cr(VI) system based on scavenging and probing experiments, UV-visible and electron spin resonance spectra analysis. HO• was demonstrated to be the dominant reactive species via stepwise regeneration of Cr(V) to Cr(VI). The quantum yield of HO• was determined to be 7.79 × 10-4 mol Es-1 at a Cr(VI) dosage of 0.5 mM and pH of 6.0. Additionally, the degradation efficiency of sulfamethoxazole (SMX) as a model compound decreased linearly as UVA-LED wavelengths increased from 365 to 405 nm, while SMX was barely degraded at visible light irradiation wavelength ranges (449-505 nm). SMX degradation efficiency increased from 71.0 % to 97.5 % as Cr(VI) dosage increased from 0.05 to 0.7 mM. pH displayed a negative impact on SMX degradation with its removal efficiency decreasing from 99.4 % to 13.3 % as pH increased from 3.0 to 9.0. This study first reported that HO• was generated via activation of Cr(VI) by UVA-LED, which is instructive for the removal of pollutants co-existed in chromium-containing wastewater.
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Affiliation(s)
- Cui Huang
- School of Biotechnology and Health Science, Wuyi University, Jiangmen 529020, Guangdong Province, China
| | - Tao Yang
- School of Biotechnology and Health Science, Wuyi University, Jiangmen 529020, Guangdong Province, China.
| | - Mingwei Li
- School of Biotechnology and Health Science, Wuyi University, Jiangmen 529020, Guangdong Province, China
| | - Jiamin Mai
- School of Biotechnology and Health Science, Wuyi University, Jiangmen 529020, Guangdong Province, China
| | - Sisi Wu
- School of Biotechnology and Health Science, Wuyi University, Jiangmen 529020, Guangdong Province, China
| | - Juan Li
- Advanced Interdisciplinary Institute of Environment and Ecology, Beijing Normal University at Zhu Hai, Zhu Hai 519087, China
| | - Guobiao Ma
- School of Biotechnology and Health Science, Wuyi University, Jiangmen 529020, Guangdong Province, China
| | - Changyu Liu
- School of Biotechnology and Health Science, Wuyi University, Jiangmen 529020, Guangdong Province, China
| | - Jianbo Jia
- School of Biotechnology and Health Science, Wuyi University, Jiangmen 529020, Guangdong Province, 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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3
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Dehdar A, Reza Rahmani A, Azarian G, Jamshidi R, Moradi S. Removal of furfural using zero gap electrocoagulation by a scrap iron anode from aqueous solution. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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4
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Amin NK, Nosier SA, Abdel-Aziz MH, Hassan MS, Sedahmed GH, El-Naggar MA. Electrochemical regeneration of hexavalent chromium from aqueous solutions in a gas sparged parallel plate reactor. ENVIRONMENTAL TECHNOLOGY 2022; 43:2405-2417. [PMID: 33494654 DOI: 10.1080/09593330.2021.1881827] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Accepted: 01/18/2021] [Indexed: 06/12/2023]
Abstract
In this study anodic oxidation of Cr2(SO4)3 was carried out in an air-sparged divided parallel plate cell. Variables studied were current density, Cr2(SO4)3 concentration, and superficial air velocity. The rate constant of Cr2(SO4)3 oxidation was found to increase with increasing current density and Cr2(SO4)3 concentration. The effect of air sparging was found to depend on Cr2(SO4)3 concentrations, at high Cr2(SO4)3 concentration (> 0.1 M) air sparging does not affect the rate constant of the reaction denoting that the reaction is charge transfer controlled. As Cr2(SO4)3 concentration decreases below 0.1 M the reaction becomes under mixed diffusion and chemical control and the rate constant increases with increasing air superficial velocity, the lower Cr2(SO4)3 concentration the higher the contribution of diffusion to the reaction rate. The current efficiency of the process ranged from 20 to 85% depending on current density and Cr2(SO4)3 concentration. Electrical energy consumption which ranged from 1.8 to 14.4 kW h/kg of Cr6+ was found to increase with increasing current density and decreases with increasing Cr2(SO4)3 concentration. Air sparging was found to decrease electrical energy consumption in the case of dilute solutions << 0.1 M Cr2(SO4)3.
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Affiliation(s)
- N K Amin
- Chemical Engineering Department, Faculty of Engineering, Alexandria University, Alexandria, Egypt
| | - S A Nosier
- Chemical Engineering Department, Faculty of Engineering, Alexandria University, Alexandria, Egypt
| | - M H Abdel-Aziz
- Chemical Engineering Department, Faculty of Engineering, Alexandria University, Alexandria, Egypt
- Chemical and Materials Engineering Department, King Abdulaziz University, Rabigh, Saudi Arabia
| | - M S Hassan
- Chemical Engineering Department, Faculty of Engineering, Alexandria University, Alexandria, Egypt
| | - G H Sedahmed
- Chemical Engineering Department, Faculty of Engineering, Alexandria University, Alexandria, Egypt
| | - M A El-Naggar
- Chemical Engineering Department, Faculty of Engineering, Alexandria University, Alexandria, Egypt
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5
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Li X, Jia Y, Qin Y, Zhou M, Sun J. Iron-carbon microelectrolysis for wastewater remediation: Preparation, performance and interaction mechanisms. CHEMOSPHERE 2021; 278:130483. [PMID: 34126692 DOI: 10.1016/j.chemosphere.2021.130483] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Revised: 03/30/2021] [Accepted: 04/02/2021] [Indexed: 06/12/2023]
Abstract
Rapid industrialization and urbanization have produced a lot of hazardous substances in water and wastewater, which has turned into a crucial issue to the environment and the public health. Recently, iron carbon microelectrolysis (IC-ME) has attracted extensive attention in environmental remediation due to its low costs and excellent performance. Nevertheless, there is still a lack of a more systematic review on IC-ME preparation methods, their performance, and the interaction mechanisms of IC-ME in the remediation of wastewater. Herein, this work summarizes the synthetic methods, application of IC-ME materials, and the mechanism of pollutant removal by IC-ME. A variety approaches have been applied to prepare IC-ME materials, and the preparation methods and conditions have a certain influence on the properties of IC-ME materials, thus affecting the performance of pollutant removal. The mechanisms of IC-ME for contaminants removal are very complex, including adsorption, coprecipitation, reduction, surface complexation, and oxidation. Moreover, research vacant fields and problems that existed in the application of IC-ME are proposed. At last, the problems to be addressed to adapt IC to future applications are introduced. This paper reviews and prospects IC-ME wastewater remediation technology, which provides a reference for further scientific research and engineering applications.
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Affiliation(s)
- Xiang Li
- School of Environment, Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, Henan Normal University, Xinxiang, 453007, China.
| | - Yan Jia
- School of Environment, Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, Henan Normal University, Xinxiang, 453007, China
| | - Yang Qin
- School of Environment, Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, Henan Normal University, Xinxiang, 453007, China
| | - Minghua Zhou
- Key Laboratory of Pollution Process and Environmental Criteria, Ministry of Education, Tianjin Key Laboratory of Environ. Technol. for Complex Trans-Media Pollution, Tianjin Advanced Water Treatment Technology International Joint Research Center, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China.
| | - Jianhui Sun
- School of Environment, Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, Henan Normal University, Xinxiang, 453007, China
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6
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Hubbe MA. Insisting upon Meaningful Results from Adsorption Experiments. SEPARATION & PURIFICATION REVIEWS 2021. [DOI: 10.1080/15422119.2021.1888299] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Martin A. Hubbe
- Department of Forest Biomaterials, North Carolina State University, Raleigh, NC USA
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7
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Chahkandi M, Zargazi M. Novel method of square wave voltammetry for deposition of Bi 2S 3 thin film: Photocatalytic reduction of hexavalent Cr in single and binary mixtures. JOURNAL OF HAZARDOUS MATERIALS 2019; 380:120879. [PMID: 31325700 DOI: 10.1016/j.jhazmat.2019.120879] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2019] [Revised: 07/05/2019] [Accepted: 07/07/2019] [Indexed: 06/10/2023]
Abstract
In this work a new method of square‒wave voltammetry was performed for electrodepositing of Bi2S3 film on the stainless steel mesh surface as low-cost and effective substrate in visible light harvesting. First, the obtained porous film was characterized by X‒ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), atomic force microscopy (AFM), and Raman analysis. In following, photocatalytic activity of film for reduction of hexavalent Cr was evaluated under sunlight irradiation. Results suggested that the presence of voids having several nanometers to 2 μm diameters on the film surface plays key role in photocatalytic processes. Indeed, surface voids as trapping cites and producing routs leads to multiple scattering of visible light. It can be noted that morphology of thin film, substrate structure, and diameters of voids are the main parameters to achieving the high reduction efficiency. Cr(VI) was completely reduced within 100 min under sunlight irradiation. Photoreduction mechanistic studies induced by Bi2S3 film suggested that active oxygen species such as HOO• and O2 have significant role in photocatalytic reaction. Finally, the evaluation of simultaneous photocatalytic process of binary mixture (Cr(VI) and Rhodamin B) was shown synergistic improvement of Cr(VI) and Rhodamin B degradation due to rapid surface reactions.
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Affiliation(s)
- Mohammad Chahkandi
- Department of Chemistry, Hakim Sabzevari University, Sabzevar, 96179-76487, Iran.
| | - Mahboobeh Zargazi
- Department of chemistry, Faculty of science, Ferdowsi University of Mashhad, Mashhad, 91775, Iran.
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8
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Gopal B, Gupta A. Integrated Approach for Hazardous Cr(VI) Removal: Reduction, Extraction, and Conversion into a Photoactive Composite, CuO/CuCr 2O 4. ACS OMEGA 2019; 4:20443-20449. [PMID: 31858027 PMCID: PMC6906768 DOI: 10.1021/acsomega.9b01452] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2019] [Accepted: 07/24/2019] [Indexed: 05/12/2023]
Abstract
The present study reports on CuO-assisted reduction of Cr(VI) under ambient conditions using sodium borohydride and its complete removal. The confirmation of the reductive removal of Cr(VI) was assisted by powder X-ray diffraction, Fourier transform infrared, scanning electron microscopy, mic absorption spectro, UV-vis, and UV-vis-diffuse reflectance spectroscopy techniques. The analysis revealed that the process involved adsorption of dichromate ion on the surface of copper oxide, reduction of Cr(VI), and precipitation of Cr(III) as its hydroxide. Cr(VI) reduction capacity of CuO was found to be around 27.2 mmol/(g h). The residue collected showed promising reusability for 3 to 4 cycles, and the exhausted residue was finally converted into a black composite, CuO/CuCr2O4. The composite showed positive response for the photodegradation of methyl orange. Thus, the current protocol proposed a complete package of cost-effective reduction of Cr(VI) to Cr(III), precipitation into its hydroxide, and the conversion of the residue into a photoactive composite.
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9
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Sun Z, Xu Z, Zhou Y, Zhang D, Chen W. Effects of different scrap iron as anode in Fe-C micro-electrolysis system for textile wastewater degradation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:26869-26882. [PMID: 31302892 DOI: 10.1007/s11356-019-05931-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2019] [Accepted: 07/08/2019] [Indexed: 06/10/2023]
Abstract
The degradation of organic contaminants in actual textile wastewater was carried out by iron carbon (Fe-C) micro-electrolysis. Different Fe-C micro-electrolysis systems (SIPA and SISA) were established by using scrap iron particle (SIP) and scrap iron shaving (SIS) as anode materials. The optimal condition of both systems was obtained at the initial pH of 3.0, dosage of 30 g/L and Fe/C mass ratio of 1:1. Commercial spherical Fe-C micro-electrolysis material (SFC) was used for comparison under the same condition. The results indicated that total organic carbon (TOC) and chroma removal efficiencies of SIPA and SISA were superior to that of SFC. Total iron concentration in solution and XRD analysis of electrode materials revealed that the former showed relatively high iron corrosion intensity and the physicochemical properties of scrap iron indeed affected the treatment capability. The UV-vis and 3DEEM analysis suggested that the pollutants degradation was mainly attributed to the combination of reduction and oxidation. Furthermore, the potential degradation pathways of actual textile wastewater were illustrated through the GC-MS analysis. Massive dyes, aliphatic acids, and textile auxiliaries were effectively degraded, and the SIPA and SISA exhibited higher performance on the degradation of benzene ring and dechlorination than that by SFC. In addition, SIPA and SISA exhibited high stability and excellent reusability at low cost. Graphical abstract.
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Affiliation(s)
- Zhenhua Sun
- School of Environment and Architecture, University of Shanghai for Science and Technology, 516 Jungong Rd., Shanghai, 200093, People's Republic of China
| | - Zhihua Xu
- School of Environment and Architecture, University of Shanghai for Science and Technology, 516 Jungong Rd., Shanghai, 200093, People's Republic of China.
| | - Yuwei Zhou
- School of Environment and Architecture, University of Shanghai for Science and Technology, 516 Jungong Rd., Shanghai, 200093, People's Republic of China
| | - Daofang Zhang
- School of Environment and Architecture, University of Shanghai for Science and Technology, 516 Jungong Rd., Shanghai, 200093, People's Republic of China
| | - Weifang Chen
- School of Environment and Architecture, University of Shanghai for Science and Technology, 516 Jungong Rd., Shanghai, 200093, People's Republic of China
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10
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Lv JF, Tong X, Zheng YX. Removal behavior of Cu(II) during Cr(VI) reduction by cast iron powder in absence and presence of ultrasound. SEP SCI TECHNOL 2019. [DOI: 10.1080/01496395.2019.1565777] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Jin-fang Lv
- Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming, China
- State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming, China
| | - Xiong Tong
- Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming, China
- State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming, China
| | - Yong-xing Zheng
- State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming, China
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11
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Ya V, Guillou EL, Chen YM, Yu JH, Choo KH, Chuang SM, Lee SJ, Li CW. Scrap iron packed in a Ti mesh cage as a sacrificial anode for electrochemical Cr(VI) reduction to treat electroplating wastewater. J Taiwan Inst Chem Eng 2018. [DOI: 10.1016/j.jtice.2018.03.016] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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12
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Progress in Understanding the Mechanism of CrVI Removal in Fe0-Based Filtration Systems. WATER 2018. [DOI: 10.3390/w10050651] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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13
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Fang D, Liao X, Zhang X, Teng A, Xue X. A novel resource utilization of the calcium-based semi-dry flue gas desulfurization ash: As a reductant to remove chromium and vanadium from vanadium industrial wastewater. JOURNAL OF HAZARDOUS MATERIALS 2018; 342:436-445. [PMID: 28858709 DOI: 10.1016/j.jhazmat.2017.08.060] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2017] [Revised: 08/21/2017] [Accepted: 08/22/2017] [Indexed: 06/07/2023]
Abstract
A novel resource utilization of the calcium-based semi-dry flue gas desulfurization ash is investigated. In the present study, the semi-dry desulfurization ash is used as a reductant for chromium and vanadium removal by chemical reduction precipitation, the byproduct gypsum and chromium-contained sludge are obtained. Besides, the effects of main operational parameters (reaction pH, desulfurization ash dosage and reaction time) on the heavy metal removal are investigated, and the main reaction mechanism for this treatment technology is also proposed. Under the optimal conditions, the residual concentrations of Cr(VI), total Cr and V are 0.163mg/L, 0.395mg/L and 0.155mg/L, respectively. Additionally, byproduct gypsum and chromium-contained sludge are characterized using X-ray diffraction (XRD), fourier transform infrared spectroscopy (FT-IR), scanning electron microscope-energy dispersive spectrometer (SEM-EDS) and thermogravimetry differential scanning calorimetry (TG-DSC), respectively. Finally, the resource utilization methods of the byproduct gypsum and chromium-contained sludge from this technology are also submitted. The byproduct gypsum can be utilized to produce hemihydrate calcium sulfate whisker, and the roasted heavy metal precipitation can be used as a primary chromium raw material (Cr2O3 content is about 83%).
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Affiliation(s)
- Dean Fang
- School of Metallurgy, Northeastern University, Shenyang, 110004, China; Liaoning Key Laboratory of Metallurgical Resources Recycling Science, Shenyang 110004, China
| | - Xiang Liao
- School of Metallurgy, Northeastern University, Shenyang, 110004, China; Liaoning Key Laboratory of Metallurgical Resources Recycling Science, Shenyang 110004, China
| | - Xuefei Zhang
- School of Metallurgy, Northeastern University, Shenyang, 110004, China; Liaoning Key Laboratory of Metallurgical Resources Recycling Science, Shenyang 110004, China
| | - Aijun Teng
- School of Metallurgy, Northeastern University, Shenyang, 110004, China; Liaoning Key Laboratory of Metallurgical Resources Recycling Science, Shenyang 110004, China
| | - Xiangxin Xue
- School of Metallurgy, Northeastern University, Shenyang, 110004, China; Liaoning Key Laboratory of Metallurgical Resources Recycling Science, Shenyang 110004, China.
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14
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Electrochemical Cr(VI) reduction using a sacrificial Fe anode: Impacts of solution chemistry and stoichiometry. Sep Purif Technol 2018. [DOI: 10.1016/j.seppur.2017.09.028] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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15
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Khabarov YG, Kuzyakov NY, Veshnyakov VA, Malkov AV, Shkaeva NV, Pankina GV. Synthesis of a magnetoactive compound by the interaction of iron(II) sulfate with potassium chromate. RUSS J INORG CHEM+ 2017. [DOI: 10.1134/s0036023617020085] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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16
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Wang Y, Xu K, Wang B, Zhang J. Hydrogen inhibition in a wet aluminum dust collection system using dichromate solution. RSC Adv 2017. [DOI: 10.1039/c7ra05017h] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
By using dichromate solution, hydrogen production reaction between aluminum dust and water is inhibited.
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Affiliation(s)
- Yantong Wang
- College of Resource and Civil Engineering
- Northeastern University
- Shenyang
- China
| | - Kaili Xu
- College of Resource and Civil Engineering
- Northeastern University
- Shenyang
- China
| | - Ben Wang
- College of Resource and Civil Engineering
- Northeastern University
- Shenyang
- China
| | - Jinjia Zhang
- College of Resource and Civil Engineering
- Northeastern University
- Shenyang
- China
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17
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Hu Y, Hao X, Zhao D, Fu K. Enhancing the CH4 yield of anaerobic digestion via endogenous CO2 fixation by exogenous H2. CHEMOSPHERE 2015; 140:34-9. [PMID: 25455677 DOI: 10.1016/j.chemosphere.2014.10.022] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2014] [Revised: 07/10/2014] [Accepted: 10/05/2014] [Indexed: 05/20/2023]
Abstract
A large amount (25-60%) of degraded organics is converted directly to CO2 during anaerobic digestion (AD) process, which substantially lowers the energy (methane, CH4) yield. In this study, endogenous CO2 fixation by H2 from in-situ iron corrosion was explored to enhancing the CH4 yield. The results demonstrated that a substantial enhancement (up to 61%) in the CH4 yield could be achieved with both nano-scale zero-valent iron (NZVI) and waste iron scraps (WIS) being the added iron. Additionally, the added iron could also achieve effective phosphorus removal from the AD supernatant.
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Affiliation(s)
- Yuansheng Hu
- Beijing University of Civil Engineering and Architecture/Beijing Climate Change Research and Education Centre, Beijing 100044, PR China
| | - Xiaodi Hao
- Beijing University of Civil Engineering and Architecture/Beijing Climate Change Research and Education Centre, Beijing 100044, PR China.
| | - Dan Zhao
- Beijing University of Civil Engineering and Architecture/Beijing Climate Change Research and Education Centre, Beijing 100044, PR China
| | - Kunming Fu
- Beijing University of Civil Engineering and Architecture/Beijing Climate Change Research and Education Centre, Beijing 100044, PR China
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18
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Petala E, Dimos K, Douvalis A, Bakas T, Tucek J, Zbořil R, Karakassides MA. Nanoscale zero-valent iron supported on mesoporous silica: characterization and reactivity for Cr(VI) removal from aqueous solution. JOURNAL OF HAZARDOUS MATERIALS 2013; 261:295-306. [PMID: 23959249 DOI: 10.1016/j.jhazmat.2013.07.046] [Citation(s) in RCA: 142] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2013] [Revised: 07/18/2013] [Accepted: 07/21/2013] [Indexed: 06/02/2023]
Abstract
MCM-41-supported nanoscale zero-valent iron (nZVI) was sytnhesized by impregnating the mesoporous silica martix with ferric chloride, followed by chemical reduction with NaHB4. The samples were studied with a combination of characterization techniques such as powder X-ray diffraction (XRD), Fourier-transform infrared (FT-IR) and Mössbauer spectroscopy, N2 adsorption measurements, transmission electron microscopy (TEM), magnetization measurements, and thermal analysis methods. The experimental data revealed development of nanoscale zero-valent iron particles with an elliptical shape and a maximum size of ∼80 nm, which were randomly distributed and immobilized on the mesoporous silica surface. Surface area measurements showed that the porous MCM-41 host matrix maintains its hexagonal mesoporous order structure and exhibits a considerable high surface area (609 m(2)/g). Mössbauer and magnetization measurements confirmed the presence of core-shell iron nanoparticles composed of a ferromagnetic metallic core and an oxide/hydroxide shell. The kinetic studies demonstrated a rapid removal of Cr(VI) ions from the aqueous solutions in the presence of these stabilized nZVI particles on MCM-41, and a considerably increased reduction capacity per unit mass of material in comparison to that of unsupported nZVI. The results also indicate a highly pH-dependent reduction efficiency of the material, whereas their kinetics was described by a pseudo-first order kinetic model.
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Affiliation(s)
- Eleni Petala
- Department of Materials Science and Engineering, University of Ioannina, GR-45110 Ioannina, Greece; Regional Centre of Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacky University, 17.listopadu 1192/12, 771 46 Olomouc, Czech Republic
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Volpe A, Pagano M, Mascolo G, Lopez A, Ciannarella R, Locaputo V. Simultaneous Cr(VI) reduction and non-ionic surfactant oxidation by peroxymonosulphate and iron powder. CHEMOSPHERE 2013; 91:1250-1256. [PMID: 23499224 DOI: 10.1016/j.chemosphere.2013.02.012] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2012] [Revised: 02/06/2013] [Accepted: 02/08/2013] [Indexed: 06/01/2023]
Abstract
Some industrial wastewaters contain both hexavalent chromium and surfactants. In this work, their removal from aqueous solution by zero-valent iron (ZVI) and peroxymonosulphate (PMS) was studied using Brij 35 as a representative non-ionic surfactant. The performance of the ZVI/PMS system in the simultaneous removal of both pollutants was compared to that achieved with control solutions containing either Cr(VI) or Brij 35 separately. Reactions were carried out over 24h at initial pH=2.3 with variable initial amounts of Cr(VI) and Brij 35. The results showed that surfactant removal was enhanced in the system also containing Cr(VI). Surfactant degradation followed zero-order kinetics and produced formic acid as the main by-product, together with hydroxylated aldehydes, formates and alcohols that were identified by LC/MS. The presence of surfactant similarly enhanced Cr(VI) reduction, which also followed zero-order kinetics. Chromium removal was quantitative only when the initial chromium concentration was lower than 140 mg L(-1). Reduced chromium was mainly in the solution phase together with dissolved iron. Precipitation with NaOH was therefore required to definitively remove dissolved metals from the investigated system.
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Affiliation(s)
- Angela Volpe
- Consiglio Nazionale delle Ricerche, Istituto di Ricerca Sulle Acque, Sezione di Bari, via Francesco De Blasio, 5, 70132 Bari, Italy.
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Singh R, Bishnoi NR, Kirrolia A, Kumar R. Synergism of Pseudomonas aeruginosa and Fe0 for treatment of heavy metal contaminated effluents using small scale laboratory reactor. BIORESOURCE TECHNOLOGY 2013; 127:49-58. [PMID: 23131622 DOI: 10.1016/j.biortech.2012.09.056] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2012] [Revised: 09/08/2012] [Accepted: 09/15/2012] [Indexed: 06/01/2023]
Abstract
In this study Pseudomonas aeruginosa a metal tolerant strain was not only applied for heavy metal removal but also to the solublization performance of the precipitated metal ions during effluent treatment. The synergistic effect of the isolate and Fe(0) enhanced the metal removal potential to 72.97% and 87.63% for Cr(VI) and cadmium, respectively. The decrease in cadmium ion removal to 43.65% (aeration+stirring reactors), 21.33% (aerated reactors), and 18.95% (without aerated+without stirring) with an increase in incubation period not only indicate the presence of soluble less toxic complexes, but also help in exploration of the balancing potential for valuable metal recovery. A relatively best fit and significant values of the correlation coefficient 0.912, 0.959, and 0.9314 for mixed effluent (Paint Industry effluent+CETP Wazirpur, effluent), CETP, Wazirpur, and control effluents, respectively, indicating first-order formulation and provide a reasonable description of COD kinetic data.
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Affiliation(s)
- Rajesh Singh
- Department of Environmental Science & Engineering, Guru Jambheshwar University of Science & Technology, Hisar 125001, Haryana, India
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Gheju M, Balcu I. Removal of chromium from Cr(VI) polluted wastewaters by reduction with scrap iron and subsequent precipitation of resulted cations. JOURNAL OF HAZARDOUS MATERIALS 2011; 196:131-8. [PMID: 21955659 DOI: 10.1016/j.jhazmat.2011.09.002] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2011] [Revised: 08/28/2011] [Accepted: 09/02/2011] [Indexed: 05/26/2023]
Abstract
This work presents investigations on the total removal of chromium from Cr(VI) aqueous solutions by reduction with scrap iron and subsequent precipitation of the resulted cations with NaOH. The process was detrimentally affected by a compactly passivation film occurred at scrap iron surface, mainly composed of Cr(III) and Fe(III). Maximum removal efficiency of the Cr(total) and Fe(total) achieved in the clarifier under circumneutral and alkaline (pH 9.1) conditions was 98.5% and 100%, respectively. The optimum precipitation pH range which resulted from this study is 7.6-8.0. Fe(total) and Cr(total) were almost entirely removed in the clarifier as Fe(III) and Cr(III) species; however, after Cr(VI) breakthrough in column effluent, chromium was partially removed in the clarifier also as Cr(VI), by coprecipitation with cationic species. As long the column effluent was free of Cr(VI), the average Cr(total) removal efficiency of the packed column and clarifier was 10.8% and 78.8%, respectively. Our results clearly indicated that Cr(VI) contaminated wastewater can be successfully treated by combining reduction with scrap iron and chemical precipitation with NaOH.
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Affiliation(s)
- M Gheju
- Politehnica University of Timisoara, Faculty of Industrial Chemistry and Environmental Engineering, Bd. V. Parvan Nr. 6, Et. 4, 300223, Timisoara, Romania.
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Wu S, Qi Y, Gao Y, Xu Y, Gao F, Yu H, Lu Y, Yue Q, Li J. Preparation of ceramic-corrosion-cell fillers and application for cyclohexanone industry wastewater treatment in electrobath reactor. JOURNAL OF HAZARDOUS MATERIALS 2011; 196:139-144. [PMID: 21940100 DOI: 10.1016/j.jhazmat.2011.09.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2011] [Revised: 08/29/2011] [Accepted: 09/02/2011] [Indexed: 05/31/2023]
Abstract
As new media, ceramic-corrosion-cell fillers (Cathode Ceramic-corrosion-cell Fillers - CCF, and Anode Ceramic-corrosion-cell Fillers - ACF) employed in electrobath were investigated for cyclohexanone industry wastewater treatment. 60.0 wt% of dried sewage sludge and 40.0 wt% of clay, 40.0 wt% of scrap iron and 60.0 wt% of clay were utilized as raw materials for the preparation of raw CCF and ACF, respectively. The raw CCF and ACF were respectively sintered at 400°C for 20 min in anoxic conditions. The physical properties (bulk density, grain density and water absorption), structural and morphological characters and toxic metal leaching contents were tested. The influences of pH, hydraulic retention time (HRT) and the media height on removal of COD(Cr) and cyclohexanone were studied. The results showed that the bulk density and grain density of CCF and ACF were 869.0 kg m(-3) and 936.3 kg m(-3), 1245.0 kg m(-3) and 1420.0 kg m(-3), respectively. The contents of toxic metal (Cu, Zn, Cd, Pb, Cr, Ba, Ni and As) were all below the detection limit. When pH of 3-4, HRT of 6h and the media height of 60 cm were applied, about 90% of COD(cr) and cyclohexanone were removed.
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Affiliation(s)
- Suqing Wu
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, 250100 Jinan, China
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Prasad PVVV, Das C, Golder AK. Reduction of Cr(VI) to Cr(III) and removal of total chromium from wastewater using scrap iron in the form of zerovalent iron(ZVI): Batch and column studies. CAN J CHEM ENG 2011. [DOI: 10.1002/cjce.20590] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Noubactep C, Caré S. Designing laboratory metallic iron columns for better result comparability. JOURNAL OF HAZARDOUS MATERIALS 2011; 189:809-813. [PMID: 21470775 DOI: 10.1016/j.jhazmat.2011.03.016] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2010] [Revised: 03/06/2011] [Accepted: 03/08/2011] [Indexed: 05/30/2023]
Abstract
Despite the amount of data available on investigating the process of aqueous contaminant removal by metallic iron (Fe(0)), there is still a significant amount of uncertainty surrounding the design of Fe(0) beds for laboratory testing to determine the suitability of Fe(0) materials for field applications. Available data were obtained under various operating conditions (e.g., column characteristics, Fe(0) characteristics, contaminant characteristics, oxygen availability, solution pH) and are hardly comparable to each other. The volumetric expansive nature of iron corrosion has been univocally reported as major drawback for Fe(0) beds. Mixing Fe(0) with inert materials has been discussed as an efficient tool to improve sustainability of Fe(0) beds. This paper discusses some problems associated with the design of Fe(0) beds and proposes a general approach for the characterization of Fe(0) beds. Each Fe(0) column should be characterized by its initial porosity, the composition of the steady phase and the volumetric proportion of individual materials. Used materials should be characterized by their density, porosity, and particle size. This work has introduced simple and reliable mathematical equations for column design, which include the normalisation of raw experimental data prior to any data treatment.
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Affiliation(s)
- C Noubactep
- Angewandte Geologie, Universität Göttingen, Goldschmidtstrasse 3, D-37077 Göttingen, Germany.
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Yoon IH, Bang S, Chang JS, Gyu Kim M, Kim KW. Effects of pH and dissolved oxygen on Cr(VI) removal in Fe(0)/H2O systems. JOURNAL OF HAZARDOUS MATERIALS 2011; 186:855-862. [PMID: 21163574 DOI: 10.1016/j.jhazmat.2010.11.074] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2010] [Revised: 11/18/2010] [Accepted: 11/19/2010] [Indexed: 05/30/2023]
Abstract
The effects of pH and dissolved oxygen (DO) on aqueous Cr(VI) removal by micro-scale zero-valent iron (Fe(0)/H(2)O system) were investigated. Batch experiments were conducted at pH 4.0, 5.0 and 6.0 under oxic and anoxic conditions. Column experiments were performed at pH 5.0 and 7.5 under oxic condition. Spectroscopic analyses were applied to explain the mechanism of Cr(VI) removal using X-ray absorption near-edge structure (XANES), X-ray diffraction (XRD), and scanning electron microscopy (SEM). Results showed that the kinetics of Cr(VI) removal were fastest at pH 5 under both oxic and anoxic conditions. As a rule, Cr(VI) removal were faster under oxic conditions than under anoxic conditions. Column experiments showed that Cr(VI) removal was about 1.7-fold higher at pH 5 than at pH 7.5. XANES (X-ray absorption near edge structures) results showed that Fe(0) reduced Cr(VI) to Cr(III) under both oxic and anoxic conditions. X-ray diffraction patterns of the Cr(VI)-Fe(0) reaction products suggested partial formation of chromite (FeCr(2)O(4)) at pH 5 and 6 under oxic conditions. However, nano-sized clusters of Cr(III)/Fe(III) hydroxide/oxyhydroxide were formed on the surface of Fe(0) under anoxic conditions. These results indicate that the presence of oxygen in solution plays an important role in control of the kinetic of Cr(VI) removal and in development of various Cr(VI) reduction products.
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Affiliation(s)
- In-Ho Yoon
- School of Environmental Science and Engineering, Gwangju Institute of Science and Technology (GIST), Buk-gu, Gwangju, Republic of Korea
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