1
|
Lan Y, Sun Y, Chu S, Yang B, Zhang L, Xiao L, Li J, Yuan X, Yan X, Galvita VV, Su X. Efficient removal and transformation of Cr(VI) from alkaline wastewater to form a ferrochromium spinel multiphase via a modified ferrite process. CHEMOSPHERE 2024; 351:141185. [PMID: 38215831 DOI: 10.1016/j.chemosphere.2024.141185] [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: 05/19/2023] [Revised: 12/27/2023] [Accepted: 01/09/2024] [Indexed: 01/14/2024]
Abstract
Chromium-containing wastewater causes serious environmental pollution due to the harmfulness of Cr(VI). The ferrite process is typically used to treat chromium-containing wastewater and recycle the valuable chromium metal. However, the current ferrite process is unable to fully transform Cr(VI) into chromium ferrite under mild reaction conditions. This paper proposes a novel ferrite process to treat chromium-containing wastewater and recover valuable chromium metal. The process combines FeSO4 reduction and hydrothermal treatment to remove Cr(VI) and form chromium ferrite composites. The Cr(VI) concentration in the wastewater was reduced from 1040 mg L-1 to 0.035 mg L-1, and the Cr(VI) leaching toxicity of the precipitate was 0.21 mg L-1 under optimal hydrothermal conditions. The precipitate consisted of micron-sized ferrochromium spinel multiphase with polyhedral structure. The mechanism of Cr(VI) removal involved three steps: 1) partial oxidation of FeSO4 to Fe(III) hydroxide and oxy-hydroxide; 2) reduction of Cr(VI) by FeSO4 to Cr(III) and Fe(III) precipitates; 3) transformation and growth of the precipitates into chromium ferrite composites. This process meets the release standards of industrial wastewater and hazardous waste and can improve the efficiency of the ferrite process for toxic heavy metal removal.
Collapse
Affiliation(s)
- Yingying Lan
- School of Environment and Energy, Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling, South China University of Technology, Guangzhou, Guangdong, 510006, PR China
| | - Yiwei Sun
- School of Environment and Energy, Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling, South China University of Technology, Guangzhou, Guangdong, 510006, PR China
| | - Shasha Chu
- School of Environment and Energy, Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling, South China University of Technology, Guangzhou, Guangdong, 510006, PR China
| | - Bo Yang
- School of Environment and Energy, Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling, South China University of Technology, Guangzhou, Guangdong, 510006, PR China
| | - Lijuan Zhang
- School of Environment, South China Normal University, University Town, Guangzhou, Guangdong, 510006, PR China
| | - Lin Xiao
- Sichuan Yinhe Chemical Co., Ltd, Mianyang, Sichuan, 621000, PR China
| | - Jinlin Li
- School of Environment and Energy, Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling, South China University of Technology, Guangzhou, Guangdong, 510006, PR China
| | - Xiaochao Yuan
- Sichuan Yinhe Chemical Co., Ltd, Mianyang, Sichuan, 621000, PR China
| | - Xin Yan
- Sichuan Yinhe Chemical Co., Ltd, Mianyang, Sichuan, 621000, PR China
| | - Vladimir V Galvita
- Laboratory for Chemical Technology, Ghent University, Technologiepark 125, 9052, Ghent, Belgium.
| | - Xintai Su
- School of Environment and Energy, Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling, South China University of Technology, Guangzhou, Guangdong, 510006, PR China.
| |
Collapse
|
2
|
Du Y, Du Y, Ma W, Zhao X, Ma M, Cao L, Du D. Application of dirty-acid wastewater treatment technology in non-ferrous metal smelting industry: Retrospect and prospect. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 352:120050. [PMID: 38224641 DOI: 10.1016/j.jenvman.2024.120050] [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: 10/06/2023] [Revised: 12/13/2023] [Accepted: 01/04/2024] [Indexed: 01/17/2024]
Abstract
Dirty-acid wastewater (DW) originating from the non-ferrous metal smelting industry is characterized by a high concentration of H2SO4 and As. During the chemical precipitation treatment, a significant volume of arsenic-containing slag is generated, leading to elevated treatment expenses. The imperative to address DW with methods that are cost-effective, highly efficient, and safe is underscored. This paper conducts a comprehensive analysis of three typical methods to DW treatment, encompassing technical principles, industrial application flow charts, research advancements, arsenic residual treatment, and economic considerations. Notably, the sulfide method emerges as a focal point due to its minimal production of arsenic residue and the associated lowest overall treatment costs. Moreover, in response to increasingly stringent environmental protection policies targeting new pollutants and carbon emissions reduction, the paper explores the evolving trends in DW treatment. These trends encompass rare metal and sulfuric acid recycling, cost-effective H2S production methods, and strategies for reducing, safely disposing of, and harnessing resources from arsenic residue.
Collapse
Affiliation(s)
- Ying Du
- Key Laboratory of Catalysis Conversion and Energy Materials Chemistry of Ministry of Education, South-Central Minzu University, Wuhan, 430074, PR China; Engineering Research Center for Heavy Metal Pollution Control of Hubei Province, South-Central Minzu University, Wuhan, 430074, PR China
| | - Yaguang Du
- Key Laboratory of Catalysis Conversion and Energy Materials Chemistry of Ministry of Education, South-Central Minzu University, Wuhan, 430074, PR China; Engineering Research Center for Heavy Metal Pollution Control of Hubei Province, South-Central Minzu University, Wuhan, 430074, PR China
| | - Wenbo Ma
- Key Laboratory of Catalysis Conversion and Energy Materials Chemistry of Ministry of Education, South-Central Minzu University, Wuhan, 430074, PR China; Engineering Research Center for Heavy Metal Pollution Control of Hubei Province, South-Central Minzu University, Wuhan, 430074, PR China
| | - Xiaolong Zhao
- Key Laboratory of Catalysis Conversion and Energy Materials Chemistry of Ministry of Education, South-Central Minzu University, Wuhan, 430074, PR China; Engineering Research Center for Heavy Metal Pollution Control of Hubei Province, South-Central Minzu University, Wuhan, 430074, PR China
| | - Mengyu Ma
- Key Laboratory of Catalysis Conversion and Energy Materials Chemistry of Ministry of Education, South-Central Minzu University, Wuhan, 430074, PR China; Engineering Research Center for Heavy Metal Pollution Control of Hubei Province, South-Central Minzu University, Wuhan, 430074, PR China
| | - Longwen Cao
- Daye Nonferrous Corporation, Huangshi, 435005, PR China
| | - Dongyun Du
- Key Laboratory of Catalysis Conversion and Energy Materials Chemistry of Ministry of Education, South-Central Minzu University, Wuhan, 430074, PR China; Engineering Research Center for Heavy Metal Pollution Control of Hubei Province, South-Central Minzu University, Wuhan, 430074, PR China.
| |
Collapse
|
3
|
Yang D, Shi M, Zhang J, Sasaki A, Endo M. Reductive roasting of arsenic-contaminated red mud for Fe resources recovery driven by johnbaumite-based arsenic thermostabilization strategy. JOURNAL OF HAZARDOUS MATERIALS 2023; 452:131255. [PMID: 36989791 DOI: 10.1016/j.jhazmat.2023.131255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Revised: 03/14/2023] [Accepted: 03/20/2023] [Indexed: 06/19/2023]
Abstract
Arsenic-contaminated red mud (As-RM) is a hazardous waste with limited recycling approaches. Generally, through reductive roasting and magnetic separation, RM could be transformed into Fe-rich concentrate for Fe resource recovery. However, due to the poor thermostabilization of As species, reductive roasting of As-RM would cause severe As volatilization pollution together with high As leaching risks from heated residue. Herein, a novel johnbaumite-based As thermostabilization strategy is developed for clean Fe resources recycling from As-RM. We found that in the presence of Ca(OH)2, the As species in As-RM could be immobilized as thermostable and insoluble johnbaumite (Ca5(AsO4)3OH) at 900 °C, effectively enhancing the As thermostability and insolubility. Introducing 1.5% Ca(OH)2 into As-RM suppressed the As volatilization ratio from 60.3% to 15.7% during reductive roasting. Meanwhile, the As leaching concentration of the reduced residue was reduced to < 100 µg/L, thus satisfying the Japanese wastewater discharge standard. A concentrate with approximately 67.5% total iron grade was obtained from As-RM through this clean reductive roasting and magnetic separation. Overall, the approach introduced in this work effectively reduces the As diffusion pollution deriving from As-RM thermal reduction, which could contribute to hazardous As-RM reutilization, clean Fe resources recovery, and As pollution mitigation.
Collapse
Affiliation(s)
- Dazhong Yang
- Department of Ocean Science and Engineering, Southern University of Science and Technology, Shenzhen, China.
| | - Manyu Shi
- Graduate School of Science and Engineering, Yamagata University, Jhonan 4-3-16 Yonezawa, Yamagata 992-8510, Japan
| | - Juan Zhang
- School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, China
| | - Atsushi Sasaki
- Graduate School of Science and Engineering, Yamagata University, Jhonan 4-3-16 Yonezawa, Yamagata 992-8510, Japan
| | - Masatoshi Endo
- Graduate School of Science and Engineering, Yamagata University, Jhonan 4-3-16 Yonezawa, Yamagata 992-8510, Japan
| |
Collapse
|
4
|
Chen M, Hu H, Chen M, Wang C, Wang Q, Zeng C, Shi Q, Song W, Li X, Zhang Q. In-situ production of iron flocculation and reactive oxygen species by electrochemically decomposing siderite: An innovative Fe-EC route to remove trivalent arsenic. JOURNAL OF HAZARDOUS MATERIALS 2023; 441:129884. [PMID: 36084465 DOI: 10.1016/j.jhazmat.2022.129884] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2021] [Revised: 07/28/2022] [Accepted: 08/28/2022] [Indexed: 06/15/2023]
Abstract
The removal of trivalent arsenic (As (III)) from water has received extensive attention from researchers. Iron electrocoagulation (Fe-EC) is an efficient technology for arsenic removal. However, electrode passivation hinders the development and application of Fe-EC. In this work, an innovative Fe-EC route was developed to remove As (III) through an electrochemical-siderite packed column (ESC). Ferrous ions were produced from siderite near the anode, and hydroxide was generated near the cathode during the electrochemical decomposition of siderite. As a result, an effect of Fe-EC-like was obtained. The results showed that an excellent removal performance of As (III) (>99%) was obtained by adjusting the parameters (As (III) concentration at 10 mg/L, pH at 7, Na2SO4 at 10 mM and the hydraulic retention time at 30 min) and the oxidation rate of As (III) reached 84.12%. The mechanism analysis indicated that As (III) was oxidized to As (Ⅴ) by the produced active oxide species and electrode, and then was removed by capturing on the iron oxide precipitates. As (III) was likely to be oxidized in two ways, one by the reactive oxygen species (possibly •OH, Fe(IV) and •O2- species), and another directly by the anode. The long-term effectiveness of arsenic removal demonstrated that ESC process based on the electrochemical-siderite packed column was an appropriate candidate for treating As (III) pollution.
Collapse
Affiliation(s)
- Mengfei Chen
- School of Resources and Environmental Engineering, Wuhan University of Technology, Luoshi Road 122, Wuhan 430070, PR China
| | - Huimin Hu
- School of Resources and Environmental Engineering, Wuhan University of Technology, Luoshi Road 122, Wuhan 430070, PR China
| | - Min Chen
- School of Resources and Environmental Engineering, Wuhan University of Technology, Luoshi Road 122, Wuhan 430070, PR China
| | - Chao Wang
- School of Resources and Environmental Engineering, Wuhan University of Technology, Luoshi Road 122, Wuhan 430070, PR China
| | - Qian Wang
- School of Resources and Environmental Engineering, Wuhan University of Technology, Luoshi Road 122, Wuhan 430070, PR China
| | - Chaocheng Zeng
- School of Resources and Environmental Engineering, Wuhan University of Technology, Luoshi Road 122, Wuhan 430070, PR China
| | - Qing Shi
- School of Resources and Environmental Engineering, Wuhan University of Technology, Luoshi Road 122, Wuhan 430070, PR China
| | - Weijie Song
- Ganjiang Innovation Academy, Chinese Academy of Sciences, Ganzhou 341000, PR China
| | - Xuewei Li
- Ganjiang Innovation Academy, Chinese Academy of Sciences, Ganzhou 341000, PR China.
| | - Qiwu Zhang
- School of Resources and Environmental Engineering, Wuhan University of Technology, Luoshi Road 122, Wuhan 430070, PR China.
| |
Collapse
|
5
|
Yong Y, Yongkui L, Jianhang H, Dapeng Z, Hua W. An all-in-one strategy for resource recovery and immobilization of arsenic from arsenic-bearing gypsum sludge. CHEMOSPHERE 2022; 296:134078. [PMID: 35202660 DOI: 10.1016/j.chemosphere.2022.134078] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2021] [Revised: 02/17/2022] [Accepted: 02/19/2022] [Indexed: 06/14/2023]
Abstract
Arsenic (As)-bearing gypsum sludge, one of the most prominent hazardous wastes, has created a myriad of critical problems in human health, waters, soils, and sediments at the global scale. Unfortunately, the reclamation and disposal of As-bearing gypsum sludge have been rarely investigated. This paper aims to explore a novel technology for simultaneous value-added utilization and harmless exploitation of As-bearing gypsum sludge. In the experiment, As-bearing gypsum sludge and anthracite were mixed, granulated, and then roasted in Ar atmosphere. Based on the thermodynamic analysis and experimental results, the As migration mechanism in the As-bearing gypsum sludge was determined during the roasting process. Under optimal conditions, 90% of As phase was volatilized and then recovered in the form of elemental As99.5, and it could act as a chemical product. In addition, As99.5 could be further processed into high-purity As and As2O3 using existing chlorination-rectification-reduction process and oxidation process, respectively, which can be widely used in the treatments of semiconductor material, pigment, and wood. Residual As primarily occurred as Fe-As compounds, but the leached As concentration in the toxicity characteristic leaching procedure was only 0.008 mg/L. Correspondingly, a new As immobilization method that generates Fe-As compounds (α-Fe and AsFe2) is first proposed and then verified, which may be widely used for simultaneous As-bearing solid wastes reduction and improved harmlessness. This paper is significant for development of the metallurgical, mining, acid, and thermal power industries, minimizing its environmental risk.
Collapse
Affiliation(s)
- Yu Yong
- Engineering Research Center of Metallurgical Energy Conservation and Emission Reduction, Ministry of Education, Kunming University of Science and Technology, Kunming, 650093, China; National Local Joint Engineering Research Center of Energy Saving and Environmental Protection Technology in Metallurgy and Chemical Engineering Industry, Kunming University of Science and Technology, Kunming, 650093, China; State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming, 650093, China
| | - Li Yongkui
- School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing, 100083, China
| | - Hu Jianhang
- Engineering Research Center of Metallurgical Energy Conservation and Emission Reduction, Ministry of Education, Kunming University of Science and Technology, Kunming, 650093, China; National Local Joint Engineering Research Center of Energy Saving and Environmental Protection Technology in Metallurgy and Chemical Engineering Industry, Kunming University of Science and Technology, Kunming, 650093, China; State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming, 650093, China
| | - Zhong Dapeng
- College of Materials Science and Engineering, Chongqing University, Chongqing, 400044, China
| | - Wang Hua
- Engineering Research Center of Metallurgical Energy Conservation and Emission Reduction, Ministry of Education, Kunming University of Science and Technology, Kunming, 650093, China; National Local Joint Engineering Research Center of Energy Saving and Environmental Protection Technology in Metallurgy and Chemical Engineering Industry, Kunming University of Science and Technology, Kunming, 650093, China; State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming, 650093, China.
| |
Collapse
|