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Qi T, Zhang S, Zhang J, Li T, Xing L, Fang Z, An S, Xu Z, Xiao H, Wang L. In Situ Reconstruction of Active Catalysis Sites Triggered by Chromium Immobilization for Sulfite Oxidation. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023; 57:3905-3916. [PMID: 36812062 DOI: 10.1021/acs.est.2c09606] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Hexavalent chromium (Cr(VI)) is a highly toxic substance in wastewater, triggering grievous detriment to aquatic life and human health. Magnesium sulfite is spawned along with the desulfurization process in coal-fired power plants, which is usually disposed of as solid waste. Here, a "waste control by waste" method was proposed upon the redox of Cr(VI)-sulfite, in which highly toxic Cr(VI) is detoxicated and sequent enriched on a novel biochar-induced cobalt-based silica composite (BISC) due to the forced electron transfer from chromium to surface hydroxyl. The immobilized Cr on BISC gave rise to the reconstruction of catalytic active sites "Cr-O-Co", which further enhance its performance in sulfite oxidation by elevating O2 adsorption. As a result, the sulfite oxidation rate increased by 10 times compared with the non-catalysis benchmark together with the maximum chromium adsorption capacity being 120.3 mg/g. Therefore, this study provides a promising strategy to simultaneously control highly toxic Cr(VI) and sulfite, achieving high-grade sulfur resource recovery for wet magnesia desulfurization.
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Affiliation(s)
- Tieyue Qi
- Hebei Key Laboratory of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Electric Power University, Baoding 071003, China
- MOE Key Laboratory of Resources and Environmental Systems Optimization, College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, China
| | - Shuo Zhang
- Hebei Key Laboratory of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Electric Power University, Baoding 071003, China
- MOE Key Laboratory of Resources and Environmental Systems Optimization, College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, China
| | - Jingzhao Zhang
- Hebei Key Laboratory of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Electric Power University, Baoding 071003, China
- MOE Key Laboratory of Resources and Environmental Systems Optimization, College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, China
| | - Tong Li
- Hebei Key Laboratory of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Electric Power University, Baoding 071003, China
- MOE Key Laboratory of Resources and Environmental Systems Optimization, College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, China
| | - Lei Xing
- Hebei Key Laboratory of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Electric Power University, Baoding 071003, China
- MOE Key Laboratory of Resources and Environmental Systems Optimization, College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, China
| | - Zhimo Fang
- Hebei Key Laboratory of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Electric Power University, Baoding 071003, China
- MOE Key Laboratory of Resources and Environmental Systems Optimization, College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, China
| | - Shanlong An
- Hebei Key Laboratory of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Electric Power University, Baoding 071003, China
- MOE Key Laboratory of Resources and Environmental Systems Optimization, College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, China
| | - Zhongfei Xu
- Hebei Key Laboratory of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Electric Power University, Baoding 071003, China
- MOE Key Laboratory of Resources and Environmental Systems Optimization, College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, China
| | - Huining Xiao
- Department of Chemical Engineering, University of New Brunswick, Fredericton E3B 5A3, Canada
| | - Lidong Wang
- Hebei Key Laboratory of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Electric Power University, Baoding 071003, China
- MOE Key Laboratory of Resources and Environmental Systems Optimization, College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, China
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Wetchakun N, Wanwaen P, Phanichphant S, Wetchakun K. Influence of Cu doping on the visible-light-induced photocatalytic activity of InVO4. RSC Adv 2017. [DOI: 10.1039/c6ra27138c] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The photocatalytic degradation of methylene blue (MB) in the presence of pure InVO4 and 0.5–5.0 mol% Cu-doped InVO4 samples under visible light irradiation (λ ≥ 400 nm) was studied in this research.
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Affiliation(s)
- Natda Wetchakun
- Department of Physics and Materials Science
- Faculty of Science
- Chiang Mai University
- Chiang Mai 50200
- Thailand
| | - Pimonrat Wanwaen
- Department of Physics and Materials Science
- Faculty of Science
- Chiang Mai University
- Chiang Mai 50200
- Thailand
| | - Sukon Phanichphant
- Materials Science Research Center
- Faculty of Science
- Chiang Mai University
- Chiang Mai 50200
- Thailand
| | - Khatcharin Wetchakun
- Program of Physics
- Faculty of Science
- Ubon Ratchathani Rajabhat University
- Ubon Ratchathani 34000
- Thailand
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Zhang J, Zheng CH, Zhang YX, Xu ZW, Wang L, Li CJ, Gao X. Experimental investigation of sulfite oxidation enhancement in a micro-pore aeration system. RSC Adv 2016. [DOI: 10.1039/c6ra19337d] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Seawater wet flue gas desulfurization is a promising process for coal-fired power plants.
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Affiliation(s)
- Jun Zhang
- State Key Laboratory of Clean Energy Utilization
- State Environmental Protection Engineering Center for Coal-Fired Air Pollution Control
- Zhejiang University
- Hangzhou 310027
- China
| | - Cheng-hang Zheng
- State Key Laboratory of Clean Energy Utilization
- State Environmental Protection Engineering Center for Coal-Fired Air Pollution Control
- Zhejiang University
- Hangzhou 310027
- China
| | - Yong-xin Zhang
- State Key Laboratory of Clean Energy Utilization
- State Environmental Protection Engineering Center for Coal-Fired Air Pollution Control
- Zhejiang University
- Hangzhou 310027
- China
| | - Zhe-wei Xu
- State Key Laboratory of Clean Energy Utilization
- State Environmental Protection Engineering Center for Coal-Fired Air Pollution Control
- Zhejiang University
- Hangzhou 310027
- China
| | - Li Wang
- State Key Laboratory of Clean Energy Utilization
- State Environmental Protection Engineering Center for Coal-Fired Air Pollution Control
- Zhejiang University
- Hangzhou 310027
- China
| | - Cun-jie Li
- State Key Laboratory of Clean Energy Utilization
- State Environmental Protection Engineering Center for Coal-Fired Air Pollution Control
- Zhejiang University
- Hangzhou 310027
- China
| | - Xiang Gao
- State Key Laboratory of Clean Energy Utilization
- State Environmental Protection Engineering Center for Coal-Fired Air Pollution Control
- Zhejiang University
- Hangzhou 310027
- China
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