Electrochemical reduction of nitrate has broad application prospects. However, in traditional electrochemical reduction of nitrate, the low value of oxygen produced by the anodic oxygen evolution reaction and the high overpotential limit its application. Seeking a more valuable and faster anodic reaction to form a cathode-anode integrated system with nitrate reaction can effectively accelerate the reaction rate of the cathode and anode, and improve the utilization of electrical energy. Sulfite, as a pollutant after wet desulfurization, has faster reaction kinetics in its oxidation reaction compared to the oxygen evolution reaction. Therefore, this study proposes an integrated cathodic nitrate reduction and anodic sulfite oxidation system. The effect of operating parameters (cathode potential, initial NO3--N concentration, and initial SO32--S concentration) on the integrated system was studied. Under the optimal operating parameters, the nitrate reduction rate in the integrated system reached 93.26% within 1 h, and the sulfite oxidation rate reached 94.64%. Compared with the nitrate reduction rate (91.26%) and sulfite oxidation rate (53.33%) in the separate system, the integrated system had a significant synergistic effect. This work provides a reference for solving nitrate and sulfite pollution, and promotes the application and development of electrochemical cathode-anode integrated technology.
机构:
Beijing Forestry Univ, Coll Environm Sci & Engn, Beijing 100083, Peoples R ChinaBeijing Forestry Univ, Coll Environm Sci & Engn, Beijing 100083, Peoples R China
Pang, L.
Wang, H.
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机构:
Beijing Forestry Univ, Coll Environm Sci & Engn, Beijing 100083, Peoples R ChinaBeijing Forestry Univ, Coll Environm Sci & Engn, Beijing 100083, Peoples R China
Wang, H.
Bian, Z. Y.
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机构:
Beijing Normal Univ, Coll Water Sci, Beijing 100875, Peoples R ChinaBeijing Forestry Univ, Coll Environm Sci & Engn, Beijing 100083, Peoples R China
机构:
Department of Environmental Science and Engineering, Harbin Institute of Technology, Harbin 150090, China
Department of Environmental Science and Engineering, Heilongjiang University, Harbin 150086, ChinaDepartment of Environmental Science and Engineering, Harbin Institute of Technology, Harbin 150090, China
Yu, Xiu-Juan
Wang, Hui
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机构:
Department of Environmental Science and Engineering, Harbin Institute of Technology, Harbin 150090, ChinaDepartment of Environmental Science and Engineering, Harbin Institute of Technology, Harbin 150090, China
Wang, Hui
Sun, De-Zhi
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机构:
Department of Environmental Science and Engineering, Harbin Institute of Technology, Harbin 150090, ChinaDepartment of Environmental Science and Engineering, Harbin Institute of Technology, Harbin 150090, China
Sun, De-Zhi
Wu, Lan
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机构:
Department of Environmental Science and Engineering, Harbin Institute of Technology, Harbin 150090, ChinaDepartment of Environmental Science and Engineering, Harbin Institute of Technology, Harbin 150090, China
Wu, Lan
Cui, Chong-Wei
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机构:
Department of Environmental Science and Engineering, Harbin Institute of Technology, Harbin 150090, ChinaDepartment of Environmental Science and Engineering, Harbin Institute of Technology, Harbin 150090, China
Cui, Chong-Wei
Harbin Gongye Daxue Xuebao/Journal of Harbin Institute of Technology,
2007,
39
(02):
: 262
-
265
机构:
Univ Sci & Technol China, Dept Chem, CAS Key Lab Urban Pollutant Convers, Hefei 230026, Peoples R China
USTC CityU, Adv Lab Environm Res & Technol, Suzhou 215123, Peoples R China
City Univ Hong Kong, Dept Biol & Chem, Hong Kong, Hong Kong, Peoples R ChinaUniv Sci & Technol China, Dept Chem, CAS Key Lab Urban Pollutant Convers, Hefei 230026, Peoples R China
Liu, Rong-Hua
Li, Wen-Wei
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机构:
Univ Sci & Technol China, Dept Chem, CAS Key Lab Urban Pollutant Convers, Hefei 230026, Peoples R China
USTC CityU, Adv Lab Environm Res & Technol, Suzhou 215123, Peoples R ChinaUniv Sci & Technol China, Dept Chem, CAS Key Lab Urban Pollutant Convers, Hefei 230026, Peoples R China
Li, Wen-Wei
Sheng, Guo-Ping
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机构:
Univ Sci & Technol China, Dept Chem, CAS Key Lab Urban Pollutant Convers, Hefei 230026, Peoples R China
USTC CityU, Adv Lab Environm Res & Technol, Suzhou 215123, Peoples R ChinaUniv Sci & Technol China, Dept Chem, CAS Key Lab Urban Pollutant Convers, Hefei 230026, Peoples R China
Sheng, Guo-Ping
Tong, Zhong-Hua
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机构:
Univ Sci & Technol China, Dept Chem, CAS Key Lab Urban Pollutant Convers, Hefei 230026, Peoples R ChinaUniv Sci & Technol China, Dept Chem, CAS Key Lab Urban Pollutant Convers, Hefei 230026, Peoples R China
Tong, Zhong-Hua
Lam, Michael Hon-Wah
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机构:
USTC CityU, Adv Lab Environm Res & Technol, Suzhou 215123, Peoples R China
City Univ Hong Kong, Dept Biol & Chem, Hong Kong, Hong Kong, Peoples R ChinaUniv Sci & Technol China, Dept Chem, CAS Key Lab Urban Pollutant Convers, Hefei 230026, Peoples R China
Lam, Michael Hon-Wah
Yu, Han-Qing
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机构:
Univ Sci & Technol China, Dept Chem, CAS Key Lab Urban Pollutant Convers, Hefei 230026, Peoples R China
USTC CityU, Adv Lab Environm Res & Technol, Suzhou 215123, Peoples R ChinaUniv Sci & Technol China, Dept Chem, CAS Key Lab Urban Pollutant Convers, Hefei 230026, Peoples R China