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Insight into the Fe-Ni/biochar composite supported three-dimensional electro-Fenton removal of electronic industry wastewater.
Guo, Fang; Lou, Yaoyin; Yan, Qun; Xiong, Jianglei; Luo, Jiahao; Shen, Chikang; Vayenas, Dimitris V.
Afiliación
  • Guo F; School of Environmental and Civil Engineering, Jiangnan University, Wuxi, 214122, China.
  • Lou Y; College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China.
  • Yan Q; School of Environmental and Civil Engineering, Jiangnan University, Wuxi, 214122, China; Jiangsu Key Laboratory of Anaerobic Biotechnology, Wuxi, 214122, China; Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment, Suzhou, 215011, China. Electronic address: yanqun@ji
  • Xiong J; China Electronics System Engineering No. 2 Construction Co., Ltd, Wuxi, 214001, China.
  • Luo J; China Electronics System Engineering No. 2 Construction Co., Ltd, Wuxi, 214001, China.
  • Shen C; China Electronics System Engineering No. 2 Construction Co., Ltd, Wuxi, 214001, China.
  • Vayenas DV; Department of Chemical Engineering, University of Patras, Caratheodory 1, University Campus, GR-26504, Patras, Greece; Institute of Chemical Engineering and High Temperature Chemical Processes (FORTH/ICE-HT), Stadiou Str., Platani, GR-26504 Patras, Greece.
J Environ Manage ; 325(Pt B): 116466, 2023 Jan 01.
Article en En | MEDLINE | ID: mdl-36327605
For the efficient removal of the bio-refractory organic pollutants in the electronic industry wastewater, the Ni-Fe (oxides) modified three-dimension (3D) particle electrode was applied in electro-Fenton system (3D/EF), where iron ions were released from anode and deposited onto algal biochar (ABC) to prepare composite catalyst during reaction process. Firstly, scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS) and Brunauer-Emmett-Teller (BET) analysis were applied to confirm successful fabrication of the 3D particle electrode materials. Secondly, COD removal efficiency could reach about 80%, which was about 20% higher than that in 2D/EF system, under the optimized conditions as 2.0 g/L of Ni-ABC particle electrodes, initial pH of 3, 100 mL/min of aeration intensity and 20 mA/cm2 of applied current density. Thirdly, characterized using three-dimensional fluorescence spectroscopy and GC-MS analysis, it seemed that most of the macromolecular substances could be degraded, whereas mono-2-ethylhexyl phthalate (MEHP) was identified as the most abundant and representative compound. Finally, possible degradation pathway of MEHP in 3D/EF system was proposed including dealkylation, cleavage of C-O bond, and demethylation. Therefore, this study provides a new strategy in designing EF system employing bimetal doped biochar composite for an efficient elimination of organic pollutants within electronic industry wastewater.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Contaminantes Químicos del Agua / Aguas Residuales Idioma: En Revista: J Environ Manage Año: 2023 Tipo del documento: Article País de afiliación: China Pais de publicación: Reino Unido
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Contaminantes Químicos del Agua / Aguas Residuales Idioma: En Revista: J Environ Manage Año: 2023 Tipo del documento: Article País de afiliación: China Pais de publicación: Reino Unido