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Ti/RuO 2 -IrO 2 -SnO 2 Anode for Electrochemical Degradation of Pollutants in Pharmaceutical Wastewater: Optimization and Degradation Performances

Author

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  • Guozhen Zhang

    (Key Laboratory of Yellow River Water Environment in Gansu Province, Lanzhou Jiaotong University, Lanzhou 730070, China
    School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China)

  • Xingxing Huang

    (Key Laboratory of Yellow River Water Environment in Gansu Province, Lanzhou Jiaotong University, Lanzhou 730070, China
    School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China)

  • Jinye Ma

    (Key Laboratory of Yellow River Water Environment in Gansu Province, Lanzhou Jiaotong University, Lanzhou 730070, China
    School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China)

  • Fuping Wu

    (Key Laboratory of Yellow River Water Environment in Gansu Province, Lanzhou Jiaotong University, Lanzhou 730070, China
    School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China)

  • Tianhong Zhou

    (Key Laboratory of Yellow River Water Environment in Gansu Province, Lanzhou Jiaotong University, Lanzhou 730070, China
    School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China)

Abstract

Electrochemical oxidation technology is an effective technique to treat high-concentration wastewater, which can directly oxidize refractory pollutants into simple inorganic compounds such as H 2 O and CO 2 . In this work, two-dimensionally stable anodes, Ti/RuO 2 -IrO 2 -SnO 2 , have been developed in order to degrade organic pollutants from pharmaceutical wastewater. Characterization by scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), and X-ray diffraction (XRD) showed that the oxide coating was successfully fabricated on the Ti plate surface. Electrocatalytic oxidation conditions of high concentration pharmaceutical wastewater was discussed and optimized, and the best results showed that the COD removal rate was 95.92% with the energy consumption was 58.09 kW·h/kgCOD under the electrode distance of 3 cm, current density of 8 mA/cm 2 , initial pH of 2, and air flow of 18 L/min.

Suggested Citation

  • Guozhen Zhang & Xingxing Huang & Jinye Ma & Fuping Wu & Tianhong Zhou, 2020. "Ti/RuO 2 -IrO 2 -SnO 2 Anode for Electrochemical Degradation of Pollutants in Pharmaceutical Wastewater: Optimization and Degradation Performances," Sustainability, MDPI, vol. 13(1), pages 1-12, December.
    • Handle: RePEc:gam:jsusta:v:13:y:2020:i:1:p:126-:d:467963
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