基于穿透电极的Electro-peroxone技术降解布洛芬

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Abstract

By combining conventional ozonation with in situ electro-generation of hydrogen peroxide (H₂O₂) to enhance ozone (O₃) transformation to hydroxyl radicals (·OH), the electro-peroxone (E-peroxone) treatment can significantly enhance the oxidation of ozone-refractory pollutants. A flow-through E-peroxone system was established using a reticulated vitreous carbon (RVC) as the cathode. The effects of main operational parameters (e.g., current and flow rate) on ibuprofen abatement were evaluated systematically. The results showed that the E-peroxone process could completely abate ibuprofen (initial concentration 2.5mg/L) in a synthetic solution in 30min, whereas conventional ozonation and electrolysis could only abated 64% and 59% of ibuprofen, respectively. The electrical energy consumption per log-order removal (EEO, kWh/m³-log) of ibuprofen by ozonation was 5.30kWh/m³-log, but was only 0.76kWh/m³-log by the E-peroxone process under the conditions of 100mA, 250mL/min gas flow rate, 8mg/L ozone and 300mL/min solution flow rate. Increasing the solution flow rate to increase the kinetics of electrode mass transfer, the rate of ibuprofen abatement could be further enhanced in the flow-through E-peroxone process. These results suggest that flow-through E-peroxone process may provide an effective and energy-efficient alternative for the abatement of refractory pollutants in water treatment.

Key words： electro-peroxone flow through reticulated vitreous carbon ibuprofen

Received: 17 September 2018

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X522

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	Articles by authors
	CUI Xin-xin
	LIN Zhi-rong
	WANG Hui-jiao
	YU Gang
	WANG Yu-jue

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CUI Xin-xin,LIN Zhi-rong,WANG Hui-jiao等. Effective degradation of ibuprofen by flow-through electro-peroxone process[J]. CHINA ENVIRONMENTAL SCIENCECE, 2019, 39(4): 1619-1626.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2019/V39/I4/1619

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