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Efficient degradation of 4-fluorophenol under dielectric barrier discharge plasma treatment using Cu/Fe-AO-PAN catalyst: Role of H2O2 production
Chemical Engineering Journal ( IF 15.1 ) Pub Date : 2020-11-03 , DOI: 10.1016/j.cej.2020.127577
Xiaojing Wang , Peng Wang , Qiao Wang , Peng Xu , Chunyan Yang , Yanjun Xin , Guangshan Zhang

The enhancement effect of Cu/Fe-amination-polyacrylonitrile (Cu/Fe-AO-PAN) as a catalyst for H2O2 produced by dielectric barrier discharge plasma (DBDP) on 4-fluorophenol (4-FP) degradation was explored. The addition of Cu/Fe-AO-PAN significantly increased the 4-FP removal rate and degradation energy efficiency from 61.0% and 1777 mg kWh-1 to 75.6% and 2203 mg kWh-1, respectively. The homologous total organic carbon (TOC) removal and defluorination efficiency were both increased (from 52.1% to 63.0% and 48.0% to 54.2%, respectively). The role of H2O2 production was investigated by influencing parameter analysis and radical scavenging experiments. •OH was verified to be a reactive species that increased 4-FP abatement, and was generated through electron transfer and binuclear metal complex formation between Cu/Fe-AO-PAN and H2O2 during the Fenton-like process. This study provides a new insight into efficient wastewater treatment under DBDP process.



中文翻译:

使用Cu / Fe-AO-PAN催化剂在电介质阻挡放电等离子体处理下4-氟苯酚的有效降解:H 2 O 2生产的作用

探索了Cu / Fe胺化聚丙烯腈(Cu / Fe-AO-PAN)作为介电质阻挡放电等离子体(DBDP)产生的H 2 O 2催化剂对4-氟苯酚(4-FP)降解的促进作用。Cu / Fe-AO-PAN的添加显着提高了4-FP去除率和降解能效,从61.0%和1777 mg kWh -1分别增加到75.6%和2203 mg kWh -1。同源总有机碳(TOC)的去除和脱氟效率均增加(分别从52.1%增加到63.0%,从48.0%增加到54.2%)。H 2 O 2的作用通过影响参数分析和自由基清除实验研究了生产。•OH被证实是增加4-FP减排的反应性物质,并且是通过Fenton样过程中Cu / Fe-AO-PAN与H 2 O 2之间的电子转移和双核金属络​​合物形成而生成的。这项研究为DBDP流程下的高效废水处理提供了新的见解。

更新日期:2020-11-03
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