低温等离子体技术同步去除水中Cr(Ⅵ)和苯酚的研究  

The simultaneous removal of Cr(Ⅵ) and phenol by non-thermal plasma

作　　者：刘华瑜 宋泽群 宋超 王曙光[1] Liu Huayu;Song Zequn;Song Chao;Wang Shuguang(School of Environmental Science and Engineering,Shandong University,Qingdao 266200,China)

机构地区：[1]山东大学环境科学与工程学院,山东青岛266200

出　　处：《工业水处理》2020年第4期35-38,43,共5页Industrial Water Treatment

基　　金：山东大学基本科研业务费(2018 gN012);国家自然科学基金青年科学基金项目(21808127)。

摘　　要：利用介质阻挡放电低温等离子体技术实现了废水中Cr(Ⅵ)和苯酚的同步去除。研究表明,低温等离子体对苯酚和Cr(Ⅵ)有较强的去除能力。其中·OH在苯酚氧化降解过程中起主要作用,而·OH的消耗能够明显促进Cr(Ⅵ)的还原。分析了苯酚和Cr(Ⅵ)共存条件下污染物的去除效果,发现去除过程中苯酚和Cr(Ⅵ)存在协同作用:苯酚能够与·OH发生反应,增加还原性·H含量,促进Cr(Ⅵ)的还原;Cr(Ⅵ)通过消耗还原性物质,间接增加了与苯酚反应的·OH含量,促进苯酚的降解。The simultaneous removal of Cr(Ⅵ)and phenol in the wastewater is achieved by the dielectric barrier discharge non-thermal plasma.The results show that phenol and Cr(Ⅵ)can be effectively removed via non-thermal plasma.Besides,·OH plays a major role in the oxidative degradation process of phenol,whereas the consumption of·OH is obviously beneficial to the reduction of Cr(Ⅵ).Significant synergistic effect between phenol and Cr(Ⅵ)is found by analyzing the removal efficiency of pollutants under the coexistence of phenol and Cr(Ⅵ).The results con-firm that phenol can react with·OH and increased the content of reducing·H,thereby promoting the reduction of Cr(Ⅵ).Meanwhile,Cr(Ⅵ)indirectly increases the content of·OH that reacted with phenol by consuming the redu-cing substances,which improves the oxidative degradation of phenol.

关 键 词：介质阻挡放电 低温等离子体 Cr(Ⅵ) 苯酚 

分 类 号：X703[环境科学与工程—环境工程]