气液混合脉冲放电再生吸附苯酚的活性炭  

Regeneration of phenol adsorbed activated carbon by gas-liquid mixed pulse discharge

作　　者：李娜 彭邦发 姜楠[2] 商莹 李杰[2] 吴彦[2] LI Na;PENG Bangfa;JIANG Nan;SHANG Ying;LI Jie;WU Yan(School of Environmental Science and Technology,Dalian University of Technology,Dalian 116000,China;School of Electrical Engineering,Dalian University of Technology,Dalian 116000,China)

机构地区：[1]大连理工大学环境学院,辽宁大连116000 [2]大连理工大学电气工程学院,辽宁大连116000

出　　处：《化工环保》2022年第5期592-597,共6页Environmental Protection of Chemical Industry

基　　金：国家自然科学基金项目(21876070)。

摘　　要：采用多针-板鼓泡气液混合纳秒脉冲放电等离子体系统对吸附苯酚饱和的活性炭进行再生。考察了外加电压、初始溶液电导率、初始溶液pH以及活性炭与高压电极之间的距离对活性炭再生效果的影响,表征了放电处理后活性炭表面官能团的变化。实验结果表明:在高低压电极间距25 mm、初始溶液电导率5 μS/cm、初始溶液pH=6、活性炭与高压电极之间距离0 mm的条件下,活性炭再生效果最好,再生率为126%,能量效率为15.1 kg/(kW·h)。表征结果显示,再生炭表面的O—H、C=C、C=O、C—O等官能团的含量均增加。The activated carbon saturated with phenol was regenerated in a multi-needle-plate bubbled gas-liquid mixed nanosecond pulse discharge plasma system.The effects of applied voltage,initial solution conductivity,initial solution pH and distance between activated carbon and high voltage electrode on activated carbon regeneration were investigated.The changes of functional groups on the activated carbon surface after discharge treatment were characterized.The experimental results show that under the conditions of electrode?spacing 25 mm,initial solution conductivity 5 μS/cm,initial solution pH 6,distance between activated carbon and high voltage electrode 0 mm,the activated carbon regeneration effect is the best with 126% of regeneration rate and 15.1 kg/(kW·h) of energy efficiency.The characterization results show that the content of O—H,C=C,C=O,C—O and other functional groups on the surface of the regenerated carbon increased.

关 键 词：气液混合脉冲放电 等离子体 苯酚 活性炭再生 

分 类 号：X701[环境科学与工程—环境工程]