漆酶/ABTS介体系统对蒽的降解研究  

Degradation of Anthracene in Wastewater by Laccase/ABTS Mediator System

作　　者：任大军[1] 许琴[1] 张元元[1] 张淑琴[1] 张惠灵[1] 

机构地区：[1]武汉科技大学资源与环境工程学院,武汉430081

出　　处：《工业安全与环保》2013年第12期1-3,53,共4页Industrial Safety and Environmental Protection

基　　金：国家自然科学基金项目(41201306);国家科技支撑计划项目(2012BAC02B04)

摘　　要：以2,2-联氮-二(3-乙基-苯并噻唑-6-磺酸)二铵盐(ABTS)为介体,研究了漆酶/ABTS介体系统对蒽的降解效果,并考察了pH值、ABTS浓度和漆酶添加量对低浓度蒽降解效果的影响。同时,分析了漆酶/ABTS介体系统降解蒽的作用机理。结果表明:实验的最佳条件是pH4.5、ABTS浓度0.3 mmol/L和漆酶加入量1 U/mL,其降解率可达到90%以上;蒽被ABTS的氧化态介体作用,其氧化降解过程符合一级动力学规律。2, 2′-azino-bis-(3-ethylbenzthiazoline-6-sulfonic acid)(ABTS)is selected as a mediator and the degradation of anthracene by laccase/ABTS mediator system is studied. The effects of pHvalue, the concentration of ABTS and laccase addition on the degradation are investigated. Besides, the degrading mechanism of anthracene is analyzed. The results show that the optimal conditions of treatment should be pH4.5,ABTS concentration 0.3 mmol/Land laccase addition 1 U/mL and the degradation rate can reach more than 90%. Anthracene is degraded by oxidation state mediator of ABTS and the process of oxidative degradation accords with the first-order reaction.

关 键 词：漆酶/ABTS介体系统 蒽 降解 

分 类 号：TQ241.55[化学工程—有机化工]