生物膜电极法降解水中2-萘酚的影响因素  

Influencing Factors of 2-Naphthol Degradation in Water by Biofilm-electrode Method

作　　者：王璇[1] 陈启元[1] 

机构地区：[1]内蒙古大学生态与环境学院内蒙古自治区环境污染控制与废物资源化重点实验室内蒙古自治区煤化工废水处理与资源化工程技术研究中心,呼和浩特010021

出　　处：《高等学校化学学报》2017年第5期855-859,共5页Chemical Journal of Chinese Universities

基　　金：内蒙古自治区高等学校科学研究项目(批准号:NJZY14017)资助~~

摘　　要：以2-萘酚为目标污染物,在对比电化学法和微生物法降解效果的基础上,研究了隔膜式电解体系中基体材料性质、电解池隔膜种类、温度和电流密度对生物膜电极法降解2-萘酚作用效率的影响.结果表明,生物膜电极法相比传统的电化学法和微生物法对2-萘酚类污染物的去除有一定优势,其作用效果与微生物生长状态有直接关系.以碳毡为基体的生物膜电极降解效果起始阶段优于钛网基生物膜电极,但一段时间后钛网基生物膜电极降解性能更稳定.阴离子交换隔膜电解池体系对2-萘酚的降解效果优于阳离子交换隔膜电解池体系,35℃条件下0.5mA/cm^2电流密度是最佳作用条件.With 2-naphthol as the target contaminants, the influences of matrix material, diaphragm temperature and current density on the degradation rate of 2-naphthol with biofilm-electrode method were studied. The results show that biofilm-electrode method has some advantages over conventional electrochemical and microbial methods for the removal of 2-naphthol pollutants, and its effect is directly related to the growth state of microorganisms. The biodegradation effect of the biofilm based on carbon felt was better than that of the titanium net-based biofilm electrode at the beginning, but the degradation performance of the Ti-based biofilm electrode was more stable after a certain period of time. Anion exchange membrane electrolyzer system is superior to cation exchange membrane electrolyzer system in the degradation of 2-naphthol. The optimal current density is O. 50 mA/cm2 at 35 ℃.

关 键 词：生物膜电极法 多环芳烃 2-萘酚 降解效率 影响因素 

分 类 号：O646[理学—物理化学]