一组十二烷基苯磺酸钠生物降解的新研初探  

Biodegradation of Linear Alkyl Benzene Sulphonate

作　　者：向丽君[1] 王伯初[1] 段传人[1] 刘柳[1] 王庆红[1] 

机构地区：[1]重庆大学生物工程学院生物力学与组织工程教育部重点实验室,重庆400030

出　　处：《重庆大学学报（自然科学版）》2004年第10期71-74,共4页Journal of Chongqing University

基　　金：重庆市科委基金资助项目

摘　　要：将超声波和固定化细胞技术相结合,以阴离子表面活性剂废水中直链十二烷基苯磺酸钠(LAS)为研究对象,研究了低强度超声波作用于固定化微生物细胞对LAS降解的主要影响因素,并通过正交实验,以LAS的降解率r为主要指标,研究了低强度超声波干预的参数条件,结果表明:一定频率参数的低强度超声波能有效增强固定化细胞的生物活性并促进固定化细胞传质,实验以LAS初始浓度c为50mg/L的模拟废水为对象,在最适超声条件下LAS的降解率最高达83%,比固定化细胞不加载超声组提高9.5%以上。The paper researches on the degradation of LAS (Linear Alkyl benzene Sulphonate) by combining AS1.860 immobilized with low intensity ultrasonic irradiation. The paper also discusses the influence of pH, rotary velocity, LAS concentration and the condition of low intensity ultrasonic irradiation on the degradation of LAS, the degradation rate of LAS is the main index of our experiment, the results of orthogonal test shows that low ultrasonic irradiation can increase the metabolizing of microorganism cells and facilitate the biodegradation of immobilized cells to LAS, here we research the degradation condition of 50mg/L LAS simulation wastewater with low ultrasonic irradiation, and the results show that the influence is obvious, the optimization degradation rate is about 83%, nine point five percent higher than that of the immobilized cells without ultrasonic irradiation.

关 键 词：低强度超声波 固定化细胞 直链十二烷基苯磺酸钠 生物降解 

分 类 号：X172[环境科学与工程—环境科学]