活性炭固定耐冷菌对废水中硝基苯的降解  

Biodegradation of the Nitrobenzene Wastewater by a Strain Immobilized on Granular Activated Carbon

作　　者：徐成斌[1] 王延刚[1] 李瑶瑶[1] 马溪平[1] 包坤[1] 牟安毅[1] 赵全[1] 

机构地区：[1]辽宁大学环境学院,辽宁沈阳110036

出　　处：《环境科学与技术》2013年第S1期184-187,共4页Environmental Science & Technology

基　　金：辽宁环境科研教育"123"工程资助(CEPF2009-123-2-8);2011年辽宁省科学技术计划项目(2011230009);辽宁大学环境学院重点学科资助项目

摘　　要：文章研究了颗粒活性炭固定鲍曼不动杆菌对硝基苯的降解情况。考查了活性炭对硝基苯的吸附等温线,符合Freulndlich经验公式,同时探究了其最佳投加量为5 mg/mL。较单纯微生物降解来说,在温度为15℃,pH为7,摇床转速140 r/min的条件下,生物活性炭降解浓度为200 mg/L的硝基苯所用时间大大缩短,而400 mg/L的硝基苯不能直接被菌株降解,固定化后84 h可基本完全降解,并且由于微生物作用活性炭得到再生。Effects of nitrobenzene biodegradation by Acinetobacter baumannii immobilized on granular activated carbon is studied.To research the granular activated carbon adsorption isotherms of nitrobenzene and which meet Freulndlich empirical formula and the optimum dosage is 5 mg/mL of granular activated carbon.The biodegradation time is shortened for 200 mg/L nitrobenzene with biological activated carbon present which compares with the bacteria before immobilized.But for 400 mg/L nitrobenzene could not been directly biotransformed by the bacteria due to the intense inhibition.However,nitrobenzene at the same concentration is biodegraded in 46 h by the biological activated carbon when the condition is 15 ℃,pH 7,140 r/min.Activated carbon is regenerated by microbial action.

关 键 词：硝基苯 颗粒活性炭 固定化 生物降解 鲍曼不动杆菌 

分 类 号：X703[环境科学与工程—环境工程]