月桂酰基谷氨酸钠促进江河水体面源污染油生物降解研究  

Study on Potamic Water Surface Polluted Oil Biodegradation Accelerated by Sodium Lauroyl Glutamate

作　　者：方建华[1] 李建武 张楠[3] 郑哲[1] 刘坪[1] 

机构地区：[1]后勤工程学院军事油料应用与管理工程系,重庆401311 [2]驻中石油兰州石化分公司军事代表室,甘肃兰州730060 [3]后勤工程学院国防建筑规划与环境工程系,重庆401311

出　　处：《当代化工》2017年第2期204-206,210,共4页Contemporary Chemical Industry

基　　金：国家自然科学基金资助项目;项目号:51375491;重庆市自然基金资助项目;项目号:CSTC2014jcyj A50021;院创新基金资助项目YZ13-43703;沙坪坝区科委资助项目;项目号:SF201508

摘　　要：以江河水体中典型微生物为本源微生物,考察了月桂酰基谷氨酸钠对江河水体中常见的面源油污染物生物降解性能的影响。结果表明:月桂酰基谷氨酸钠可明显促进柴油、内燃机油、液压油污染的水体中油污染物的生物降解性能,其降解作用机理是由于月桂酰基谷氨酸钠的表面活性剂作用,增强了烃类化合物从不可被微生物利用的非水相到可以被微生物利用的水相的传质速率,进而增大了烃类"暴露"于微生物细胞膜的浓度,使微生物与底物接触机会增多,另一方面作为微生物营养物质加速了微生物生长与繁殖,使微生物数量增多,两者共同作用促进了污染油的生物降解。The potamic water surface polluted oil biodegradation accelerated by sodium lauroyl glutamate was studied by mean of substrate microbe-type microbe in potamic water. The results show that the sodium lauroyl glutamate can acceletate biodegradation of pollution oil which containing diesel oil,internal-combustion engine lubricating oil and hydraulic pressure lubricating oil. Its biodegradation mechanism is inferred that the sodium lauroyl glutamate can effectively decrease interracial tension of the culture fluids and accelerate microorganism reproduction. This indicates that the sodium lauroyl glutamate as surfactant can on one hand increase the contact areas of oil and water, thus providing more opportunity for microorganism to take up the substrate. On the other hand, the sodium lauroyl glutamate acted as microbial nutrition to promote microorganism growth, thus increasing microbe populations. As a result, the biodegradability of polluted oil was markedly enhanced.

关 键 词：生物降解性 微生物 作用机理 表面活性剂 

分 类 号：O623.627[理学—有机化学]