Biodegradation of heavy oils by halophilic bacterium  

作　　者：Ruixia Hao , Anhuai Lu School of Earth and Space Sciences, Peking University, Beijing 100871, China 

出　　处：《Progress in Natural Science:Materials International》2009年第8期997-1001,共5页自然科学进展·国际材料（英文版）

基　　金：supported by the National Basic Research Program of China (2007CB815601) ;CNPC Innovation Funds. In addition,

摘　　要：A halophilic bacterial strain TM-1 was isolated from the reservoir of the Shengli oil field in East China. Strain TM-1, which was found to be able to degrade crude oils, is a gram-positive non-motile bacterium with a coccus shape that can grow at temperatures of up to 58 ~C and in 18% NaC1 solution. Depending on the culture conditions, the organism may occur in tetrads. In addition, strain TM-1 pro- duced acid from glucose without gas formation and was catalase-negative. Furthermore, strain TM-1 was found to be a facultative aer- obe capable of growth under anaerobic conditions. Moreover, it produced butylated hydroxytoluene, 1,2-benzenedicarboxylic acid-bis ester and dibutyl phthalate and could use different organic substrates. Laboratory studies indicated that strain TM-1 affected different heavy oils by degrading various components and by changing the chemical properties of the oils. In addition, growth of the bacterium in heavy oils resulted in the loss of aromatic hydrocarbons, resins and asphaltenes, and enrichment with light hydrocarbons and an overall redistribution of these hydrocarbons. 2009 National Natural Science Foundation of China and Chinese Academy of Sciences. Published by Elsevier Limited and Science in China Press. All rights reserved.A halophilic bacterial strain TM-1 was isolated from the reservoir of the Shengli oil field in East China. Strain TM-1, which was found to be able to degrade crude oils, is a gram-positive non-motile bacterium with a coccus shape that can grow at temperatures of up to 58 °C and in 18% NaCl solution. Depending on the culture conditions, the organism may occur in tetrads. In addition, strain TM-1 produced acid from glucose without gas formation and was catalase-negative. Furthermore, strain TM-1 was found to be a facultative aerobe capable of growth under anaerobic conditions. Moreover, it produced butylated hydroxytoluene, 1,2-benzenedicarboxylic acid-bis ester and dibutyl phthalate and could use different organic substrates. Laboratory studies indicated that strain TM-1 affected different heavy oils by degrading various components and by changing the chemical properties of the oils. In addition, growth of the bacterium in heavy oils resulted in the loss of aromatic hydrocarbons, resins and asphaltenes, and enrichment with light hydrocarbons and an overall redistribution of these hydrocarbons.

关 键 词：Halophilic bacterium METABOLITE Heavy oil DEGRADATION 

分 类 号：X172[环境科学与工程—环境科学]