Comparison of the Oil Degradation Ability of Free and Immobilized Microorganisms under Single Factor Condition
In order to study microorganisms application in bioremediation of oil contaminated soil, high-efficiency oil-degrading strains SM-1 and MM-7 were screened as experimental strains. The natural organic material (YJ-07) was designed as a carrier to obtain immobilized microorganism by adsorption method. The effect of different single factors on both free and immobilized oil-degrading strains were investigated. The results show that single factors including pH, initial oil concentration, inoculation quantity and salinity have a certain influence on oil degradation. Different strains have their particular optimum degradation conditions. The oil degradation efficiency of immobilized strain is better than free strain in every single-factor and the optimum condition range and the oil degradation rate of immobilized strain is higher than free strain by 10%-43%, so immobilized strain has greater tolerance for changes of environmental factors. The degradation efficiency of mixed strains is slightly better than the single strain.
ZHANG Xiuxia XU Nana QIN Lijiao BAI Xuejing LIU Yongbo KONG Tiantian
Department of Environmental Science and Engineering, China University of Petroleum, Qingdao 266555, Shandong, China
国际会议
2011 International Symposium on Environmental Science and Technology(2011 环境科学与技术国际会议 2011 ISEST)
广东东莞
英文
822-827
2011-06-01（万方平台首次上网日期，不代表论文的发表时间）