Prospective Study of Bacillus sphaericus and Pseudomonas aeruginosa as The Microbial Enhanced Oil Recovery Agents

[摘要] Microbial Enhanced Oil Recovery (MEOR) is a microbial-based technology to obtain the maximum oil gaining in the oil reservoirs. The adapted bacterial as MEOR agents should be able to produce biosurfactant, high emulsification index values (E24) and capable of lowering the surface-tension in crude oil. The present study undertakes the applicability of two bacterial species Bacillus sphaericus and Pseudomonas aeruginosa as MEOR agents. Both isolate as indigenous bacteria from West Java oil sludge. The aim of this study is to obtain the best biosurfactant-producing microbe with the highest emulsification index value and the lowest surface-tension in crude oil. Our result shows that P. aeruginosa is more suitable than B. sphaericus to be used as MEOR agent with the highest emulsification index values (by 65%). This microbe is also able to decrease the surface-tension of crude oil by 7 dyne cm-1. Concurrently, B. sphaericus obtains 55% of emulsification index values and is capable of decreasing the surface-tension of crude oil by 2 dyne/cm. P. aeruginosa is more suitable than B. sphaericus to be used as MEOR agent

[发布机构] Departement of Biology, Padjadjaran University (UNPAD), Jl. Raya Bandung-Sumedang KM. 21, Jatinangor; 45363, Indonesia^1

[效力级别] 经济学

[关键词] Bacillus sphaericus;Bacterial species;Emulsification index;Indigenous bacteria;Microbial enhanced oil recoveries;Microbial enhanced oil recovery (MEOR);Prospective study;Pseudomonas aeruginosa