title: Enhanced bioremediation of soil contaminated with viscous oil through microbial consortium construction and ultraviolet mutation.
abstract: This study focused on enhancing the bioremediation of soil contaminated with viscous oil by microorganisms and evaluating two strategies. Construction of microbial consortium and ultraviolet mutation were both effective applications in the remediation of soil contaminated with viscous oil. Results demonstrated that an interaction among the microorganisms existed and affected the biodegradation rate. Strains inoculated equally into the test showed the best remediation, and an optimal microbial consortium was achieved with a 7 days' degradation rate of 49.22%. On the other hand, the use of ultraviolet mutation increased one strain's degrading ability from 41.83 to 52.42% in 7 days. Gas chromatography and mass spectrum analysis showed that microbial consortium could treat more organic fractions of viscous oil, while ultraviolet mutation could be more effect on increasing one strain's degrading ability.
authors.affiliation: Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering, Sichuan University, Chengdu, Sichuan, People's Republic of China.
authors.forename: Jing
authors.initials: J
authors.lastname: Chen
authors.forename: Qiuyan
authors.initials: Q
authors.lastname: Yang
authors.forename: Taipeng
authors.initials: T
authors.lastname: Huang
authors.forename: Yongkui
authors.initials: Y
authors.lastname: Zhang
authors.forename: Ranfeng
authors.initials: R
authors.lastname: Ding