CAJ | 학술논문

采用室内模拟方法研究热带假丝酵母菌(Candida tropicalis)和粪链球菌(Streptococcus faecalis)对石油污染土壤的联合修复,并监测修复过程中土壤脱氢酶活性、石油污染组分的变化. 结果表明:酵母菌-细菌混合菌剂在对石油烃的去除中表现出协同作用,连续培养32 d后混合菌处理组对总石油烃(TPH)的去除率达到29.9%,较单菌处理组高约50%;混合菌处理组脱氢酶活性高于单菌,并与石油烃去除率呈很好的相关性;前期低分子量烷烃降解效果明显,对于C15～C21的高分子量烷烃的降解效果主要在第32天时显现.
채용실내모의방법연구열대가사효모균(Candida tropicalis)화분련구균(Streptococcus faecalis)대석유오염토양적연합수복,병감측수복과정중토양탈경매활성、석유오염조분적변화. 결과표명:효모균-세균혼합균제재대석유경적거제중표현출협동작용,련속배양32 d후혼합균처리조대총석유경(TPH)적거제솔체도29.9%,교단균처리조고약50%;혼합균처리조탈경매활성고우단균,병여석유경거제솔정흔호적상관성;전기저분자량완경강해효과명현,대우C15～C21적고분자량완경적강해효과주요재제32천시현현.
The effect of a microbial mixture of Candida tropicalis and Streptococcus faecalis on the remediation of petroleum-contaminated soil was evaluated in a laboratory. The changes of dehydrogenase activity of soil and petroleum constituents were monitored during the bioremediation process. The results showed that the microbial mixture showed synergistic effects in the removal of petroleum hydrocarbons. In the mixed microorganisms treatment group, 29.9% of the total petroleum hydrocarbon (TPH) was removed after 32 days of incubation, which was 50% higher than that observed in the single microorganism-treatment groups. Higher dehydrogenase activity was observed in the mixed microorganisms treatment group, and a positive correlation was obtained between dehydrogenase activity and biodegradation efficiency. Within the early stage of treatment, low molecular weight alkanes were degraded significantly, while high molecular weight components (C15-C21) were metabolized beginning from 32 days.