Systematic investigation and microbial community profile of indole degradation processes in two aerobic activated sludge systems.

ABSTRACT: Indole is widely spread in various environmental matrices. Indole degradation by bacteria has been reported previously, whereas its degradation processes driven by aerobic microbial community were as-yet unexplored. Herein, eight sequencing batch bioreactors fed with municipal and coking activated sludges were constructed for aerobic treatment of indole. The whole operation processes contained three stages, i.e. stage I, glucose and indole as carbon sources; stage II, indole as carbon source; and stage III, indole as carbon and nitrogen source. Indole could be completely removed in both systems. Illumina sequencing revealed that alpha diversity was reduced after indole treatment and microbial communities were significantly distinct among the three stages. At genus level, Azorcus and Thauer

SUBMITTER: Ma Q 

PROVIDER: S-EPMC4675989 | biostudies-literature | 2015 Dec

REPOSITORIES: biostudies-literature