title: Cometabolic degradation of lincomycin in a Sequencing Batch Biofilm Reactor (SBBR) and its microbial community.
abstract: Cometabolism technology was employed to degrade lincomycin wastewater in Sequencing Batch Biofilm Reactor (SBBR). In contrast with the control group, the average removal rate of lincomycin increased by 56.0% and Total Organic Carbon (TOC) increased by 52.5% in the cometabolic system with glucose as growth substrate. Under the same condition, Oxidation-Reduction Potential (ORP) was 85.1±7.3mV in cometabolic system and 198.2±8.4mV in the control group, indicating that glucose changed the bulk ORP and created an appropriate growing environment for function bacteria. Functional groups of lincomycin were effectively degraded in cometabolic system proved by FTIR and GC-MS. Meanwhile, results of DGGE and 16S rDNA showed great difference in dominant populations between cometabolic system and the control group. In cometabolic system, Roseovarius (3.35%), Thiothrix (2.74%), Halomonas (2.49%), Ignavibacterium (2.02%), and TM7_genus_incertae_sedis (1.93%) were verified as dominant populations at genus level. Cometabolism may be synergistically caused by different functional dominant bacteria.
authors.affiliation: Key Laboratory of the Three Gorges Reservoir's Eco-Environments, Chongqing University, Chongqing, PR China.
authors.forename: Yancheng
authors.initials: Y
authors.lastname: Li
authors.affiliation: Key Laboratory of the Three Gorges Reservoir's Eco-Environments, Chongqing University, Chongqing, PR China.
authors.forename: Jian
authors.initials: J
authors.lastname: Zhou
authors.affiliation: Key Laboratory of the Three Gorges Reservoir's Eco-Environments, Chongqing University, Chongqing, PR China.
authors.forename: Benzhou
authors.initials: B
authors.lastname: Gong
authors.affiliation: Key Laboratory of the Three Gorges Reservoir's Eco-Environments, Chongqing University, Chongqing, PR China.
authors.forename: Yingmu
authors.initials: Y
authors.lastname: Wang
authors.affiliation: Key Laboratory of the Three Gorges Reservoir's Eco-Environments, Chongqing University, Chongqing, PR China. Electronic address: hq0980@126.com.
authors.forename: Qiang
authors.initials: Q
authors.lastname: He
mesh_terms: D001419:Bacteria / Q000378:metabolism; D018407:Bacterial Physiological Phenomena; D018441:Biofilms; D019149:Bioreactors / Q000382:microbiology*; D008034:Lincomycin / Q000378:metabolism*; D010084:Oxidation-Reduction; D014865:Waste Disposal, Fluid / Q000379:methods; D062065:Wastewater / Q000382:microbiology*
chemical_list: D008034:Lincomycin; D062065:Wastewater
keywords: 16S rDNA; Cometabolism; Functional groups; Lincomycin; Microbial community