Huang Jianping, Yang Shisu, Zhang Siqi
School of Environmental and Municipal Engineering, North China University of Water Resources and Electric Power, Zhengzhou, 450011, China.
Biotechnol Lett. 2016 Nov;38(11):1875-1880. doi: 10.1007/s10529-016-2174-4. Epub 2016 Jul 13.
To compare the degradation performance and biodiversity of a polyvinyl alcohol-degrading microbial community under aerobic and anaerobic conditions.
An anaerobic-aerobic bioreactor was operated to degrade polyvinyl alcohol (PVA) in simulated wastewater. The degradation performance of the bioreactor during sludge cultivation and the microbial communities in each reactor were compared. Both anaerobic and aerobic bioreactors demonstrated high chemical oxygen demand removal efficiencies of 87.5 and 83.6 %, respectively. Results of 16S rDNA sequencing indicated that Proteobacteria dominated in both reactors and that the microbial community structures varied significantly under different operating conditions. Both reactors obviously differed in bacterial diversity from the phyla Planctomycetes, Chlamydiae, Bacteroidetes, and Chloroflexi. Betaproteobacteria and Alphaproteobacteria dominated, respectively, in the anaerobic and aerobic reactors.
The anaerobic-aerobic system is suitable for PVA wastewater treatment, and the microbial genetic analysis may serve as a reference for PVA biodegradation.
比较聚乙烯醇降解微生物群落在好氧和厌氧条件下的降解性能及生物多样性。
运行一个厌氧-好氧生物反应器以降解模拟废水中的聚乙烯醇（PVA）。比较了污泥培养期间生物反应器的降解性能以及每个反应器中的微生物群落。厌氧和好氧生物反应器的化学需氧量去除效率分别高达87.5%和83.6%。16S rDNA测序结果表明，两个反应器中变形菌门均占主导地位，且在不同运行条件下微生物群落结构差异显著。两个反应器在浮霉菌门、衣原体门、拟杆菌门和绿弯菌门的细菌多样性方面明显不同。厌氧和好氧反应器中分别以β-变形菌纲和α-变形菌纲为主。
厌氧-好氧系统适用于PVA废水处理，微生物基因分析可为PVA生物降解提供参考。
