Denitrification performance and microbial diversity in a packed-bed bioreactor using PCL as carbon source and biofilm carrier

Applied Microbiology and Biotechnology
Weizhong WuJianlong Wang

Abstract

Polycaprolactone (PCL) was used as both carbon source and biofilm support for denitrifying bacteria in a packed-bed bioreactor. The denitrification performance and microbial diversity were investigated. The microbial community of biofilm developed on the surface of PCL in the reactor was analyzed by pyrosequencing method. The experimental results showed the average nitrate removal efficiency reached 93 % at stable operation. ESEM observation and FTIR analysis were conducted to characterize the PCL structure before and after microbial utilization. For the microbial community, Betaproteobacteria predominated, and most of the PCL-degrading denitrifying bacteria assigned to the family of Comamonadacea. Denitrifying bacteria accounted for more than 20 % in the total population, indicating that PCL is a good carrier and carbon source for biological denitrification.

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Citations

Jan 3, 2015·Microbiological Research·Xiaofei Xu, Xuewu Zhang
Sep 4, 2015·Environmental Science and Pollution Research International·Qian ZhangXiaoyi Xu
Mar 11, 2016·Applied Microbiology and Biotechnology·Zhiqiang ShenJianlong Wang
Jul 12, 2016·Biotechnology Advances·Jianlong Wang, Libing Chu
Nov 1, 2016·Journal of Industrial Microbiology & Biotechnology·Ruixia HaoJianbing Li
Nov 27, 2019·International Journal of Environmental Research and Public Health·Qian ZhangLijie Zhang
Aug 15, 2020·Critical Reviews in Biotechnology·Hua ZhongHojae Shim
Nov 2, 2019·International Journal of Environmental Research and Public Health·Qian ZhangTiantao Zhao
Jan 16, 2020·International Journal of Environmental Research and Public Health·Yongkui YangZhi Qiao
Mar 18, 2021·Environmental Science and Pollution Research International·George Kwame Amoako-NimakoFangmin Chen
Apr 12, 2021·The Science of the Total Environment·Feifan ZhangShiyang Li
May 20, 2021·Water Environment Research : a Research Publication of the Water Environment Federation·Xu ZhangBing Xu
Jul 3, 2021·The Science of the Total Environment·Yunmeng Pang, Jianlong Wang

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