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言語種別	英語
発行・発表の年月	2025/08
形態種別	学術論文
査読	査読あり
標題	Presence of unculturable bacteria in the permeate of microfiltration membranes with various pore-sizes in wastewater treatment
執筆形態	共著
掲載誌名	Journal of Water Process Engineering
掲載区分	国外
出版社・発行元	Elsevier
巻・号・頁	76,pp.108182
著者・共著者	Shuai Zhou, Taro Urase and Saki Goto
概要	Microfiltration (MF) membranes are not completely effective at removing bacteria due to the presence of ultrasmall bacteria and the deformability of bacterial cells. This study investigated the bacterial communities in the permeate of a membrane bioreactor (MBR) system and demonstrated that bacterial community composition varied with membrane pore size. Unculturable bacteria affiliated with Candidatus Parcubacteria (OD1) and Candidatus Omnitrophica (OP3) were enriched in the permeate, whereas Planctomycetes were largely retained. Functional prediction of the bacterial communities suggested that smaller pore sizes reduced the abundance of antibiotic resistance gene (ARG)-associated bacteria, while simultaneously enriching bacteria with high biofilm-forming potential. Additionally, chlorine-resistant bacteria (CRB), including pathogenic genera, were found to be enriched in the permeate.
DOI	10.1016/j.jwpe.2025.108182
外部リンクURL	https://doi.org/10.1016/j.jwpe.2025.108182