title: Bacterial Community Structure Shifted by Geosmin in Granular Activated Carbon System of Water Treatment Plants.
abstract: We investigated the relation between the presence of geosmin in water and the bacterial community structure within the granular activated carbon (GAC) system of water treatment plants in South Korea. GAC samples were collected in May and August of 2014 at three water treatment plants (Sungnam, Koyang, and Yeoncho in Korea). Dissolved organic carbon and geosmin were analyzed before and after GAC treatment. Geosmin was found in raw water from Sungnam and Koyang water treatment plants but not in that from Yeoncho water treatment plant. Interestingly, but not surprisingly, the 16S rRNA clone library indicated that the bacterial communities from the Sungnam and Koyang GAC systems were closely related to geosmin-degrading bacteria. Based on the phylogenetic tree and multidimensional scaling plot, bacterial clones from GAC under the influence of geosmin were clustered with Variovorax paradoxus strain DB 9b and Comamonas sp. DB mg. In other words, the presence of geosmin in water might have inevitably contributed to the growth of geosmin degraders within the respective GAC system.
authors.affiliation: Department of Environmental Science and Engineering, Ewha Womans University, Seoul 03760, Republic of Korea.
authors.forename: Ngoc Dung
authors.initials: ND
authors.lastname: Pham
authors.affiliation: Department of Environmental Science and Engineering, Ewha Womans University, Seoul 03760, Republic of Korea.
authors.forename: Eun-Hee
authors.initials: EH
authors.lastname: Lee
authors.affiliation: K-water Institute, Korea Water Resources Corporation, Daejeon 34350, Republic of Korea.
authors.forename: Seon-Ha
authors.initials: SH
authors.lastname: Chae
authors.affiliation: Korea Water Forum, Seoul 34045, Republic of Korea.
authors.forename: Yongdeok
authors.initials: Y
authors.lastname: Cho
authors.affiliation: Bell Labs Seoul, Seoul 03909, Republic of Korea.
authors.forename: Hyejin
authors.initials: H
authors.lastname: Shin
authors.affiliation: Department of Environmental Science and Engineering, Ewha Womans University, Seoul 03760, Republic of Korea.
authors.forename: Ahjeong
authors.initials: A
authors.lastname: Son
mesh_terms: D001419:Bacteria / Q000145:classification / Q000235:genetics / Q000302:isolation & purification* / Q000378:metabolism; D044822:Biodiversity; D002606:Charcoal / Q000737:chemistry; D005618:Fresh Water / Q000032:analysis / Q000382:microbiology*; D008969:Molecular Sequence Data; D009284:Naphthols / Q000032:analysis* / Q000378:metabolism; D010802:Phylogeny; D014874:Water Pollutants, Chemical / Q000032:analysis* / Q000378:metabolism; D018508:Water Purification / Q000295:instrumentation* / Q000379:methods
chemical_list: D009284:Naphthols; D014874:Water Pollutants, Chemical; D002606:Charcoal; C001278:geosmin
keywords: bacterial community; cyanobacteria; geosmin; granular activated carbon; water quality; water treatment plant