[논문]The Presence of Significant Methylotrophic Population in Biological Activated Carbon of a Full-Scale Drinking Water Plant

Kim, Tae Gwan; Moon, Kyung-Eun; Cho, Kyung-Suk

doi:10.4014/jmb.1307.07048

[국내논문] The Presence of Significant Methylotrophic Population in Biological Activated Carbon of a Full-Scale Drinking Water Plant 원문보기

Journal of microbiology and biotechnology, v.23 no.12, 2013년, pp.1774 - 1778

Kim, Tae Gwan (Global Top5 Research Program, Department of Environmental Science and Engineering, Ewha Womans University) , Moon, Kyung-Eun (Global Top5 Research Program, Department of Environmental Science and Engineering, Ewha Womans University) , Cho, Kyung-Suk (Global Top5 Research Program, Department of Environmental Science and Engineering, Ewha Womans University)

Abstract ▼ AI-Helper

Methylotrophs within biological activated carbon (BAC) systems have not received attention although they are a valuable biological resource for degradation of organic pollutants. In this study, methylotrophic populations were monitored for four consecutive seasons in BAC of an actual drinking water plant, using ribosomal tag pyrosequencing. Methylotrophs constituted up to 5.6% of the bacterial community, and the methanotrophs Methylosoma and Methylobacter were most abundant. Community comparison showed that the temperature was an important factor affecting community composition, since it had an impact on the growth of particular methylotrophic genera. These results demonstrated that BAC possesses a substantial methylotrophic activity and harbors the relevant microbes.

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제안 방법

88° ). The plant train consists of river water intake/ screening, coagulation, flocculation, sedimentation, sand filtration, ozonation/GAC, and disinfection. The GAC filtration system (up to 250 km³ /day) is composed of 10 down-flow GAC contactors (empty bed contact time of 15.
In addition, non-”Methyl-” aerobic formate oxidizing bacterial genera, such as Pseudomonas, Moraxella, Paracoccus, and Mycobacterium, with NAD⁺ - dependence formate dehydrogenase [4, 16] were seldom observed from the BAC. The Mantel test was performed using the zt program [1] with 10,000 permutations, to determine effects of time and water temperature on the community. The normalized weighted UniFrac distance matrix between communities was calculated using the online UniFrac tool [13].

대상 데이터

The pyrosequencing libraries were deposited into the DNA Data Bank of Japan (DDBJ) Sequence Read Archive (http://trace.ddbj.nig.ac.jp/ dra) under the accession number DRA000829.

이론/모형

The Mantel test was performed using the zt program [1] with 10,000 permutations, to determine effects of time and water temperature on the community. The normalized weighted UniFrac distance matrix between communities was calculated using the online UniFrac tool [13]. A Mantel test was also performed to determine if there was a backwashing effect on the community in each time, for which pre- and postbackwashing samples were treated as 0 and 1, respectively, to produce the distance matrix.
Chicago, IL, USA). Linear relationships of abundances and time were determined using SigmaPlot version 10 (Systat).

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