Wastewater treatment using activated sludge represents one of the largest biotechnology industries in the world. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.Ĭompeting interests: The authors have declared that no competing interests exist. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are creditedĭata Availability: All relevant data are within the paper and its Supporting Information files.įunding: This research was partially supported by Innovation Fund Denmark (Grant No.: 09-067230)( )(PHN) and a Grant-in-Aid for JSPS Fellows from the Japan Society for the Promotion of Science (Grant No.: 12J00080)( )(TA). Received: JAccepted: AugPublished: September 4, 2015Ĭopyright: © 2015 McIlroy et al. PLoS ONE 10(9):Įditor: Nicole Webster, Australian Institute of Marine Science, AUSTRALIA were observed to be metabolically versatile, the A21b and Kaga01 phylotypes appeared to be highly specialized.Ĭitation: McIlroy SJ, Awata T, Nierychlo M, Albertsen M, Kindaichi T, Nielsen PH (2015) Characterization of the In Situ Ecophysiology of Novel Phylotypes in Nutrient Removal Activated Sludge Treatment Plants. These included Sulfuritalea and A21b, both within the class Betaproteobacteria, as well as Kaga01, within sub-group 10 of the phylum Acidobacteria. This study applied microautoradiography coupled with fluorescence in situ hybridization (MAR-FISH) for the in situ characterization of selected genus-level-phylotypes for which limited physiological information is available. ![]() While the basic activities of some of these genera in situ are known, there is little to no information for the majority. These organisms are likely responsible for the bulk of nutrient transformations underpinning the functions of these plants. ![]() Recent 16S rRNA gene amplicon surveys of activated sludge wastewater treatment plants with nutrient removal indicate the presence of a core set of bacterial genera. An in depth understanding of the ecology of activated sludge nutrient removal wastewater treatment systems requires detailed knowledge of the community composition and metabolic activities of individual members.
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