Metatranscriptional characterization of metabolic dynamics in anaerobic membrane bioreactor producing methane from low-strength wastewater

Authors
Lee, MinjooYoo, KeunjeKim, HyeminSong, Kyung GuenKim, DajungTiedje, James M.Lee, Po-HengPark, Joonhong
Issue Date
2023-02
Publisher
Elsevier BV
Citation
Bioresource Technology, v.370
Abstract
An anaerobic membrane bioreactor (AnMBR) with media is an emerging carbon-neutral biotechnology for low -strength wastewater (LSWW) treatment and methane recovery. Understanding metabolic dynamics among metha-nogens and syntrophic bacteria is important in optimizing the design and operation of AnMBR. However, little is known about it, especially in media-attached microbial communities. This study explored metabolic dynamics to compare media-attached and suspended conditions. Accordingly, metagenomes and metatranscriptomes from AnMBRs with polymeric media and fed with different influent concentrations (350 and 700 mg-COD/L) were analyzed. Metabolic dynamics were profoundly influenced by the different growth habitats and influent conditions, although the applied influent concentrations are within the range of typical LSWW. Metabolic dynamics prediction results suggest that media-attached-growth habitats may have provided a more favorable microenvironment for methanogens to grow and produce methane, especially under low influent conditions. These findings provide sig-nificant implications for optimizing floating media design and operation of AnMBR-producing methane from LSWW.
Keywords
INTERSPECIES ELECTRON-TRANSFER; METHANOTHRIX-SOEHNGENII; FOULING CONTROL; PERFORMANCE; REDUCTION; ACETATE; Metagenomics; Media -attached -growth; Methanogens; Syntrophic bacteria; Metatranscriptomics
ISSN
0960-8524
URI
https://pubs.kist.re.kr/handle/201004/75811
DOI
10.1016/j.biortech.2022.128532
Appears in Collections:
KIST Article > 2023
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML

qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE