Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7067332 | Bioresource Technology | 2018 | 25 Pages |
Abstract
Ten mesophilic full-scale anaerobic digesters treating food wastewater (FW-digesters) or sewage sludge (SL-digesters) were monitored for 1â¯year to investigate: (1) microbial communities underpinning FW-digesters and SL-digesters, (2) the effects of total ammonia-nitrogen concentration [TAN] and Na+ concentration [Na+] on variations of these communities. [TAN] and [Na+] in the digester varied among digesters: 1.7-6.5â¯g TAN/L and 1.0-3.6â¯g Na+/L for the FW-digesters, and 0.1-2.2â¯g TAN/L and 0.1-1.2â¯g Na+/L for the SL-digesters; [TAN] negatively correlated with the process efficiency of the FW-digesters. Microbial communities were less diverse in the FW-digesters than in the SL-digesters. The FW- and SL-digesters formed very distinct microbial community structures; [TAN] and [Na+] in the digester were the critical factors shaping these structures. Immigrant bacteria from influent sludge significantly influence the bacterial communities of the SL-digesters. Methanoculleus might be tolerant to high ammonia in AD of such organic wastewater.
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Authors
Joonyeob Lee, Eunji Kim, Gyuseong Han, Jovale Vincent Tongco, Seung Gu Shin, Seokhwan Hwang,