Acetotrophic Activity Facilitates Methanogenesis from LCFA at Low Temperatures: Screening from Mesophilic Inocula
Joint Authors
Singh, Suniti
Rinta-Kanto, Johanna M.
Kettunen, Riitta
Lens, Piet
Collins, Gavin
Kokko, Marika
Rintala, Jukka
Source
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-16, 16 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-05-02
Country of Publication
Egypt
No. of Pages
16
Main Subjects
Abstract EN
The inoculum source plays a crucial role in the anaerobic treatment of wastewaters.
Lipids are present in various wastewaters and have a high methanogenic potential, but their hydrolysis results in the production of long chain fatty acids (LCFAs) that are inhibitory to anaerobic microorganisms.
Screening of inoculum for the anaerobic treatment of LCFA-containing wastewaters has been performed at mesophilic and thermophilic conditions.
However, an evaluation of inocula for producing methane from LCFA-containing wastewater has not yet been conducted at low temperatures and needs to be undertaken.
In this study, three inocula (one granular sludge and two municipal digester sludges) were assessed for methane production from LCFA-containing synthetic dairy wastewater (SDW) at low temperatures (10 and 20°C).
A methane yield (based on mL-CH4/g-CODadded) of 86-65% with acetate and 45-20% with SDW was achieved within 10 days using unacclimated granular sludge, whereas the municipal digester sludges produced methane only at 20°C but not at 10°C even after 200 days of incubation.
The acetotrophic activity in the inoculum was found to be crucial for methane production from LCFA at low temperatures, highlighting the role of Methanosaeta (acetoclastic archaea) at low temperatures.
The presence of bacterial taxa from the family Syntrophaceae (Syntrophus and uncultured taxa) in the inoculum was found to be important for methane production from SDW at 10°C.
This study suggests the evaluation of acetotrophic activity and the initial microbial community characteristics by high-throughput amplicon sequencing for selecting the inoculum for producing methane at low temperatures (up to 10°C) from lipid-containing wastewaters.
American Psychological Association (APA)
Singh, Suniti& Rinta-Kanto, Johanna M.& Kettunen, Riitta& Lens, Piet& Collins, Gavin& Kokko, Marika…[et al.]. 2019. Acetotrophic Activity Facilitates Methanogenesis from LCFA at Low Temperatures: Screening from Mesophilic Inocula. Archaea،Vol. 2019, no. 2019, pp.1-16.
https://search.emarefa.net/detail/BIM-1122239
Modern Language Association (MLA)
Singh, Suniti…[et al.]. Acetotrophic Activity Facilitates Methanogenesis from LCFA at Low Temperatures: Screening from Mesophilic Inocula. Archaea No. 2019 (2019), pp.1-16.
https://search.emarefa.net/detail/BIM-1122239
American Medical Association (AMA)
Singh, Suniti& Rinta-Kanto, Johanna M.& Kettunen, Riitta& Lens, Piet& Collins, Gavin& Kokko, Marika…[et al.]. Acetotrophic Activity Facilitates Methanogenesis from LCFA at Low Temperatures: Screening from Mesophilic Inocula. Archaea. 2019. Vol. 2019, no. 2019, pp.1-16.
https://search.emarefa.net/detail/BIM-1122239
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1122239