Quantifying the percentage of methane formation via acetoclastic and syntrophic acetate oxidation pathways in anaerobic digesters

Jiang, Ying; Banks, Charles; Zhang, Yue; Heaven, Sonia; Longhurst, Philip J.

CERES Home
→
School of Water, Energy and Environment (SWEE)
→
Staff publications (SWEE)
→
View Item

dc.contributor.author	Jiang, Ying
dc.contributor.author	Banks, Charles
dc.contributor.author	Zhang, Yue
dc.contributor.author	Heaven, Sonia
dc.contributor.author	Longhurst, Philip J.
dc.date.accessioned	2017-04-11T08:53:05Z
dc.date.available	2017-04-11T08:53:05Z
dc.date.issued	2017-04-07
dc.identifier.citation	Jiang Y, Banks CJ, Zhang Y, et al., (2018) Quantifying the percentage of methane formation via acetoclastic and syntrophic acetate oxidation pathways in anaerobic digesters, Waste Management, Volume 71, January 2018, pp. 749-756	en_UK
dc.identifier.issn	0956-053X
dc.identifier.uri	http://doi.org/10.1016/j.wasman.2017.04.005
dc.identifier.uri	http://dspace.lib.cranfield.ac.uk/handle/1826/11760
dc.description.abstract	Ammonia concentration is one of the key factors influencing the methanogenic community composition and dominant methanogenic pathway in anaerobic digesters. This study adopted a radiolabelling technique using [2-14C] acetate to investigate the relationship between total ammonia nitrogen (TAN) and the methanogenic pathway. The radiolabelling experiments determined the ratio of 14CO2 and 14CH4 in the biogas which was used to quantitatively determine the percentage of CH4 derived from acetoclastic and syntrophic acetate oxidation routes, respectively. This technique was performed on a selection of mesophilic digesters representing samples of low to high TAN concentrations (0.2–11.1 g kg−1 wet weight). In high TAN digesters, the ratio between 14CO2 and 14CH4 was in the range 2.1–3.0; indicating 68–75% of methane was produced via the hydrogenotrophic route; whereas in low ammonia samples the ratio was 0.1–0.3, indicating 9–23% of methane was produced by the hydrogenotrophic route. These findings have been confirmed further by phylogenetic studies.	en_UK
dc.language.iso	en	en_UK
dc.publisher	Elsevier	en_UK
dc.rights	Attribution 4.0 International (CC BY 4.0) You are free to: Share — copy and redistribute the material in any medium or format, Adapt — remix, transform, and build upon the material for any purpose, even commercially. The licensor cannot revoke these freedoms as long as you follow the license terms. Under the following terms: Attribution — You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. Information: No additional restrictions — You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.
dc.subject	Food waste	en_UK
dc.subject	Anaerobic digestion	en_UK
dc.subject	Methanogenic pathway	en_UK
dc.subject	Radioactive isotope labelling	en_UK
dc.subject	Ammonia inhibition	en_UK
dc.title	Quantifying the percentage of methane formation via acetoclastic and syntrophic acetate oxidation pathways in anaerobic digesters	en_UK
dc.type	Article	en_UK
dc.identifier.cris	17220881