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Biogas production through syntrophic acetate oxidation and deliberate operating strategies for improved digester performance

Westerholm, Maria and Moestedt, Jan and Schnürer, Anna (2016). Biogas production through syntrophic acetate oxidation and deliberate operating strategies for improved digester performance. Applied energy : an international journal. 179, 124-135
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Official URL: http://dx.doi.org/10.1016/j.apenergy.2016.06.061

Abstract

Anaerobic degradation of protein-rich materials has high methane potential and produces nutrient-rich residue, but requires strategies to avoid ammonia inhibition. A well-adapted process can cope with substantially higher ammonia levels than an unadapted process and analyses of pathways for methanisation of acetate, combined with determination of microbial community structure, strongly indicate that this is due to a significant contribution of syntrophic acetate oxidation. The microorganisms involved in syntrophic acetate oxidation thus most likely occupy a unique niche and play an important role in methane formation. This review summarises current insight of syntrophic acetate oxidising microorganisms, their presence and the detection of novel species and relate these observations with operating conditions of the biogas processes in order to explore contributing factors for development of an ammonia-tolerant microbial community that efficiently degrades acetate through the syntrophic pathway. Besides high ammonia level, acetate concentration, temperature and methanogenic community structure are considered in this review as likely factors that shape and influence SAO-mediated microbial ecosystems. The main purpose of this review is to facilitate process optimisation through considering the activity and growth of this key microbial community.

Authors/Creators:Westerholm, Maria and Moestedt, Jan and Schnürer, Anna
Title:Biogas production through syntrophic acetate oxidation and deliberate operating strategies for improved digester performance
Series/Journal:Applied energy : an international journal (0306-2619)
Year of publishing :2016
Volume:179
Page range:124-135
Number of Pages:12
Publisher:Elsevier
ISSN:0306-2619
Language:English
Publication Type:Journal article
Refereed:Yes
Article category:Scientific peer reviewed
Version:Published version
Full Text Status:Public
Agris subject categories.:P Natural resources > P06 Renewable energy resources
Subjects:(A) Swedish standard research categories 2011 > 2 Engineering and Technology > 209 Industrial Biotechnology > Bioenergy
(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Microbiology (Microbiology in the medical area to be 30109)
(A) Swedish standard research categories 2011 > 2 Engineering and Technology > 208 Environmental Biotechnology > Other Envionmental Biotechnology
Keywords:Syntrophic acetate oxidising bacteria, Methanogens, Ammonia inhibition, Operational parameters, Trace metals, Temperature
URN:NBN:urn:nbn:se:slu:epsilon-e-4132
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-e-4132
Additional ID:
Type of IDID
Web of Science (WoS)000383291800011
ID Code:14276
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Dept. of Microbiology (until 161231)
Deposited By: SLUpub Connector
Deposited On:27 Apr 2017 08:22
Metadata Last Modified:25 Jun 2017 14:36

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