Review of Sustainable Methane Mitigation and Biopolymer Production

Biological methane (CH 4 ) mitigation combined with biopolymer (PHA-polyhydroxyalkaonate/PHB-polyhydroxybutyrate) production is a viable option in this fossil fuel-constrained era. Methantrophs are bacteria that can re-route CH 4 into PHA/PHB under nutrient-starved conditions. However, most studies...

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Bibliographic Details
Published in:Critical reviews in environmental science and technology 2015-08, Vol.45 (15), p.1579-1610
Main Authors: Karthikeyan, O. P., Chidambarampadmavathy, K., Cirés, Samuel, Heimann, Kirsten
Format: Article
Language:English
Subjects:
Bacteria
Biopolymers
bioreactors and techno-economics
Commercialization
Consortia
Culture
Fossils
Knowledge
Methane
methane mono-oxygenase (MMO)
methanotrophs
polyhydroxyalkanoates (PHA)/polyhydroxybutyrate (PHB)
Productivity
Reactor design
Sustainability
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Variables
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Summary:Biological methane (CH 4 ) mitigation combined with biopolymer (PHA-polyhydroxyalkaonate/PHB-polyhydroxybutyrate) production is a viable option in this fossil fuel-constrained era. Methantrophs are bacteria that can re-route CH 4 into PHA/PHB under nutrient-starved conditions. However, most studies (up to 90%) investigated pure cultures to demonstrate capacity for PHA/PHB accumulation, which on an industrial scale is unlikely to be serviceable. Furthermore, commercialization is handicapped as there are still a number of unresolved issues which affect productivities, such as optimized process variables, characterization of robust consortia, and optimized reactor design. This review will summarize existing knowledge and highlight research needs to fast track methanotrophic PHA/PHB production from CH 4 .
ISSN:1064-3389
1547-6537
DOI:10.1080/10643389.2014.966422