Journal
CRITICAL REVIEWS IN ENVIRONMENTAL SCIENCE AND TECHNOLOGY
Volume 45, Issue 15, Pages 1579-1610Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/10643389.2014.966422
Keywords
polyhydroxyalkanoates (PHA)/polyhydroxybutyrate (PHB); methane mono-oxygenase (MMO); methane; bioreactors and techno-economics; methanotrophs
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Funding
- Advanced Manufacturing Cooperative Research Centre (AMCRC) through the Australian Government's Cooperative Research Centre Scheme [2.3.4]
- AMCRC PhD fellowship at James Cook University
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Biological methane (CH4) 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 CH4 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 CH4.
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