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Title: Upstream considerations for gas fermentation processes

Journal Article · · Current Opinion in Biotechnology

Gas fermentation enables the production of fuels, chemicals, and foods from gaseous carbon sources and could serve as a technology for valorizing carbon that may otherwise be emitted to the atmosphere. In this review, we focus on upstream feedstock considerations: the supply of carbon and the supply of electrical power. Electrical power serves a dual role, providing both process energy and biochemical redox potential (via hydrogen or reduced intermediates). We define gas fermentation as bioprocesses involving gaseous feedstocks metabolized by microbes, distinct from microbial electrosynthesis. Trends in CO2 point sources and low-carbon electricity systems are analyzed, highlighting opportunities and challenges for future deployment. This review synthesizes current knowledge and identifies key R&D priorities for process integration at industrial scale.

Research Organization:
National Renewable Energy Laboratory (NREL), Golden, CO (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Office of Sustainable Transportation. Bioenergy Technologies Office (BETO); USDOE Office of Fossil Energy and Carbon Management (FECM), Office of Carbon Management
Grant/Contract Number:
AC36-08GO28308
OSTI ID:
2575623
Report Number(s):
NREL/JA--5100-93117
Journal Information:
Current Opinion in Biotechnology, Journal Name: Current Opinion in Biotechnology Vol. 95; ISSN 0958-1669
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

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