Hydrogen and carbon isotope systematics in hydrogenotrophic ...

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Abstract. Hydrogen and carbon isotope systematics of H2O–H2–CO2–CH4 in hydrogenotrophic methanogenesis and their relation to H2 availability were ...
Okumura et al. Progress in Earth and Planetary Science (2016) 3:14 DOI 10.1186/s40645-016-0088-3

Progress in Earth and Planetary Science

RESEARCH ARTICLE

Open Access

Hydrogen and carbon isotope systematics in hydrogenotrophic methanogenesis under H2-limited and H2-enriched conditions: implications for the origin of methane and its isotopic diagnosis Tomoyo Okumura1,2, Shinsuke Kawagucci1,2,3*, Yayoi Saito2,4, Yohei Matsui2,3, Ken Takai1,2,3 and Hiroyuki Imachi2,3

Abstract Hydrogen and carbon isotope systematics of H2O–H2–CO2–CH4 in hydrogenotrophic methanogenesis and their relation to H2 availability were investigated. Two H2-syntrophic cocultures of fermentatively hydrogenogenic bacteria and hydrogenotrophic methanogens under conditions of