Hydrogen and carbon isotope fractionation by thermophilic hydrogenotrophic methanogens from a deep aquifer under coculture with fermenters
Hydrogen and carbon isotope fractionation by thermophilic hydrogenotrophic methanogens from a deep aquifer under coculture with fermenters
复制标题
DOI：
10.2343/geochemj.1.0161
复制
发表时间：
2012-06
影响因子：
0.8
通讯作者：
S. Hattori;Hiroaki Nashimoto;Hiroyuki Kimura;K. Koba;Keita Yamada;Mikio Shimizu;Hiroshi Watanabe;M. Yoh;N. Yoshida
中科院分区：
文献类型：
--
作者：
S. Hattori;Hiroaki Nashimoto;Hiroyuki Kimura;K. Koba;Keita Yamada;Mikio Shimizu;Hiroshi Watanabe;M. Yoh;N. Yoshida
版权所有© 2012日本地球化学会。使用分离的微生物的实验（例如，Balabane等人，1987; Botz等人，1996; Valentine等人，2004）和使用环境样品的孵育实验（例如，Sugimoto和Wada，1995年; Chidthaisong等人，2002; Fey等人，2004年）。氢和碳同位素分馏在CO2还原中的基本机制尚未完全理解。与碳同位素分馏相比，与CO2还原中氢同位素分馏相关的信息较少。氢同位素分馏是从纯培养物的CO2还原实验室培养研究中获得的（>300‰; Balabane等人，1987）大于在自然环境中观察到的那些，例如深海沉积物，其中CO2还原是CH 4产生的主要途径（约160‰; Whiticar等人，1986年）。培养实验从来没有表明氢同位素分馏系数相当于在自然环境中观察到的。深层含水层嗜热氢营养产甲烷菌与发酵罐共培养的氢碳同位素分馏
Copyright © 2012 by The Geochemical Society of Japan. experiments using isolated microbes (e.g., Balabane et al., 1987; Botz et al., 1996; Valentine et al., 2004) and incubation experiments using environmental samples (e.g., Sugimoto and Wada, 1995; Chidthaisong et al., 2002; Fey et al., 2004). The basic mechanisms of hydrogen and carbon isotope fractionations in CO2 reduction are not yet fully understood. Less information related to hydrogen isotope fractionation in CO2 reduction is available than for carbon isotope fractionation. Hydrogen isotope fractionation achieved from a laboratory incubation study of CO2 reduction with pure cultures (>300‰; Balabane et al., 1987) was greater than those observed in natural environments such as deep-sea sediments in which CO2 reduction is the dominant pathway in CH4 production (approximately 160‰; Whiticar et al., 1986). Incubation experiments have never indicated hydrogen isotope fractionation factors equivalent to those observed in natural environments. Hydrogen and carbon isotope fractionation by thermophilic hydrogenotrophic methanogens from a deep aquifer under coculture with fermenters