文献类型：期刊文献

英文题名：Formate-Dependent Microbial Conversion of CO2 and the Dominant Pathways of Methanogenesis in Production Water of High-temperature Oil Reservoirs Amended with Bicarbonate

作者：Yang, Guang-Chao[1,2];Zhou, Lei[1,2];Mbadinga, Serge M.[1,2,3];Liu, Jin-Feng[1,2];Yang, Shi-Zhong[1,2];Gu, Ji-Dong[4];Mu, Bo-Zhong[1,2,3]

机构：[1]E China Univ Sci & Technol, State Key Lab Bioreactor Engn, Shanghai 200237, Peoples R China;[2]E China Univ Sci & Technol, Inst Appl Chem, Shanghai 200237, Peoples R China;[3]Shanghai Collaborat Innovat Ctr Biomfg Technol, Shanghai, Peoples R China;[4]Univ Hong Kong, Sch Biol Sci, Hong Kong, Hong Kong, Peoples R China

年份：2016

卷号：7

外文期刊名：FRONTIERS IN MICROBIOLOGY

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000372496900002)】；

基金：This work was supported by the National Natural Science Foundation of China (Grant No. 41530318, 41273084, 41403066), the NSFC/RGC Joint Research Fund (Grant No. 41161160560) and the Fundamental Research Funds for the Central Universities of China (Grant No. WK1414029).

语种：英文

外文关键词：bicarbonate; oil reservoirs; stable isotope technique; CDCS; methanogenesis; CO2 conversion

摘要：CO2 sequestration in deep-subsurface formations including oil reservoirs is a potential measure to reduce the CO2 concentration in the atmosphere. However, the fate of the CO2 and the ecological influences in carbon dioxide capture and storage (CDCS) facilities is not understood clearly. In the current study, the fate of CO2 (in bicarbonate form; 0 similar to 90 mM) with 10 mM of formate as electron donor and carbon source was investigated with high-temperature production water from oilfield in China. The isotope data showed that bicarbonate could be reduced to methane by methanogens and major pathway of methanogenesis could be syntrophic formate oxidation coupled with CO2 reduction and formate methanogenesis under the anaerobic conditions. The bicarbonate addition induced the shift of microbial community. Addition of bicarbonate and formate was associated with a decrease of Methanosarcinales, but promotion of Methanobacteriales in all treatments. Thermodesulfovibrio was the major group in all the samples and Thermacetogenium dominated in the high bicarbonate treatments. The results indicated that CO2 from CDCS could be transformed to methane and the possibility of microbial CO2 conversion for enhanced microbial energy recovery in oil reservoirs.