期刊
CRITICAL REVIEWS IN ENVIRONMENTAL SCIENCE AND TECHNOLOGY
卷 47, 期 17, 页码 1555-1580出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/10643389.2017.1372001
关键词
Anaerobic digestion; bioconversion; carbondioxide; greenhouse gas; valorization
资金
- WRAP (as part of the driving innovation in anaerobic digestion (DIAD) programme)
- Engineering and Physical Sciences Research Council (EPSRC)
- Severn Trent Water
- Engineering and Physical Sciences Research Council [1109543] Funding Source: researchfish
Energy consumption of the water sector presents an increasing energy demand, contrary to GHG mitigation aims. As a result, research aimed at capturing emitted CO2 and at developing treatment technologies with a low energy demand and increased renewable energy production has increased, leading to a surge in implementation of anaerobic digestion (AD). Valorization of the biogenic CO2 emitted with biogas AD (estimated at over 1 MtCO(2) per annum for the UK water and organic waste sectors), presents an opportunity to further reduce carbon footprint and support energy supply decarburization. This paper reviews bioconversion of CO2 into CH4 in ADs (without addition of H-2) as a means to valorize CO2 emissions. The review has concluded this to be a promising solution to reduce carbon footprint and uplift renewable energy production. However, in order to increase readiness for implementation (1) the mechanisms of CO2 utilization need to be elucidated, including the sources of additional H-2 needed, (2) studies need to report more thoroughly the conditions of CO2 injection and (3) trials where ADs are integrated with gas to liquid mass transfer technologies need to be performed.
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