Carbon capture, storage and utilisation technologies: A critical analysis and comparison of their life cycle environmental impacts

作者：Rosa M. Cuéllar-Franca, Adisa Azapagic · 发表于：Journal of CO2 Utilization · 年份：2014 · DOI：10.1016/j.jcou.2014.12.001 · 被引用次数：1520 · 研究领域：Carbon Dioxide Capture Technologies、Global Energy and Sustainability Research、Process Optimization and Integration

• 27 life cycle assessment studies reviewed of which 11 focus on CCS and 16 on CCU. • CCS reduces the GWP by 63–82% but increases some other life cycle impacts. • The GWP of CCS is significantly lower than that of CCU. • However, other environmental impacts from CCS are higher compared to CCU. This paper presents a first comprehensive comparison of environmental impacts of carbon capture and storage (CCS) and carbon capture and utilisation (CCU) technologies. Life cycle assessment studies found in the literature have been reviewed for these purposes. In total, 27 studies have been found of which 11 focus on CCS and 16 on CCU. The CCS studies suggest that the global warming potential (GWP) from power plants can be reduced by 63–82%, with the greatest reductions achieved by oxy-fuel combustion in pulverised coal and integrated gasification combined cycle (IGCC) plants and the lowest by post-combustion capture in combined cycle gas turbine (CCGT) plants. However, other environmental impacts such as acidification and human toxicity are higher with than without CCS. For CCU, the GWP varies widely depending on the utilisation option. Mineral carbonation can reduce the GWP by 4–48% compared to no CCU. Utilising CO 2 for production of chemicals, specifically, dimethylcarbonate (DMC) reduces the GWP by 4.3 times and ozone layer depletion by 13 times compared to the conventional DMC process. Enhanced oil recovery has the GWP 2.3 times lower compared to discharging CO 2 to the atmospher...