GEG Group
CPG
TANGO
ETH Zurich

Recent advances in carbon capture storage and utilisation technologies: a review

2021Journal ArticleEnvironmental Chemistry Letters 19, pp. 797849

Abstract

Human activities have led to a massive increase in CO2 emissions as a primary greenhouse gas that is contributing to climate change with >1°C global warming than that of the pre-industrial level. The three main technologies that are utilised in carbon capture; pre-combustion, post-combustion and oxy-fuel combustion, have been evaluated. We critically reviewed the advances in carbon capture, storage and utilisation in the recent literature. In this review, the affirmed carbon uptake technologies with techniques of carbon dioxide separation, as well as listing all the disadvantages and advantages of each technology, have been addressed. Monoethanolamine is the most common carbon sorbent; however, it requires high regeneration energy of 3.5 GJ per tonne of CO2, while recent advances in the sorbent technology showed novel solvent (Modulated Amine Blend) with lower regeneration energy of 2.17 GJ per tonne of CO2. Graphene type materials showed CO2 adsorption capacity of 0.07 mol/g, which is 10 times higher than that of specific types of activated carbon, zeolites and metal-organic frameworks. CO2 geosequestration provides an efficient and long-term strategy for storing the captured CO2 in geological formations with a global storage capacity factor at a Gt-scale within operational timescales. Regarding the utilisation route, currently, the gross global utilisation of CO2 is 32,000 million tonnes/year). Herein, we reviewed different CO2 utilisation methods such as direct routes (i.e. beverage carbonation, food packaging and oil/gas recovery), material/chemical industries (i.e. acrylates, carbamates, carbonates, polyurethanes, polycarbonates, formaldehyde and urea) and fuels (i.e. biofuels, dimethyl ether, tertiary butyl methyl ether and methanol). Moreover, we investigated additional CO2 utilisation for base-load power generation, seasonal energy storage, and district cooling and/or cryogenic direct air CO2 capture using geothermal energy. Through bibliometric mapping, we identified the research gap in the literature within this field which requires future investigations, for instance, designing new and stable ionic liquids, pore size and selectivity of metal-organic frameworks and enhancing the adsorption capacity of novel solvents. Moreover, areas such as techno-economic evaluation of novel solvents, process design and dynamic simulation require further effort as well as research and development before pilot and commercial-scale trials.