A Technical Review of Direct Air Capture using Inorganic Sorbents.
Rohan M. Borse
Second Year Bachelor of Technology, Department of Polymer and Surface Engineering, Institute of Chemical Technology, Mumbai, Maharashtra.
Dr. Aarti P. More
Assistant Professor, Department of Polymer and Surface Engineering, Institute of Chemical Technology, Mumbai, Maharashtra
DOI: https://doi.org/10.36664/bt/2022/v69i1/172535
Keywords: Direct Air Capture, CO2 capture, Climate change mitigation technology, inorganic sorbents, Technical Analysis.
Abstract
Spearheaded by the industrial revolution anthropogenic CO2 emission has been on the rise since the 18th century AD. This upsurge in the CO2 concentration has led to the increase in global temperatures and has elicited climate change whose complete repercussions are yet unknown. There is unanimity of the scientific community on the fact that the continuous rise of CO2 has to be subdued in order to curb the global increase of temperature. Reductions in the concentration of the carbon dioxide can be brought about by capture of CO2 emitted by large point sources and CO2 capture directly from the atmosphere. The capture of carbon dioxide is carried out by the help of sorbents that bind to the CO2 and then separating this CO2 by regenerating the sorbent which is again cycled through the same procedure. In this review we shall focus our attention on the inorganic sorbents utilized for direct capture of carbon dioxide from the ambient air. We shall do a comprehensive in-depth study and comparison of the efficacy of different sorbents, their industrial designs while taking a brief look at the limited array of technoeconomic analyses present on Direct Air Capture. However, it is important to note that development must be done to produce newer next generation materials to deploy DAC as a climate change mitigation technology on an industrial scale and to make a move towards achieving net zero emissions.
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