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A green approach towards sorption of CO 2 on waste derived biochar.

Authors :: Kumar A
Singh E
Mishra R
Lo SL
Kumar S
Source :: Environmental research [Environ Res] 2022 Nov; Vol. 214 (Pt 2), pp. 113954. Date of Electronic Publication: 2022 Jul 30.
Publication Year :: 2022
Abstract: Carbon capture technologies have advanced in recent years to meet the ever-increasing quest to minimize excessive anthropogenic CO <subscript>2</subscript> emissions. The most promising option for CO <subscript>2</subscript> control has been identified as carbon capture and storage. Among the numerous sorbents, char generated from biomass thermal conversion has shown to be an efficient CO <subscript>2</subscript> adsorbent. This study examines various characteristics that can be used to increase the yield of biochar suited for carbon sequestration. This review gives recent research progress in the area, stressing the variations and consequences of various preparation processes on textural features such as surface area, pore size and sorption performance with respect to CO <subscript>2</subscript> 's sorption capacity. The adjoining gaps discovered in this field have also been highlighted herewith, which will serve as future work possibility. It aims to analyse and describe the possibilities and potential of employing pristine and modified biochar as a medium of CO <subscript>2</subscript> capture. It also examines the parameters that influence biochar's CO <subscript>2</subscript> adsorption ability and pertinent challenges regarding the production of biochar-based CO <subscript>2</subscript> sorbent materials.<br /> (Copyright © 2022 Elsevier Inc. All rights reserved.)