Title: An evaluation of carbon-based adsorbents for post-combustion CO₂ capture

Authors: Ece Yapıcı; Hasret Akgün; Aysun Özkan; Zerrin Günkaya; Müfide Banar

Addresses: Department of Environmental Engineering, Eskişehir Technical University, Eskişehir, Turkey ' Department of Environmental Engineering, Eskişehir Technical University, Eskişehir, Turkey ' Department of Environmental Engineering, Eskişehir Technical University, Eskişehir, Turkey ' Department of Environmental Engineering, Eskişehir Technical University, Eskişehir, Turkey ' Department of Environmental Engineering, Eskişehir Technical University, Eskişehir, Turkey

Abstract: This study aims to select the most suitable carbon-based adsorbent to be used in post-combustion CO₂ capture by using multi-criteria decision-making (MCDM). Biochar, biomass-derived activated carbon, multi-walled carbon nanotube, and graphene adsorbent alternatives were evaluated based on five criteria. The criteria were weighted using the simple multi-attribute rating technique and criteria importance through inter-criteria methods. The analytic hierarchy process and the complex proportional assessment techniques were applied to the weighted criteria. As a result, biomass-derived activated carbon ranked first in all the applied methods. The novelty of the study is the prioritisation of carbon-based CO₂ adsorbents with the MCDM approach.

Keywords: analytic hierarchy process; AHP; carbon-based adsorbents; climate change; complex proportional assessment; COPRAS; post-combustion CO₂ capture; multi-criteria decision-making; MCDM.

DOI: 10.1504/IJGW.2023.129501

International Journal of Global Warming, 2023 Vol.29 No.3, pp.265 - 277

Received: 02 Nov 2021
Received in revised form: 05 Jun 2022
Accepted: 13 Jun 2022
Published online: 10 Mar 2023 *

Full-text access for editors Full-text access for subscribers Purchase this article Comment on this article