Drastic enhancement of CO2 adsorption capacity by negatively charged sub-bituminous coal

Authors

Hussein R. Abid, Edith Cowan UniversityFollow
Stefan Iglauer, Edith Cowan UniversityFollow
Ahmed Al-Yaseri, Edith Cowan UniversityFollow
Alireza Keshavarz, Edith Cowan UniversityFollow

Author Identifier

Stefan Iglauer

https://orcid.org/0000-0002-8080-1590

Alireza Keshavarz

https://orcid.org/0000-0002-8091-961X

Document Type

Journal Article

Publication Title

Energy

Volume

233

Publisher

Elsevier

School

School of Engineering

RAS ID

38882

Funders

Edith Cowan University - Open Access Support Scheme 2021

Edith Cowan University

Comments

Abid, H. R., Iglauer, S., Al-Yaseri, A., & Keshavarz, A. (2021). Drastic enhancement of CO2 adsorption capacity by negatively charged sub-bituminous coal. Energy, 233, Article 120924.

https://doi.org/10.1016/j.energy.2021.120924

Abstract

Climate change is a key problem of the 21st century. Climate change is mainly caused by anthropogenic CO₂ emissions, and one solution to this problem is to capture and store CO₂ in deep coal seams, where it is immobilized by adsorption to the coal surface. Here we propose to modify the coal with methyl orange (MO), a typical dye that is also a major pollutant of the hydrosphere and removed thereby. Thus, raw and MO-modified coals were characterized to investigate their thermal stabilities, textural properties, carbon contents, surface characteristics, and CO₂ adsorption on the coal samples was measured at typical storage conditions (323 K and pressures up to 37.5 bar). CO₂ adsorption dramatically increased in the MO-coal, from 1.95 mol. kg−1 (raw coal) to 18.7 mol. kg −1. This work thus aids in the development of improved methods for CO₂ storage, to significantly mitigate climate change.

DOI

10.1016/j.energy.2021.120924

Creative Commons License

This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.