Atmospheric Removal of Methane by enhancing the natural hydroxyl radical sink


According to the latest report from the Intergovernmental Panel on Climate Change (IPCC), currently, global warming due to methane (CH4) alone is about 0.5°C while due to carbon dioxide (CO2) alone is about 0.75°C. As CH4 emissions will continue growing, in order to limit warming to 1.5˚C, some of the most effective strategies are rapidly reducing CH4 emissions and developing large scale CH4 removal methods. The aim of this review article is to summarise and propose possible methods for atmospheric CH4 removal, based on the hydroxyl radical (°OH), which is the principal natural sink of many gases in the atmosphere and on many water surfaces. Inspired by mechanisms of °OH generation in the atmosphere and observed or predicted enhancement of °OH by climate change and human activities, we proposed several methods to enhance the °OH sink by some physical means using water vapour and artificial UV radiation.

Publication DOI:
Divisions: College of Engineering & Physical Sciences > School of Infrastructure and Sustainable Engineering > Chemical Engineering & Applied Chemistry
College of Engineering & Physical Sciences
College of Engineering & Physical Sciences > Aston Institute of Materials Research (AIMR)
Additional Information: Copyright © 2022, The Authors. Greenhouse Gases: Science and Technology published by Society of Chemical Industry and John Wiley & Sons Ltd. This is an open access article under the terms of the Creative Commons Attribution License [], which permits use, distribution and reproduction in any medium, provided the original work is properly cited. Funding Information: This research was supported by the European Commission H2020 Marie S Curie Research and Innovation Staff Exchange (RISE) award (Grant No. 871998), and the National Key Research and Development Plan (Key Special Project of Inter‐governmental National Scientific and Technological Innovation Cooperation, Grant No. 2019YFE0197500).
Uncontrolled Keywords: Environmental Chemistry,Environmental Engineering
Publication ISSN: 2152-3878
Full Text Link:
Related URLs: https://onlinel ... 0.1002/ghg.2191 (Publisher URL)
http://www.scop ... tnerID=8YFLogxK (Scopus URL)
PURE Output Type: Review article
Published Date: 2022-12
Published Online Date: 2022-11-07
Accepted Date: 2022-11-01
Authors: Wang, Yuyin
Ming, Tingzhen
Li, Wei
Yuan, Qingchun (ORCID Profile 0000-0001-5982-3819)
de Richter, Renaud
Davies, Philip
Caillol, Sylvain



Version: Published Version

License: Creative Commons Attribution

| Preview

Export / Share Citation


Additional statistics for this record