JOURNAL: Quantifying CO₂ removal at enhanced weathering sites: A multiproxy approach
Summary
Authors:
William J. Knapp
Emily I. Stevenson
Phil Renforth
Philippa L. Ascough
Alasdair. C. G. Knight
Luke Bridgestock
Michael J. Bickle
Yongjie Lin
Alex L. Riley
William M. Mayes
Edward T. Tipper
University of Cambridge
Heriot-Watt University
Scottish Universities Environmental Research Centre
University of St. Andrews
Chinese Academy of Geological Sciences
University of Hull
Quantifying CO2 removal at enhanced weathering sites: A multiproxy approach
Environmental Science & Technology
June 2023
This paper explores enhanced weathering, a method for large scale atmospheric CO2 removal. A key challenge is monitoring and verifying how much CO2 is captured through this process. The study examines a site in Consett, Co. Durham, UK, where steel industry waste has been naturally weathering for over 40 years. By analysing water, soil, and mineral deposits, the researchers developed a new technique to track carbon removal. Their findings show that most of the captured carbon comes from the atmosphere, offering a reliable way to monitor and verify CO2 removal in enhanced weathering projects.