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Accelerated weathering of limestone for CO2 mitigation: Opportunities for the stone and cement industries

Mining Engineering

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Abstract

Large amounts of limestone fines co-produced during the processing of crushed limestone may be useful in the sequestration of carbon dioxide (CO2). Accelerated weathering of limestone (AWL) is proposed as a low-tech method to capture and sequester CO2 from fossil fuel-fired power plants and other point sources such as cement manufacturing. AWL reactants are readily available, inexpensive and environmentally benign. Waste CO2 is hydrated with water to produce carbonic acid. This reacts with and is neutralized by limestone fines, thus converting CO2 gas to dissolved calcium bicarbonate.

Additional publication details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Accelerated weathering of limestone for CO2 mitigation: Opportunities for the stone and cement industries
Series title:
Mining Engineering
Volume:
61
Issue:
2
Year Published:
2009
Language:
English
Publisher:
Society for Mining, Metallurgy and Exploration
Contributing office(s):
Geology, Geophysics, and Geochemistry Science Center
Description:
6 p.
First page:
27
Last page:
32