Araizi, P. K., Hills, C. D., Maries, A., Gunning, P. and Wray, D. S. ORCID: 0000-0002-0799-2730 (2013) The current status of commercialisation of carbonation technology. In: Fourth International Conference on Accelerated Carbonation for Environmental and Materials Engineering (ACEME 2013), 9-12 APR 2013, Leuven, Belgium.

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Abstract

Mineral carbonation technology (MCT) involves the safe long term storage of stable and
carbonated products, mainly carbonates and bicarbonates. The carbonation of candidate feedstock
comprising calcium and magnesium silicates is relatively slow, is energy intensive.
Processing involves the handling of significant quantities of materials. Thus, the challenges to
be overcome appear to be the high overall processing costs and slow reaction kinetics; both of
which will hinder commercial application of MCT. The combining of CO2 with various silicates is
estimated to cost between US$54 and US$250 per tonne of CO2. Further research on various
carbonation routes, via organic and inorganic substances, will result in lower energy
consumption and enhanced kinetics. In addition to naturally abundant silicates, an alternative
approach could be the waste carbonation technology (WCT) of alkaline residues. Previous
studies have shown that suitable wastes are abundant and may sequester up to 475kg of
CO2/tonne/waste at a lower cost than MCT. As the annual world production of 7 selected
alkaline residues is 4.79Gt, and the availability of silicate ores is huge, the future potential of
both MCT and WCT to be industrialised is promising, providing the key issues outlined by this
work can be overcome.

Item Type:	Conference or Conference Paper (Paper)
Additional Information:	[1] Copyright: © 2013 The Authors
Uncontrolled Keywords:	carbonation, calcium silicate, magnesium silicate, mineral carbonation
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) T Technology > TD Environmental technology. Sanitary engineering
Faculty / School / Research Centre / Research Group:	Faculty of Engineering & Science
Related URLs:	Organisation Organisation
Last Modified:	14 Oct 2016 09:33
URI:	http://gala.gre.ac.uk/id/eprint/13578

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