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Integration of CO2 capture and storage based on pH-swing mineral carbonation using recyclable ammonium salts

descriptionPublicationkeyboard_double_arrow_right Article , Journal 01 Jan 2011Publisher:Elsevier BVJournal:Energy Procedia, volume 4, pages 4,930-4,936 (issn: 1876-6102,

Authors: M. Mercedes Maroto-Valer; Xiaolong Wang;

doi: 10.1016/j.egypro.2011.02.462

Integration of CO2 capture and storage based on pH-swing mineral carbonation using recyclable ammonium salts

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Abstract

AbstractThe integration of CO2 capture and storage process based on mineral carbonation using recyclable ammonium salts is a new approach to capture carbon dioxide and convert it into mineral carbonates. This process avoids stripping CO2 as pure gas from absorbents and compression of CO2, and therefore reduces energy consumption. The additives used in this process are recyclable ammonium salts, the NH4HSO4 and NH4HCO3. The results from extraction experiments show that NH4HSO4 was able to extract 100% of magnesium from serpentine at 100 °C after 3 hours. And the precipitation of C hydromagnesite using NH4HCO3 solution is much more effective than using CO2, where the highest magnesium carbonation achieved 96%. Based on the experimental results, this process shows that the process has the potential to be cost-effective.

Related Organizations

Nottingham Trent University
United Kingdom

Keywords

Integrated capture and storage, Ammonium salts, Serpentine, Mineral carbonation, Recycable, Energy(all)

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