Calcium Carbonate Production through Direct Mineral Carbon Dioxide Sequestration

Calcium Carbonate Production through Direct Mineral Carbon Dioxide Sequestration

Type	Journal Article
Author	Amin Azdarpour
Author	Radzuan Junin
URL	http://www.scientific.net/AMM.699.1020
Volume	699
Pages	1020-1025
Publication	Applied Mechanics and Materials
Date	11/2014
Abstract	Mineral carbon dioxide sequestration provides a leakage free and permanent method of CO2 disposal to produce environmentally benign and stable solid carbonates. Researchers examined FGD gypsum as a source of calcium as the potential feedstock. Their objective was to investigate the effects of such reaction parameters as CO2 pressure, reaction temperature, particle size, and ammonia solution concentration on calcium carbonate purity through Merseburg process. Experimental results revealed reducing particle size to be effective in enhancing the calcium carbonate purity in which the smallest particles produced higher purity calcium carbonates rather than larger particles. The role of ammonia solution on calcium carbonate purity was found to be beneficial in improving the calcium carbonate purity in which increasing the ammonia solution increased calcium carbonate purity significantly in all experiments.