Title

CO2 mineralization using basic oxygen furnace slag: process optimization by response surface methodology

Document Type

Journal Article

Publisher

Springer

Place of Publication

Germany

School

School of Engineering

RAS ID

22324

Comments

Originally published as: Sun, Y., Yang, G., Li, K., Zhang, L.C., & Zhang, L. (2016). CO2 mineralization using basic oxygen furnace slag: process optimization by response surface methodology. Environmental Earth Sciences, 75(19), Article number 1335. Available here.

Abstract

The basic oxygen furnace steelmaking slag (SL) is employed for CO2 mineralization. Response surface methodology and the central composite design were employed in determining the optimal condition. The optimization goal in this paper has been set for maximum CO2 capturing. It was found that the reaction temperature and CO2 pressure and their combination were significant. A quadratic model was developed for process optimization and statistical experimental designs. The CO2 capture capacity could reach 126 g CO2/kg SL at optimal condition. The increased reaction temperature will lead to an obvious decrease of CaCO3 and increase of MgCO3. If deployed, this optimized indirect CO2 mineral sequestration process could permanently capture 252,000 tons of CO2 per annum based upon current 2 million tons of SL productivity per annum. © 2016, Springer-Verlag Berlin Heidelberg.

DOI

10.1007/s12665-016-6147-7

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