Review on recent advances in CO2 utilization and sequestration technologies in cement-based materials

Abstract

The cement industry is a major industrial producer of greenhouse gases, responsible for 5-8% of man-made CO2 emissions. The carbonation reaction, which occurs between CO2 and the corresponding reactive compounds from cement-based materials, can fix CO2 in the form of thermodynamically stable carbonates. Thus, the CO2 uptake technology using cement-based materials could be considered as an effective option for Carbon Capture, Utilization and Sequestration projects. This paper presents a review on state of the art studies in this emerging technology and provides information from a scientific and technical perspective on CO2 utilization and sequestration technologies using cement-based materials. The CO2 uptake mechanisms of cement-based materials are summarized and factors affecting the kinetic of the carbonation reaction are identified. Furthermore, this paper consolidates available information on CO2 uptake capacity and efficiency, industrial challenges, critical issue and the need for further investigation regarding the technologies. Lastly, the environmental impact and economic feasibility of using cement-based materials in the CO2 utilization and sequestration technology sector were analyzed and compared with geologic sequestration and mineral carbonation technologies. (C) 2016 Elsevier Ltd. All rights reserved.