Abstract
CO2 utilization into minerals is one of the most efficient methodologies although much research concerns the utilization of CO2 to produce chemicals. The production of precipitated calcium carbonate (PCC) from three different starting materials has been reported. The gas-liquid reaction is carried out by bubbling carbon dioxide into a solution of lime products with fixed parameters of 99% CO2 purity, 4.0 L/min of flow rate and 1500 rpm stirring rate at atmospheric pressure. The PCC was then characterized for X-Ray diffraction (XRD), field emission scanning electron microscopy (FESEM), X-Ray fluorescence (XRF) and particle size. Experimental results indicate that the PCC produced from quick lime showed the highest yield of 17.27 g, however there is no significant difference for both carbide lime and hydrated lime at 12.04 g and 11.57 g respectively. Morphology, phase structure and particle size of PCC produced reveals insignificant influence with different starting materials. Producing PCC from CO2 and natural minerals can be a potential method of reducing CO2 emissions by locking-up CO2 in a stable mineral form, whilst at the same time turning low quality natural minerals into high valuable products.
Highlights
Extensive use of fossil fuels, is a major challenge which contributed to the global climate change
Precipitated calcium carbonate (PCC) is a synthetic calcium carbonate that has high purity of CaCO3 content in its compound which is more than 98 wt%
This work investigates the effect of different starting material on the precipitated calcium carbonate (PCC) yield, morphology, purity and particle size using gasliquid-solid route at atmospheric pressure
Summary
Extensive use of fossil fuels, is a major challenge which contributed to the global climate change. There are lots of strategies for reducing CO2 emissions which include the following: (1) improving overall energy efficiency, (2) implementing carbon capture and storage and (3) utilizing renewable energy and material recycling [1] Another potentially important example of reducing CO2 emission via CCU field is CO2 mineralization, or mineral sequestration it can be considered a CCS path. Recent years, precipitated calcium carbonate (PCC) has received significant attention because of its wide application in the areas of papermaking, rubber, plastics, paints, pharmacy etc Such a variety of applications, only the right PCC can boost the quality of the end products. This work investigates the effect of different starting material on the PCC yield, morphology, purity and particle size using gasliquid-solid route at atmospheric pressure
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