Abstract
Capturing CO2 from industrial processes may be one of the main ways to control global temperature increases. One of the proposed methods is the calcium looping technology (CaL). The aim of this research was to assess the sequestration capacity of selected carbonate rocks, serpentinite, and basalt using a TGA-DSC analysis, thus simulating the CaL process. The highest degrees of conversion were obtained for limestones, lower degrees were obtained for magnesite and serpentinite, and the lowest were obtained for basalt. The decrease in the conversion rate, along with the subsequent CaL cycles, was most intense for the sorbents with the highest values. Thermally pretreated limestone samples demonstrated different degrees of conversion, which were the highest for the calcium-carbonate-rich limestones. The cumulative carbonation of the pretreated samples was more than twice as low as that of the raw ones. The thermal pretreatment was effective for the examined rocks.
Highlights
The prevailing view today is that anthropogenic and geogenic greenhouse gases (GHGs) emitted into the atmosphere are the main cause of global warming
CO2 is considered to be the greenhouse gas with the greatest contribution to global warming, and global CO2 emissions are used as a clear indicator of global fossil energy consumption (e.g., [2])
The highest values were achieved for carbonate rocks, intermediate values were achieved for marl and bituminous limestone, lower ones were achieved for the remaining sorbents, and the lowest were achieved for basalt
Summary
The prevailing view today is that anthropogenic and geogenic greenhouse gases (GHGs) emitted into the atmosphere are the main cause of global warming. It takes place in pores of small reaction in which sulfur compounds are involved is largely similar to carbonation; dimensions, and its products are deposited on the sorbent surface, which, in turn, makes it is irreversible under CaL conditions It takes place in pores of small dimensions, and its carbonation difficult. The aim of this work was to assess the sequestration capacity of selected method is suitable for smallTGA-DSC samples (e.g., drill cuttings, rock fragments), which are easy a simultaneous analysis, simulating the calcium looping process. Such a to obtain even at a very early stage of the raw material deposit recognition.
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