Research on modified calcium based adsorbents for in-situ CO2 capture through pyrolysis
Addressing the challenge of high in-situ adsorption temperature in solid waste pyrolysis,we developed a series of calcium-based solid adsorbents by incorporating various minerals into natural limestone.Experimental investigations on the single adsorption and cyclic adsorption of CO2 by these calcium-based solid adsorbents revealed that the adsorbent doped with 10％montmorillonite exhibited stable cyclic adsorption characteristics and a substantial adsorbent capacity,achieved a maximum CO2 adsorption ratio of 71.52％.Even after 10cycles,the adsorption capacity remained at 43.77％,concurrently elevated the heat value of pyrolysis gas to 14kJ/g.Consequently,the calcium-based adsorbents doped with 10％montmorillonite demonstrated effective CO2 capture and contribute to the enhanced calorific value of pyrolysis gas in solid waste co-pyrolysis.
pyrolysis gascarbon dioxidein-situ capturecalcium based adsorbentsmontmorillonite
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