The emissions of CO2 and industrial solid waste are increasing year by year,posing a threat to human survival and development.Countries around the world are urgently seeking solutions to reduce carbon emissions.Researchers have developed a series of CO2 minerali-zation processes by reacting calcium and magnesium elements with CO2 to generate stable carbonates,achieving permanent CO2 storage.In order to achieve large-scale CO2 storage,high-value utilization of calcium containing solid waste,and reduce mineralization costs,inex-pensive and easily available calcium containing industrial solid waste was selected as mineralization raw materials.Started from the prepa-ration of polycrystalline micro nano calcium carbonate,the latest research progress on the leaching of calcium containing industrial solid waste and CO2 interstitial mineralization was summarized.The commonly used leaching agents for indirect mineralization of calcium contai-ning industrial solid waste were introduced,and the impact of reaction conditions and crystal form control agents on the crystal form and morphology of micro nano calcium carbonate during indirect mineralization preparation was analyzed.The control principle was under-stood and explained.Finally,the current technical difficulties and future research focus of indirect mineralization technology were summarized and discussed.The results indicate that adjusting the mineralization reaction conditions such as temperature,pH,stirring rate,and CO2 aeration rate,or adding crystal form control agents,can effectively control the crystal form,morphology,and size of calcium carbonate.The indirect min-eralization of CO2 from industrial solid waste containing calcium to prepare micro nano calcium carbonate can meet the requirements of different fields for the use of calcium carbonate,and can generate economic and environmental benefits,with broad development prospects.
CO2 mineralizationindustrial solid wastecrystal form regulationmorphological regulationcalcium carbonate
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