Advances in key technologies of synergistic pollution and carbon reduction by industrial solid waste CO2 mineralization
LI Lei
PAN Xin
LIU Luyu
Abstract：In view of the problem of CO2 and solid waste emissions in industrial processes,it is urgent to reduce pollution and carbon.CO2 mineralization technology has attracted more and more attention because it can be used as resources while storing CO2.The utilization of different industrial solid waste as raw materials for CO2 mineralization was discussed,the advantages and disadvantages of different miner-alization processes and the mechanism of CO2 mineralization were compared and analyzed,and research status and industrial application of different CO2 mineralization processes were summarized.It is found that at present,there is no mechanical explanation for solid waste CO2 mineralization,and it is impossible to effectively control the leaching process of metal ions and the efficiency of gas-liquid-solid mass transfer in the mineralization process.At the same time,carbonate products formed by mineralization have some problems,such as large particle size,easy agglomeration and single function.The mechanism of controlling leaching rate and degree,such as surface solvent diffu-sion,should be further investigated in future research.The dynamic mechanism of nucleation and crystallization of carbonate and the con-trol methods of morphology and particle size of carbonate crystals should be studied.It is important to establish the gas-liquid-solid trans-port model of coal-based solid waste leaching and mineralized solute,optimize the process parameters,carry out process strengthening,and determine the scale-up law.The whole life cycle and economic evaluation of CO2 mineralization utilization technology should be fur-ther strengthened to make it more energy saving and cost saving.Finally,it is necessary to increase the integration of pilot and demonstra-tion technologies and complete process construction of CO2 mineralization utilization technology to lay technical support for the industrial development of large-scale pollution reduction and carbon reduction technologies.
Keywords：CO2 captureindustrial solid wasteCO2 mineralizationabsorption and mineralization integrationreduce pollution and carbon
Publication Date：2024-07-28
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：12( 1-12 )