Research Progress in the Preparation and Application of Environmental Functional Materials Based on the Properties of Coal Gasification Slag
With the increasing amount of coal gasification slag(CGS)being generated and stockpiled,it is gradually becoming an urgent problem for the coal chemical base.CGS is rich in SiO2,Al2O3,residual carbon and mineral nutrients,and has a large specific surface area and well-developed pores,making it a natural advantage in the preparation of adsorbents(mesoporous silica,molecular sieves,ceramic membranes,coagulants,etc.),soil conditioners(soil conditioners,compost,sand improvement,etc.),catalysts,etc.The article analyzes the particle size distribution,pore structure,chemical mineral composition and elements composition of CGS,summarizes the preparation of CGS-based mesoporous silica,molecular sieves and their composites,and focuses on the adsorption performance of CGS-based porous materials for pollutants such as heavy metals,organic dyes,ammonia and nitrogen,and the progress of research on the application of CGS to soil conditioners,compost additives and sandy soil improvement.In order to improve the economic efficiency of enterprises,future research should enhance the graded utilization of CGS to maximize the benefits of their respective utilization.
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NSTL
万方数据
维普
