A coal gasification-based multi-product system remains one of the important solutions to sustainable energy development in China, and as a result, the amount of slag generated from gasification has been increasing year by year. Slag, as one of the solid waste, will seriously damage the ecological environment if not properly and effectively treated. Therefore, the comprehensive utilization of slag has become a hot research topic.However, the large specific surface area and porous structure of the gasified slag make it an ideal raw material for preparing porous adsorbent materials. The sources, properties, and applications of coal gasification slag, the preparation methods of porous materials were introduced, and the applications of porous materials based on coal gasification slag in capturing CO2, removing phenols from water, treating dye-contaminat-
ed wastewater, and treating biomass tar were discussed. It was provided that a new perspective for the effective treatment of industrial waste in chemical enterprises.
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