Utilizing solid waste materials to prepare loose and porous adsorbents is an effective way to address heavy metal ion pollution,achieving waste treatment with waste and efficient comprehensive utilization of resources.This study is based on the synergistic pore-forming mechanism of potassium hydroxide and urea,using coal gangue as the base material to prepare coal gangue-based porous carbon materials,and explores their adsorption effect on heavy metal Pb2+ions.The research results show that compared to coal gangue,the coal gangue-based porous carbon materials have a more loose and porous structure and a larger specific surface area,with higher surface activity;the adsorption experiments on Pb2+ions indicate that the coal gangue-based porous carbon materials have a stronger adsorption effect on Pb2+ions,higher adsorption capacity,and the adsorption process is chemical adsorption.
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