Research and technological application progress on the treatment of VOCs by activated carbon adsorption process
VOCs are seriously harmful to human health and the environment.The adsorption process has various ad-vantages such as high VOCs removal efficiency and low cost,and plays an important role in the treatment of VOCs,the core lies in the development of VOCs adsorption functional materials.Due to the wide range of raw material sources,developed pore structure,and recyclability,activated carbon is often used as an adsorbent in VOCs treat-ment.This article reviews the research and application progress of activated carbon adsorption technology of VOCs treatment,elaborates on the key influencing factors and modification methods of activated carbon adsorption of VOCs,and summarizes the current process technology,regeneration methods,and application status based on practical ap-plications,aiming to provide theoretical guidance for the selection and process control of activated carbon.In product selection,suitable structures should be chosen based on the properties of VOCs and external operating conditions,and it is necessary to develop activated carbon with hydrophobic properties.In practical applications,coupling multi-ple adsorption processes is an important direction for the future development of VOCs adsorption processes.However,due to the complexity of VOCs components,one or more VOCs treatment processes can be reasonably selected based on actual conditions to ensure treatment effectiveness.For the activated carbon that adsorbs VOCs to saturation,rea-sonable regeneration,supplementation or replacement of activated carbon should be carried out from the perspective of economy and regeneration effect.
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