煤炭转化2025，Vol.48Issue(4)：106-118,13.DOI:10.19726/j.cnki.ebcc.202504010
煤基固废衍生多孔炭孔结构对氯苯吸附行为的影响机制
Insight into the impacts of pore structures of activated carbon derived from coal-based solid waste on the adsorption behaviors of chlorobenzene in flue gas
摘要
Abstract
Chlorinated VOCs(Cl-VOCs)have become a major challenge in VOCs control due to their high toxicity.Among various removal technologies,activated carbon adsorption stands out as one of the most effective methods because of its porous structure,low cost,and high effi-ciency.However,the influence of activated carbon pore structures on the adsorption behavior of Cl-VOCs has not been systematically studied,limiting further improvement in their removal efficiency.In this study,coal-based solid waste gasification slag was used as the raw material and further acti-vated by ZnCl2 and KOH to obtain various carbons with hierarchical pores,and the impacts of acti-vated carbon pore structure on the adsorption behavior of chlorobenzene was further clarified.The results demonstrate that using KOH activating agent can produce porous carbon with the best adsorp-tion performance.At a chlorobenzene concentration of 250 ppm and an adsorption temperature of 120℃,the adsorption capacity reaches 95.4 mg/g.When ZnCl2 is used as activator,the adsorption rate is the highest.Moreover,micropores serve as the main adsorption sites for chlorobenzene,while mesoporous plays a key role in enhancing the adsorption rate.In addition,different dynamic adsorp-tion models and kinetic models were employed to fit the adsorption process of chlorobenzene,and it indicates that the Boltzmann model and Yoon-Nelson model are suitable for describing the adsorption behaviors of chlorobenzene on activated carbon.关键词
煤气化渣/多孔炭/氯苯/吸附/孔结构Key words
coal-based solid waste/activated carbon/chlorobenzene/adsorption/pore structures分类
化学化工引用本文复制引用
赵文平,丁肖肖,侯亚芹,李巧艳,曾泽泉,黄张根..煤基固废衍生多孔炭孔结构对氯苯吸附行为的影响机制[J].煤炭转化,2025,48(4):106-118,13.基金项目
国家自然科学基金资助项目(U23A20100)、国家重点研发计划重点专项(2022YFC3701900)、山西省重点研发计划项目(202302090301015)和山西省基础研究计划项目(202303021212374). （U23A20100）
