活性炭吸附苯系物性能的研究进展  

A critical review on BTEX adsorption by activated carbon

作　　者：张超锋 李荣[1,2,3] 石先进 黄宇[1,2] ZHANG Chaofeng;LI Rong;SHI Xianjin;HUANG Yu(Key Laboratory of Aerosol Chemistry&Physics,State Key Laboratory of Loess and Quaternary Geology,Institute of Earth Environment,Chinese Academy of Sciences,Xi’an 710061,China;CAS Center for Excellence in Quaternary Science and Global Change,Xi’an 710061,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院地球环境研究所黄土与第四纪地质国家重点实验室,中国科学院气溶胶化学与物理重点实验室,西安710061 [2]中国科学院第四纪科学与全球变化卓越创新中心,西安710061 [3]中国科学院大学,北京100049

出　　处：《地球环境学报》2024年第1期44-58,共15页Journal of Earth Environment

基　　金：国家自然科学基金项目(51878644)。

摘　　要：人类活动排放的挥发性有机物(VOCs),尤其是苯系物(BTEX),不仅影响空气质量,还会对人体健康产生不同程度的危害。室内苯系物具有浓度低、释放周期长及来源复杂等特点。由于活性炭(AC)优异的孔道结构和易调控的表面化学性质,采用活性炭吸附苯系物是封闭/半封闭空间空气污染控制的最有效策略之一。本文综述了封闭/半封闭空间苯系物的理化特征、活性炭的物理化学性质及其吸附苯系物的影响因素。这些因素主要包括活性炭物理结构、表面化学性质、苯系物分子结构和吸附条件。此外,还进一步探讨了活性炭再生技术,并展望了针对封闭/半封闭空间苯系物污染的活性炭吸附技术的改进策略。Background,aim,and scope With the development of urbanization and industrialization,volatile organic compounds(VOCs)emitted by human activities exhibit serious impacts on environment and human health.Therefore,it is essential to control the excessive emission of VOCs.Benzene series are the typical components of indoor VOCs and possess the characteristics of complex source,low concentration and long emission period.Taking into account the advantages and disadvantages of various VOCs control technologies,adsorption technology is an economical and effective method for indoor benzene series control.Activated carbon is one of the most promising adsorbents because of its low cost,acid and alkali resistance,good thermal stability,large specific surface area,and fast adsorption rate.However,activated carbon shows limited adsorption capacity and needs modifications to improve VOCs purification performance.This article summarizes relative influencing factors and modification methods.In addition,the interaction between activated carbon and benzene series has been elaborated in depth,which provides a more in-depth understanding for the study of activated carbon adsorption of benzene series.Materials and methods This article first reviews the sources of benzene series and their physical and chemical properties.Subsequently,the preparation process of activated carbon and its physical indexes,chemical indexes and adsorption indexes are introduced.Then the adsorption performance of activated carbon toward benzene series is summarized.Finally,the factors influencing activated carbon adsorption performance toward benzene series and the regeneration method of activated carbon are discussed.Results Both the specific surface area and pore structure of activated carbon can affect their adsorption performance.Generally,large specific surface area can provide abundant adsorption sites,thereby improving the adsorption performance.The macropores and mesoporou serve as a channel for the adsorption and transport of benzene series,and the mi

关 键 词：活性炭 吸附 苯系物 表面物理化学性质 再生技术 

分 类 号：X701[环境科学与工程—环境工程]