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Enhancing comprehension of water vapor on adsorption performance of VOC on porous carbon materials and its application challenge

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FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING 2024年第9期18卷 110-0页

作者： Yao, Xiaolong Wan, Kuan Yu, Wenxin Liu, Zheng Beijing Technol & Business Univ Sch Ecol & Environm Beijing 100048 Peoples R China Beijing Technol & Business Univ State Environm Protect Key Lab Food Chain Pollut C Beijing 100048 Peoples R China Guangxi Univ Sch Resources Environm & Mat Nanning 530004 Peoples R China

Volatile organic compounds (VOC) have been proven to cause considerable harm to both the ecological environment and human health. Anthropogenic VOC emissions are primarily generated by the industrial sector. The utilization of porous carbon as an adsorbent has emerged as an effective method for the efficient removal of VOC from industrial sources. However, during the actual production processes, VOC exhaust gases are often mixed with water vapor, which poses challenges for adsorption purification. This review provides a comprehensive overview of the remarkable advancements in various carbon materials in terms of their ability to adsorb both VOC and water vapor. Additionally, it systematically summarizes the influence of surface groups on adsorbents and the molecular properties of VOC on their adsorption by carbon materials. Furthermore, this review introduces the mechanism underlying adsorption-adsorbent interactions and discusses the construction of models for adsorbing water vapor and VOC. The challenges associated with the application of carbon materials for VOC adsorption in humid environments are also addressed. This review aims to offer theoretical and technical guidance for the effective purification of moist VOC waste gases emitted from industrial sources, thereby achieving precise control of VOC emissions.

关键词： Adsorption Water vapor Carbon-based adsorbents surface functional groups VOC properties VOLATILE ORGANIC-COMPOUNDS GRANULAR ACTIVATED CARBON MOLECULAR-SIEVE MEMBRANES surface functional-groups AQUEOUS-SOLUTIONS PERVAPORATION DEHYDRATION COMPETITIVE ADSORPTION EFFECTIVE ADSORBENT REMOVAL BIOCHAR

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