商用活性炭对乙酸酯类挥发性有机物的动态吸附  

Dynamic adsorption of acetate volatile organic compounds by commercial activated carbon

作　　者：杨旭东 李茜 汪大闪[1] 田刚 崔龙哲 赵玉凤 YANG Xudong;LI Qian;WANG Dashan;TIAN Gang;CUI Longzhe;ZHAO Yufeng(Wuhan Xurihua Environment&Technology Development Co.,Ltd.,Wuhan 430030,China;South-Central Minzu University,College of Resources and Environment,Wuhan 430074,China;South-Central Minzu University,Key Laboratory of Resources Conversion and Pollution Control of the State Ethnic Affairs Commission,Wuhan 430074,China)

机构地区：[1]武汉旭日华环保科技股份有限公司,武汉430030 [2]中南民族大学资源与环境学院,武汉430074 [3]中南民族大学资源转化与污染控制国家民委重点实验室,武汉430074

出　　处：《中南民族大学学报(自然科学版)》2025年第4期440-446,共7页Journal of South-Central Minzu University(Natural Science Edition)

基　　金：中央高校基本科研业务费专项资金资助项目(CZQ23012)。

摘　　要：挥发性有机化合物(VOCs)是PM_(2.5)和臭氧污染的重要前体物,其控制排放是降低PM_(2.5)浓度、O_(3)污染程度的主要途径之一.活性炭吸附法具有能效高、经济环保等优点,是一种应用广泛的VOCs控制方法.以颗粒活性炭(AC)为吸附剂,系统研究了酯类有机化合物的动态吸附行为.结果表明:对于分子结构相似的酯类有机物,活性炭对其饱和吸附量与分子量呈良好的正相关关系,与饱和蒸气压呈负相关关系.动态模拟结果显示:Thomas和YoonNelson模型都能很好地描述酯类有机物在活性炭上的吸附行为,前者对吸附穿透曲线上的拟合程度很高,后者对半饱和时间有较准确的预测.动力学结果表明:活性炭吸附酯类有机物的动力学模型的适用性的顺序为Bangham方程优于伪一级动力学方程,更优于伪二级动力学方程.VOCs are critical precursors of PM_(2.5) and ozone pollution,and controlling their emission is one of the main ways to reduce PM_(2.5) concentration and O_(3) pollution.Activated carbon adsorption method is a widely used VOCs control method due to its advantages of high energy efficiency,economy and environmental friendliness.The dynamic adsorption behavior of ester organic compounds was systematically studied using granular activated carbon(AC)as adsorbent.The results showed that for the ester organics with similar molecular structure,the saturated adsorption capacity of ester compounds on AC had a good positive correlation with the molecular weight,and a negative correlation with the saturated vapor pressure.The dynamic simulation results showed that both Thomas and Yoon-Nelson models could well describe the adsorption behavior of ester organics on AC.The former had a high degree of fitting on the adsorption breakthrough curve,and the latter had a more accurate prediction of the semi-saturation time.The kinetic results showed that Bangham equation was better than the pseudo-first order and pseudo-second order equations for fitting the kinetic model of AC adsorption of ester organics.

关 键 词：酯类有机化合物 活性炭 动态吸附 动力学模拟 

分 类 号：X51[环境科学与工程—环境工程]