摘要
针对传统吸附剂对大气挥发性污染物吸附效率低、吸附饱和后再生困难和易受环境中水蒸气影响的问题,提出一种新型高分子树脂复合材料的制备,并对其吸附性能进行研究。实验结果表明,复合材料对甲苯动态吸附饱和容量约为550mg·g^(-1),静态吸附饱和容量明显高于其他吸附剂,在RH 80%高湿度条件下,仍保持其较高的甲苯吸附效率和较大的吸附量,在350℃前,ZIF-8/PDVB复合材料质量几乎不出现损失,表现出良好的吸附性能和稳定性。在温度和时间分别为80℃和20min的真空脱附条件下进行10次脱附循环实验处理后,复合材料吸附效率超过90%,脱附效率维持在100%左右,表现出良好的再生循环性能。因此,复合材料可以在含有一定湿度的废气中发挥作用,表现出较好的实际应用前景。
In response to the problems of low adsorption efficiency of traditional adsorbents for atmospheric volatile pollutants,difficulty of regeneration after adsorption saturation,and susceptibility to environmental water vapor,a new type of polymer resin composite material is proposed for preparation and its adsorption performance is studied.The experimental results showed that the dynamic adsorption saturation capacity of the composite material for toluene was about 550mg·g^(-1),and the static adsorption saturation capacity was significantly higher than other adsorbents.Under high humidity conditions of RH 80%,it still maintained its high toluene adsorption efficiency and large adsorption capacity.Before 350℃,there was almost no loss in the quality of ZIF-8/PDVB composite material,demonstrating good adsorption performance and stability.After 10 desorption cycles under vacuum conditions with temperature and time of 80℃ and 20 minutes,the adsorption efficiency of the composite material exceeded 90%,and the desorption efficiency remained around 100%,demonstrating good regeneration cycle performance.It can play a role in exhaust gas containing a certain humidity,showing good practical application prospects.
作者
唐超
TANG Chao(Sichuan Province Aba Ecological Environment Monitoring Center,Aba 624500,China)
出处
《化学工程师》
CAS
2023年第12期49-53,共5页
Chemical Engineer
关键词
吸附材料
吸附性能
挥发性污染物处理
空气净化
adsorption materials
adsorption performance
volatile pollutant treatment
air purification
