Adsorption/desorption of toluene on a hypercrosslinked polymeric resin in a highly humid gas stream |
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Authors: | Bing Zhou Bin Sun Wenjuan Qiu Ying Zhou Junqian He Xiaoai Lu Hanfeng Lu |
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Affiliation: | 1.Institute of Catalytic Reaction Engineering, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China;2.College of Environment, Zhejiang University of Technology, Hangzhou 310014, China |
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Abstract: | In many sources of volatile organic compounds (VOCs), large amounts of water vapor come from the air and the reactors. The relative humidity (RH) of exhaust gas is normally > 60% and is supersaturated. Maintaining the property of adsorbent on VOCs in a highly humid gas stream is a serious industrial problem. In this study, the adsorption/desorption behavior of toluene in a micro-mesoporous polymeric resin was investigated in a highly humid environment to explore the influence of abound water vapor on resin adsorption and regeneration. This resin could selectively adsorb toluene at an RH of 80%, and its adsorption property was unaffected by the presence of water vapor. In the case of humidity saturation, the resin displayed a high adsorption capacity at a moisture content of < 30%. Therefore, the polymer resin is an excellent water-resistant adsorbent of VOCs. In the regenerative experiment, the resin maintained its original adsorption capability after four adsorption/desorption cycles of toluene purging with nitrogen gas at 120 °C. The resin exhibited excellent regeneration performance at high humidity. |
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Keywords: | Corresponding authors at: Zhejiang University of Technology 18 Chaowang Road Hangzhou 310014 China Adsorption/desorption volatile organic compounds (VOCs) High humidity Macromolecule resin |
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