Abstract：The reasons for the variations in adsorption performance were investigated as they related to the effects of water vapor and hydrogen sulfide on the adsorption of carbon disulfide onto activated carbon and polymeric resin in a fixed bed column. The findings demonstrated that water, whether co-adsorbed or pre-adsorbed, had a much greater influence on the adsorption of carbon disulfide onto activated carbon than it did onto polymeric resin. This was primarily due to the fact that activated carbon had more oxygen-containing groups (hydroxy and carbonyl groups) with strong affinity for water molecules, which led to the water molecules occupying the adsorption sites. Pre-adsorbed hydrogen sulfide dramatically reduced the ability of carbon disulfide to adsorb onto activated carbon while having no impact on polymeric resin. The results of X-ray photoelectron spectroscopy (XPS) and pore structure analysis demonstrated that hydrogen sulfide reacted on the surface of activated carbon to produce by-products like elemental sulfur, resulting in a reduction of specific surface area and total pore volume by 59.6% and 57.3%, respectively. In addition, inverse gas chromatography was used to evaluate the dispersive components of the surface free energy of the two adsorbents. Higher surface free energy dispersive components were present in activated carbon. The dispersive components of surface free energy can be used to more effectively explain why activated carbon is better at adsorbing a single component of carbon disulfide than W-8resin when compared to pore structure parameters like specific surface area.
曲宏昌, 马佳凯, 龙超. 吸附树脂和活性炭吸附气体中二硫化碳的性能差异及成因研究[J]. 中国环境科学, 2023, 43(9): 4534-4541.
QU Hong-chang, MA Jia-kai, LONG Chao. An investigation of the causes of different adsorption properties of carbon disulfide vapor in gas on polymeric resin and activated carbon. CHINA ENVIRONMENTAL SCIENCECE, 2023, 43(9): 4534-4541.
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