Adsorption of multicomponent volatile organic compounds on semi-coke

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• 作者：Li Yanxu ; Chen Jiangyao ; Sun Yinghuang
• 关键词：Design storm ; Flood control ; Water supply ; Multiple duration ; AR(1) model
• 刊名：Carbon
• 出版年：2008
• 期刊代码：10_00086223
• 类别：ms
• 出版时间：May 2008
• 卷：46
• 期：6
• 页码：858-863
• 文件大小：400 K

摘要

Experimental and theoretical studies were made on the adsorption of toluene, ethyl acetate, benzene and their binary and ternary mixtures by semi-coke in an isothermal condition of 293 K. Breakthrough curves of these volatile organic compounds (VOCs) were measured by a gas chromatograph. The results showed that the adsorptive orders of these three VOCs were: toluene > ethyl acetate > benzene. The phenomenon of “roll-up” was observed in the breakthrough curves and under this condition, the more strongly adsorbed species displace the weaker ones. H₂O₂ was used to activate the semi-coke and the activation enhanced the adsorption capacity of semi-coke to all the three VOCs, especially to toluene. The extended Langmuir equation agrees well with the experimental isotherm data for binary and ternary mixtures and the error is below 5%.