Binary Adsorption Equilibrium of Benzene-Water Vapor Mixtures on Activated Carbon

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Binary Adsorption Equilibrium of Benzene-Water Vapor Mixtures on Activated Carbon

GAO Huasheng^a; WANG Dahui^a; YE Yunchun^b; TAN Tianen^a

^a Department of Environmental Engineering, Zhejiang University, Hangzhou 310027, China　
^b Zhenhai Refining & Chemical Co., Ltd., Ningbo 315207, China

Received:1900-01-01 Revised:1900-01-01 Online:2002-06-28 Published:2002-06-28
Contact: GAO Huasheng

苯-水混合蒸气在活性炭上的二元吸附平衡

高华生^a; 汪大翚^a; 叶芸春^b; 谭天恩^a

^a Department of Environmental Engineering, Zhejiang University, Hangzhou 310027, China　
^b Zhenhai Refining & Chemical Co., Ltd., Ningbo 315207, China

通讯作者: 高华生

Abstract

Abstract: Adsorption equilibrium isotherms of benzene in the concentration range of 500-4000mg@m-3 on
two commercial activated carbons were obtained using long-column method under 30℃ and
different humidity conditions. Results show that the benzene and water vapors have
depression effects upon the adsorption of each other and that the unfavorable effect of
water vapor resembles its single-component isotherm on activated carbon. A competitive
adsorption model was proposed to explore the depression mechanisms of the non-ideal, non-
similar binary adsorption systems. A modified Polanyi-Dubinin equation was set up to
correlate the binary adsorption equilibrium and to calculate the isotherms of benzene on
activated carbon in presence of water vapor with considerable precision.

Key words: activated carbon, volatile organic vapors, adsorption isotherm, humidity, equilibrium, potential theory

摘要： Adsorption equilibrium isotherms of benzene in the concentration range of 500-4000mg@m-3 on
two commercial activated carbons were obtained using long-column method under 30℃ and
different humidity conditions. Results show that the benzene and water vapors have
depression effects upon the adsorption of each other and that the unfavorable effect of
water vapor resembles its single-component isotherm on activated carbon. A competitive
adsorption model was proposed to explore the depression mechanisms of the non-ideal, non-
similar binary adsorption systems. A modified Polanyi-Dubinin equation was set up to
correlate the binary adsorption equilibrium and to calculate the isotherms of benzene on
activated carbon in presence of water vapor with considerable precision.

关键词: activated carbon;volatile organic vapors;adsorption isotherm;humidity;equilibrium; potential theory

GAO Huasheng, WANG Dahui, YE Yunchun, TAN Tianen. Binary Adsorption Equilibrium of Benzene-Water Vapor Mixtures on Activated Carbon [J]. .

高华生, 汪大翚, 叶芸春, 谭天恩. 苯-水混合蒸气在活性炭上的二元吸附平衡[J]. CIESC Journal.

References

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