Effect of relative humidity on adsorption capacity of organic vapors on activated carbon and prediction by the modified D-R equations

摘要：

The effects of the presence of water vapor on adsorption of benzene, toluene, acetone and ethyl acetate were studied. Results show that competitive adsorption of water in binary system had depression effect on the adsorption of organic vapors, and the depression effect of humidity on the adsorption capacity of organic vapors increases with an increase in relative humidity and polarity of organic vapors molecules. Based on the Polanyi adsorption potential theory, the modified D-R equation was proposed by introducing a concentration effect coefficient variable A, and structural adjusting constant B, and water adsorption capacity in certain relative humidity Ww . The comparison of prediction value and experiment value indicates that the modified D-R equation is accurate with relative error 5.0％, and can be used to explain and predict the equilibrium adsorption capacity of organic vapor in the presence of water.

关键词： activated carbon organic vapors adsorption relative humidity D-R equation

作者: Cao Li Huang Xuemin Feng Fangning Ji Fengli

作者单位: Xian University of Architecture & Technology, Xian, Shaanxi, 710055, China

会议类型: 国际会议

会议名称: 2010 International Conference on Digital Manufacturing and Automation(2010 数字制造与自动化国际会议 ICDMA 2010)

会议地点: 长沙

会议语种:英文

页码: 607-610

在线出版日期: 2010-12-18（万方平台首次上网日期，不代表论文的发表时间）