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A simplified adsorption model for water vapor adsorption on activated carbon

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Abstract

A simplified model was developed to describe the water vapor adsorption on activated carbon. The development of the simplified model was started from the original model proposed by DO and his co-workers. Two different kinds of carbon materials were prepared for water vapor adsorption, and the adsorption experiments were conducted at different temperatures (20–50 °C) and relative humidities (5%–99%) to test the model. It is shown that the amount of adsorbed water vapor in micropore decreases with the temperature increasing, and the water molecules form larger water clusters around the functional group as the temperature is up to a higher value. The simplified model describes reasonably well for all the experimental data. According to the fitted values, the parameters of simplified model were represented by the temperature and then the model was used to calculate the water vapor adsorption amount at 25 °C and 35 °C. The results show that the model can get relatively accurate values to calculate the water vapor adsorption on activated carbon.

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Authors and Affiliations

  1. School of Energy Science and Engineering, Central South University, Changsha, 410083, China

    Xiao-long Yao  (姚小龙), Li-qing Li  (李立清), Hai-long Li  (李海龙) & Wei-wu Ma  (马卫武)

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  1. Xiao-long Yao  (姚小龙)
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  2. Li-qing Li  (李立清)
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  3. Hai-long Li  (李海龙)
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  4. Wei-wu Ma  (马卫武)
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Corresponding author

Correspondence to Li-qing Li  (李立清).

Additional information

Foundation item: Projects(21376274, 51206192) supported by the National Natural Science Foundation of China

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Yao, Xl., Li, Lq., Li, Hl. et al. A simplified adsorption model for water vapor adsorption on activated carbon. J. Cent. South Univ. 21, 1434–1440 (2014). https://doi.org/10.1007/s11771-014-2082-5

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  • DOI: https://doi.org/10.1007/s11771-014-2082-5

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