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Citation: Guo Zi-Cheng, Sun Shu-Qiao, Li Jian-Jun, Chen Xian-Tuo. Adsorptive Model and Isotherm of Water on Ettringite[J]. Acta Physico-Chimica Sinica, ;2000, 16(07): 667-671. doi: 10.3866/PKU.WHXB20000717 shu

Adsorptive Model and Isotherm of Water on Ettringite

1.
Department of Chemical Engineering,Heibei University of Science and Technology,Shijiazhuang 050018

Received Date: 18 October 1999
Available Online: 15 July 2000

The adsorption isotherm of water on ettringite was determined by an automatic microelectronic thermobalance. The adsorptive behavior of water on ettringite was analyzed by the experimental results. A modified Langmuir model of adsorption was used and the isotherm equation was derived. A characteristic equation for adsorption of water on ettringite was obtained by simulation with experimental data. Each adsorption isotherm at temperature 10-40 ℃could be derived conveniently from the characteristic equation.
- Ettringite,
- Water adsorption,
- Model,
- Isotherm equation
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