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Non-equilibrium thermodynamics analysis and its application in interfacial mass transfer

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Abstract

Interfacial transfer plays an important role in multi-phase chemical processes. However, it is difficult to describe the complex interfacial transport behavior by the traditional mass transfer model. In this paper, we describe an interfacial mass transfer model based on linear non-equilibrium thermodynamics for the analysis of the rate of interfacial transport. The interfacial transfer process rate J depends on the interface mass transfer coefficient K, interfacial area A and chemical potential gradient Δµ at the interface. Potassium compounds were selected as model systems. A model based on linear non-equilibrium thermodynamics was established in order to describe and predict the transport rate at the solid-solution interface. Together with accurate experimental kinetic data for potassium ions obtained using ion-selective electrodes, a general model which can be used to describe the dissolution rate was established and used to analyze ways of improving the process rate.

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Authors and Affiliations

  1. State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing University of Technology, Nanjing, 210009, China

    XiaoHua Lu & YuanHui Ji

  2. State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai, 200237, China

    HongLai Liu

Authors
  1. XiaoHua Lu
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  2. YuanHui Ji
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  3. HongLai Liu
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Correspondence to XiaoHua Lu.

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Lu, X., Ji, Y. & Liu, H. Non-equilibrium thermodynamics analysis and its application in interfacial mass transfer. Sci. China Chem. 54, 1659–1666 (2011). https://doi.org/10.1007/s11426-011-4308-9

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  • DOI: https://doi.org/10.1007/s11426-011-4308-9

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