Abstract
ABSTRACTModel permits analyzing the influence of temperature on resistance of concentration layer and transmembrane flux. Proposed model is based on the following assumptions: (1) membrane morphology doesn’t depend on temperature; (2) membrane rejection, and other transport characteristics of membrane are invariant with coordinate; (3) specific water permeability of membrane was based on exponential dependence of viscosity vs. temperature; (4) dependence of membrane rejection on temperature is assumed to be linear. Dependence of normalized permeability upon temperature is strongly influenced by the CP degree (and surface concentration), namely, (A) at low CP degree the growth of temperature causes growth of normalized permeability, while at (B) high values of CP degree the system is characterized by opposite behavior: the normalized permeability goes down with growth of temperature. The model allows analyzing the influence of temperature and degree of membrane rejection on concentration resistance and transmembrane flux. Calculated data are attached. The presented solution can be segmented and built into algorithm for calculation of longitudinal profile of CP degree and for optimization of regime parameters against temperature.
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