Abstract A model of the S-entropy production in a system with a membrane which separates non-electrolyte aqueous solutions was presented. The differences between fluxes in non-homogeneous and homogeneous conditions for volume and solute fluxes, respectively, are non-linear functions of the glucose osmotic pressure difference (OPD) in ranges dependent on the initial ethanol OPD. A decrease of ethanol OPD causes a shift of this range into the lower values of glucose OPD; this shift is also observed for negative values of glucose and ethanol OPDs. The coefficient of concentration polarization of the membrane as a function of glucose OPD has a sigmoidal shape. For suitably great negative values of glucose OPD this coefficient is very small, while for suitably high positive glucose OPD this coefficient is equal to 0.5. An increase of ethanol OPD at the initial moment causes a shift of this curve towards the direction of positive values of glucose OPD. In turn the S-entropy production in non-homogeneous conditions has low values for negative values of glucose OPD (convective range) while for suitably high positive glucose OPD it has greater values (diffusive and convective range). A change of ethanol OPD at the initial moment causes a shift of this curve along the horizontal axis.

中文翻译：

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浓度极化条件下的膜传输：三元非电解质溶液 S 熵产生的评估

摘要 提出了具有分离非电解质水溶液的膜的系统中S-熵产生的模型。体积和溶质通量在非均质和均质条件下的通量之间的差异分别是葡萄糖渗透压差 (OPD) 的非线性函数，其范围取决于初始乙醇 OPD。乙醇 OPD 的降低导致该范围向较低的葡萄糖 OPD 值移动；对于葡萄糖和乙醇 OPD 的负值也观察到这种转变。作为葡萄糖 OPD 函数的膜的浓差极化系数具有 S 形。对于适当大的葡萄糖 OPD 负值，该系数非常小，而对于适当高的正葡萄糖 OPD，该系数等于 0.5。在初始时刻乙醇 OPD 的增加导致该曲线向葡萄糖 OPD 的正值方向移动。反过来，非均匀条件下的 S 熵产生对于葡萄糖 OPD 的负值（对流范围）具有较低的值，而对于适当高的正葡萄糖 OPD，它具有较大的值（扩散和对流范围）。初始时刻乙醇 OPD 的变化导致该曲线沿水平轴移动。