It is important to develop an energy- and cost-efficient method of concentrating phosphoric acid because it is widely used in several industries. Three different ceramic membranes, namely, a silicon carbide (SiC) membrane, a TiO₂-coated SiC membrane, and a sandwich membrane of TiO₂ between SiC, were successfully applied for the selective separation of water from spent phosphoric acid. SiC was selected as raw material, TiO₂ as supporting material. The membrane was characterized by various instruments to check all parameters. Using the solution diffusion, statistical modeling of these membranes was performed and the membrane parameters, such as membrane diffusivity and mass transfer coefficient, were calculated. By reducing the porosity of the membrane, the desired separation can be improved.

中文翻译：

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使用夹心碳化硅陶瓷膜去除废磷酸中的水

开发一种节能且具有成本效益的磷酸浓缩方法非常重要，因为它广泛用于多个行业。三种不同的陶瓷膜，即碳化硅 (SiC) 膜、TiO ₂涂覆的 SiC 膜和SiC 之间的 TiO ₂夹层膜，已成功应用于从废磷酸中选择性分离水。选用SiC为原料，TiO ₂作为支撑材料。通过各种仪器对膜进行表征以检查所有参数。使用溶液扩散，对这些膜进行统计建模并计算膜参数，例如膜扩散率和传质系数。通过降低膜的孔隙率，可以改进所需的分离。