Abstract

PTMSP membranes reinforced with a metal wire mesh have been fabricated and experimentally studied to increase the permeability and mechanical properties of poly(1-trimethylsilyl-1-propyne) (PTMSP) membranes in the course of thermopervaporation (TPV) removal of butanol from fermentation broths. The effect of the material wire of the mesh (stainless steel and bronze) and mesh size (30–40 μm) on the flux and separation factor in the course of thermopervaporation separation of aqueous solutions of butanol has been experimentally studied. It is shown in this work that the use of a metal wire mesh as a support instead of traditional commercial porous supports does not reduce the separation properties of a PTMSP membrane in the course of TPV removal of butanol from model fermentation mixtures. Separation modes that make it possible to obtain permeate fluxes above 1 kg m⁻² h⁻¹ have been found. It is shown in this work that the permeability coefficient of water through PTMSP membranes is 2.5 × 10⁻⁵ mol m⁻² h⁻¹ kPa⁻¹ and does not depend on the temperature of the feed and thickness of the membranes.

中文翻译：

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高性能增强的PTMSP膜，用于热蒸发去除水性介质中的醇

摘要

制备了金属丝网增强的PTMSP膜并进行了实验研究，以在热过蒸发（TPV）去除发酵液中丁醇的过程中提高聚（1-三甲基甲硅烷基-1-丙炔）（PTMSP）膜的渗透性和机械性能。 。实验研究了网孔（不锈钢和青铜）的金属丝和网孔尺寸（30–40μm）对丁醇水溶液热过蒸发分离过程中通量和分离因子的影响。在这项工作中表明，在从模型发酵混合物中TPV去除丁醇的过程中，使用金属丝网代替传统的商业多孔载体作为载体不会降低PTMSP膜的分离性能。^－2 h ^－1被发现。这项工作表明，水通过PTMSP膜的渗透系数为2.5×10 ^-5 mol m ^-2 h ^-1 kPa ^-1，并且与进料温度和膜厚度无关。