Conventional edible oil processing methods with all their drawbacks have not changed over the past decades. Therefore, the main novelty of this study is to develop a three-stage hybrid membrane process to remove phospholipids, pigments, and solvent from the crude canola oil miscella by combining ultrafiltration, nanofiltration, and pervaporation processes. For the first and second stages, ultrafiltration and nanofiltration membranes were prepared by phase inversion method using polyethersulfone as polymer, and triethylene glycol and polyethylene glycol as additives. Pervaporation for the first time was conducted for solvent recovery, using commercial polydimethylsiloxane composite membranes with different active layer thicknesses. Almost full rejection of phospholipids (>99.9%) was obtained by addition of both additives, and approximately remained constant by changing the additive concentration. A 91.49% reduction in the color of crude oil with a flux of 1.17 L/m².h was obtained at the end of the bleaching stage. The solvent recovery by the pervaporation process with the polydimethylsiloxane composite membranes showed the 100% oil rejection with acceptable flux. The proposed hybrid ultrafiltration/nanofiltration/pervaporation membrane process showed an excellent performance in terms of permeation flux, phospholipids rejection, and color reduction for refining crude canola oil and solvent recovery processes and meets the criteria of process intensification.

在过去的几十年中，具有所有缺点的传统食用油加工方法没有改变。因此，本研究的主要新颖之处在于开发了一种三阶段混合膜工艺，通过结合超滤、纳滤和渗透蒸发工艺，从粗菜籽油杂油中去除磷脂、色素和溶剂。对于第一和第二阶段，以聚醚砜为聚合物，三甘醇和聚乙二醇为添加剂，通过相转化法制备超滤和纳滤膜。使用具有不同活性层厚度的商用聚二甲基硅氧烷复合膜，首次进行渗透蒸发以回收溶剂。通过添加两种添加剂，几乎完全去除了磷脂 (>99.9%)，并通过改变添加剂浓度大致保持不变。原油颜色减少 91.49%，通量为 1.17 L/m^2名在漂白阶段结束时获得的.h。使用聚二甲基硅氧烷复合膜通过渗透蒸发过程回收的溶剂显示出 100% 的油截留率和可接受的通量。拟议的混合超滤/纳滤/渗透蒸发膜工艺在精炼芥花籽油和溶剂回收工艺的渗透通量、磷脂截留和颜色减少方面表现出优异的性能，符合工艺强化标准。