Abstract Membrane technology has unique advantages over centrifugal equipment and has been widely applied. In this work, the hydrophobic ceramic membranes were used to remove phospholipid micelles from crude rapeseed oil, and their fouling mechanism, control, cleaning and influence on oil quality were investigated. The results of four different treatments showed that enzyme-membrane binding was the most effective degumming method. The flux performance can meet the needs of small-scale oil production. Concentration experimental results showed that the fouling mechanism was a combination of intermediate blockage and cake. Although increasing pressure, temperature, concentration, flow rate, and pore size could all reduce available area and increase resistance, the effects of TMP and pore size are the most significant in these factors. Non-cleaning resistance was very small under all conditions, and increasing transmembrane pressure and pore size promoted non-cleaning resistance. Increasing temperature and cross-flow velocity significantly reduced the resistance of cleanable pollution. In terms of membrane fouling control, the critical and threshold transmembrane pressures of the large-pore membrane were lower than those of the small-pore membrane and decreased with increasing concentration. Fouled membranes can be cleaned and restored by oil without phospholipid micelles, and the flux recovery rate of the membranes can exceed 85% after 10 reuses. The membranes removed phospholipids and water and were beneficial for decreasing free fatty acids and peroxide values. Therefore, the enzyme-membrane binding can be considered for gradual use in the production of small-scale oil.

中文翻译：

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酶膜结合法去除粗菜籽油中的磷脂

摘要 膜技术相对于离心设备具有独特的优势，得到了广泛的应用。在这项工作中，使用疏水陶瓷膜去除粗菜籽油中的磷脂胶束，研究其污染机理、控制、清洁和对油质的影响。四种不同处理的结果表明，酶-膜结合是最有效的脱胶方法。助焊剂性能可满足小规模采油的需要。浓缩实验结果表明，结垢机理是中间堵塞和滤饼相结合。虽然增加压力、温度、浓度、流速和孔径都会减少可用面积并增加阻力，但 TMP 和孔径的影响在这些因素中最为显着。在所有条件下，非清洁阻力都非常小，增加跨膜压力和孔径会促进非清洁阻力。提高温度和错流速度显着降低了对可清洁污染的抵抗力。在膜污染控制方面，大孔膜的临界跨膜压力和阈值跨膜压力低于小孔膜，并随着浓度的增加而降低。污染的膜可以用油清洗修复，不含磷脂胶束，膜重复使用10次后通量回收率可达85%以上。该膜去除了磷脂和水，有利于降低游离脂肪酸和过氧化值。因此，酶-膜结合可考虑逐步用于小规模石油生产。