Abstract This study is related to the development of low cost microfiltration (MF) membranes using cheap raw materials, namely clay and corn starch. Flat MF membranes were prepared by uniaxial dry pressing and sintered at firing temperature of 950 °C. Microstructure, porosity, permeability, shrinkage and flexural strength of the elaborated MF membranes were studied as function of corn starch content (0–20 wt.%). The experimental results indicated that the porosity and permeability of MF membranes increased with the increasing of corn starch content. However the flexural strength reduced from 16.3 to 10 MPa with the increasing of corn starch content from 0 to 20 wt.%. Moreover the addition of corn starch had no significant effect on the linear shrinkage. Elaborated MF membranes were used to treat wastewater from textile industry. The filtration results showed that the turbidity retention decreased with the increasing of corn starch content and all the turbidity retention values were greater than 80%. MF membranes with a satisfied porosity, permeability and mechanical strength were elaborated with the addition of 10 wt.% of corn starch.

中文翻译：

---

淀粉含量对低成本微滤膜性能的影响

摘要 本研究涉及使用廉价原材料（即粘土和玉米淀粉）开发低成本微滤 (MF) 膜。通过单轴干压制备扁平 MF 膜，并在 950 °C 的烧成温度下烧结。作为玉米淀粉含量 (0-20 wt.%) 的函数，研究了精心制作的 MF 膜的微观结构、孔隙率、渗透性、收缩率和弯曲强度。实验结果表明，MF膜的孔隙率和渗透率随着玉米淀粉含量的增加而增加。然而，随着玉米淀粉含量从 0 重量％增加到 20 重量％，抗弯强度从 16.3 MPa 降低到 10 MPa。此外，玉米淀粉的添加对线性收缩率没有显着影响。精心设计的 MF 膜用于处理来自纺织工业的废水。过滤结果表明，随着玉米淀粉含量的增加，浊度保留率降低，所有浊度保留值均大于80%。MF 膜具有令人满意的孔隙率、渗透性和机械强度，通过添加 10 wt.% 的玉米淀粉制成。