Abstract In this work, the feasibility to elaborate a membrane support for water treatment from Cameroonian clays, coconut husks and eggshells was assessed. Twenty-five plastic formulations with different percentage of raw materials were tested and consolidated by thermal treatment to get the membrane supports. Mercury porosimetry allowed to select five supports potentially eligible for water filtration since their porosities were higher than 50%. Mechanical resistance and water absorption studies then allowed to choose the best ceramic membrane support S1510 (made from clays 75%, coconut husks 15% and eggshells 10% after sintering at 900 °C). EDX, XRD, TGA/DSC, FTIR and SEM characterizations techniques were used to characterize the raw materials and selected membrane support. The selected support has 52% of porosity, a mean pore diameter of 0.08 μm and a water permeability of 14,013 L/h/m2/bar. The ability of the support to retain E. coli bacteria present in a contaminated water was finally assessed. Retention tests showed 90% of E. coli removal, making this membrane support interesting for microfiltration purpose.

中文翻译：

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用喀麦隆粘土、椰子壳和蛋壳制作新的陶瓷膜支撑：用于大肠杆菌滞留的应用

摘要 在这项工作中，评估了用喀麦隆粘土、椰子壳和蛋壳制作用于水处理的膜支撑的可行性。对 25 种不同原料比例的塑料配方进行了测试和热处理，以获得膜支撑。由于孔隙率高于 50%，汞孔隙率测定法允许选择五种可能适合水过滤的载体。然后机械阻力和吸水率研究允许选择最好的陶瓷膜支撑 S1510（在 900°C 下烧结后由 75% 的粘土、15% 的椰子壳和 10% 的蛋壳制成）。EDX、XRD、TGA/DSC、FTIR 和 SEM 表征技术用于表征原材料和选定的膜载体。所选载体的孔隙率为 52%，平均孔径为 0。08 μm，透水性为 14,013 L/h/m2/bar。最后评估了支持物保留受污染水中存在的大肠杆菌的能力。保留测试显示 90% 的大肠杆菌被去除，使这种膜支持对微滤目的感兴趣。