Abstract The oily wastewater has been widely concerned owing to growing industrial wastewater and marine pollution. Herein, a cellulose-based oil/water separation membrane was fabricated using a very simple alternating soaking process (ASP). First, the sodium alginate was coated on the cellulose membrane surface (filter paper), and then CaCO3 particles were assembled onto the membrane surface through ASP, finally we can get the superhydrophilic/underwater superoleophobic cellulose membrane (FP@SA/CaCO3) for oil/water separation. The underwater oil contact angle (OCA) of FP@SA/CaCO3 is 151.1°, which indicated that FP@SA/CaCO3 has good underwater superoleophobicity. Moreover, for different oil/water mixtures, the FP@SA/CaCO3 membrane has outstanding separation efficiency of over 99.2 % and the flux of over 400 L m−2 h−1. Besides, even after 20 reuse, FP@SA/CaCO3 still showed a high flux and separation efficiency, indicating FP@SA/CaCO3 has good reusability. The FP@SA/CaCO3 membrane with low cost and high performance shows a good application market for oily wastewater remediation in the future.

中文翻译：

---

含CaCO3颗粒的超亲水/水下超疏油纤维素膜的简便制备用于油/水分离

摘要 含油废水由于日益增多的工业废水和海洋污染而受到广泛关注。在此，使用非常简单的交替浸泡工艺 (ASP) 制造了基于纤维素的油/水分离膜。首先将海藻酸钠包覆在纤维素膜表面（滤纸）上，然后通过ASP将CaCO3颗粒组装到膜表面，最终得到用于油的超亲水/水下超疏油纤维素膜（FP@SA/CaCO3） /水分离。FP@SA/CaCO3 的水下油接触角（OCA）为 151.1°，表明 FP@SA/CaCO3 具有良好的水下超疏油性。此外，对于不同的油/水混合物，FP@SA/CaCO3 膜具有超过 99.2% 的出色分离效率和超过 400 L m-2 h-1 的通量。此外，即使经过 20 次再利用，FP@SA/CaCO3 仍然表现出较高的通量和分离效率，表明 FP@SA/CaCO3 具有良好的重复使用性。低成本、高性能的FP@SA/CaCO3膜显示了未来含油废水修复的良好应用市场。