Conventional wastewater treatment systems generally require multiple steps and complex procedures to remove aqueous pollutants and oil contaminants from polluted water. Herein, we fabricate an underwater superoleophobic membrane by cross-linking konjac glucomannan on pristine fabrics, demonstrating that the concept of oil–water separation and the principle of aqueous pollutant removal can be integrated. Such biopolymer-modified fabric not only separates oil–water mixtures with high efficiency (up to 99.9%), but also exhibits the intriguing characteristic of removing water-soluble pollutants (including polyaromatic dyes and heavy metal ions). As a proof of concept, the synthetic wastewater purified with biopolymer membranes was used to cultivate and irrigate pinto beans, causing no observable deleterious effect on seed germination and growth. These results further confirm the biocompatibility and effectiveness of biopolymer membranes, offering an encouraging solution to challenges including wastewater treatment and cleanup of oil spills.

中文翻译：

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高度生物相容性，水下超亲水性和多功能生物聚合物膜，可有效分离油水和去除水污染物

传统的废水处理系统通常需要多个步骤和复杂的程序才能从污水中去除水污染物和油污染物。在这里，我们通过在原始织物上交联魔芋葡甘露聚糖来制造水下超疏油膜，证明油水分离的概念和水污染物的去除原理可以整合在一起。这种经过生物聚合物改性的织物不仅可以高效分离油水混合物（高达99.9％），而且还具有去除水溶性污染物（包括多环芳族染料和重金属离子）的吸引人的特性。作为概念的证明，使用生物聚合物膜纯化的合成废水用于种植和灌溉斑豆，对种子的发芽和生长没有明显的有害影响。