Arsenic-contaminated water has significant adverse impacts on human health and ecosystems. We developed a new adsorptive membrane by modifying the porous support layer of a phase inversion formed membrane for arsenic removal. Iron oxide (Fe₃O₄) microspheres were immobilized in the support layer of the membrane by reverse filtration, followed by dopamine polymerization. The prepared adsorptive membrane was compared with a virgin membrane without Fe₃O₄ microspheres and a Fe₃O₄ blended membrane in terms of membrane structures and separation performance. The adsorptive membrane prepared by our new method had comparable water permeability and rejection performance with the virgin membrane without Fe₃O₄ microspheres, but higher rejection performance and dynamic adsorption capacity than the membrane prepared by the conventional blending method. Both static and dynamic adsorption modes were used to evaluate the adsorption performance of the membranes. Our new adsorptive membrane also had excellent regeneration performance. After three regeneration cycles, the membrane was still capable of treating more than 2 tons of As-contaminated water/m². The adsorptive membrane of 1 m² could treat over 7 tons of water to the drinking water standard in terms of arsenic concentration during three regeneration cycles. Therefore, our adsorptive membrane may pave a new way for arsenic removal from water and ensuring drinking water security.

受砷污染的水对人类健康和生态系统具有重大不利影响。我们通过修饰相转化形成膜的多孔支撑层来去除砷，从而开发了一种新的吸附膜。通过反向过滤将氧化铁（Fe ₃ O ₄）微球固定在膜的支撑层中，然后进行多巴胺聚合。将制备的吸附膜与不含Fe ₃ O ₄微球和Fe ₃ O _4的纯膜进行比较。混合膜的膜结构和分离性能。用我们的新方法制备的吸附膜具有与不使用Fe ₃ O ₄微球的原始膜相当的透水性和截留性能，但是与常规掺混法制备的膜相比，其截留性能和动态吸附能力更高。静态和动态吸附模式均用于评估膜的吸附性能。我们的新型吸附膜还具有出色的再生性能。在三个再生循环之后，该膜仍然能够处理超过2吨的As污染水/ m ²。1 m ²的吸附膜在三个再生周期中，就砷浓度而言，可以处理超过7吨饮用水的饮用水标准。因此，我们的吸附膜可能为从水中去除砷和确保饮用水安全铺平新的道路。