This work developed and applied a CuO-impregnated bauxite hollow fibre membrane (BHFM) using hydrothermal method for bisphenol A (BPA) photodegradation. BHFM was synthesized through a phase inversion method at optimum sintering at 1300 °C. Subsequently, the physico-chemical properties of CuO-coated BHFM were characterized, while its performance for the BPA degradation was investigated at varying time of hydrothermal exposure and compared to ceramic hollow fibre membrane from alumina (AHFM) as control and commercial membranes. Oxidation by-products, resulting from BPA photodegradation, were identified and after treatment, the saturated membrane was regenerated to sustain its cost-effectiveness. As compared to the pristine BHFM membrane, we found that functionalizating BHFM surface with CuO significantly improved its mechanical strength by 130 % from 18.5 to 42.5 MPa. The removal of BPA was enhanced with the increasing hydrothermal time to 5 h due to the even distribution of CuO-impregnated BHMF on its membrane surface. 97 % of BPA removal with 10 mg/L concentration was substantially attained by the same CuO-impregnated BHFM under visible light (VIS) irradiation. Treated effluents, resulting from the BPA photocatalysis, could meet the required effluent limit of 20 mg/L set by national legislation. The possible oxidation by-products cover 4-(2-hydroxy-2-propanol)phenol, 4-isopropylphenol and dihydroxybenzene. With 25 % of efficiency, the saturated CuO-impregnated BHMF was subsequently regenerated for consecutive five cycles. This implies that functionalizing BHMF surface with CuO enabled it to possess outstanding stability and removal performance for treatment of BPA-laden wastewater.

本工作利用水热法开发并应用了一种 CuO 浸渍的铝土矿中空纤维膜 (BHFM)，用于双酚 A (BPA) 的光降解。BHFM 是通过相转化法在 1300 °C 的最佳烧结温度下合成的。随后，表征了 CuO 涂层 BHFM 的物理化学性质，同时在不同的水热暴露时间研究了其对 BPA 降解的性能，并与作为对照的氧化铝陶瓷中空纤维膜 (AHFM) 和商业膜进行了比较。鉴定出由 BPA 光降解产生的氧化副产物，并在处理后对饱和膜进行再生以维持其成本效益。与原始的 BHFM 膜相比，我们发现用 CuO 对 BHFM 表面进行功能化后，其机械强度从 18.5 MPa 提高到 42.5 MPa，显着提高了 130%。由于 CuO 浸渍的 BHMF 在其膜表面上的均匀分布，BPA 的去除随着水热时间增加到 5 小时而增强。在可见光 (VIS) 照射下，相同的 CuO 浸渍 BHFM 基本上实现了 10 mg/L 浓度的 97% 的 BPA 去除。由 BPA 光催化产生的经过处理的废水可以满足国家立法规定的 20 mg/L 的废水限值要求。可能的氧化副产物包括 4-(2-羟基-2-丙醇)苯酚、4-异丙基苯酚和二羟基苯。以 25% 的效率，饱和的 CuO 浸渍的 BHMF 随后连续五个循环再生。