针对废水中氟喹诺酮类抗生素盐酸环丙沙星（HCIP）的污染，以离子液体和二甲基亚砜（DMSO）共混溶液为溶剂，通过相反转技术制备了氧化石墨烯-纤维素复合膜（GOCE）和磁性氧化石墨烯-纤维素复合膜（FGCE）以除去HCIP。同时研究了氧化石墨烯质量分数、纳米Fe₃O₄质量分数、HCIP浓度、溶液温度、溶液pH、共存阴阳离子、水质以及再生次数等因素对复合膜吸附HCIP性能的影响。结果表明，氧化石墨烯和磁性纳米Fe₃O₄质量分数（相对于微晶纤维素质量）分别为5.0%和4.0%的复合膜FGCE对50 mg/L的HCIP溶液的平衡吸附量可达21.67 mg/g。当HCIP溶液质量浓度为10 mg/L时，其吸附率为91.97%。

Aiming at treating with the pollution of ciprofloxacin hydrochloride in wastewater,graphene oxide-cellulose composite membrane (GOCE) and magnetic graphene oxide-cellulose composite membrane (FGCE) are prepared separately by phase inversion technique with a mixing solution of ionic liquid and dimethyl sulfoxide as solvent,which are used to remove ciprofloxacin hydrochloride.The effects of graphene oxide content,nano-Fe₃O₄ content,ciprofloxacin hydrochloride concentration,solution temperature,solution pH,coexisting anion and cation,water quality and regenerative times on the adsorption performance of composite membrane to ciprofloxacin hydrochloride are studied.The results show that the composite membrane FGCE that contains 5.0 wt% of graphene oxide and 4.0 wt% of magnetic nano-Fe₃O₄ (relative to the mass of microcrystalline cellulose) shows an equilibrium ciprofloxacin hydrochloride adsorption capacity of 21.67 mg/g when the initial concentration of ciprofloxacin hydrochloride is 50 mg·L^-1,the temperature is set at 25℃ and solution pH is 6.7.The adsorption rate can reach 91.97% when the initial concentration of ciprofloxacin hydrochloride is 10 mg·L^-1.

刘欣然(1993-),女,硕士研究生,研究方向为膜分离,1130173243@qq.com