胶团强化超滤处理水中环境激素双酚A研究

REMOVAL OF BISPHENOL A IN WATER BY MICELLE ENHANCED ULTRAFILTRATION TECHNOLOGY

采用聚砜超滤膜和再生纤维素超滤膜,以十六烷基氯化吡啶(CPC)为表面活性剂,进行了胶团强化超滤处理水中双酚A(BPA)的研究,考察了操作压力、不同材质和截留相对分子质量的超滤膜、CPC浓度、溶液pH、电解质、非离子表面活性剂烷基多糖苷(APG)复配等因素对工艺的影响。结果表明,截留相对分子质量(MWCO)为5×103的聚砜UF膜和阳离子表面活性剂CPC,MEUF处理水中的BPA,在操作压力为0.15 MPa、CPC的浓度为5 mmol.L-1条件下,对BPA的截留率可达90%以上,BPA的截留率及渗透液中CPC浓度随pH的变化而变化,电解质的存在以及CPC与APG的复配可以提高BPA的截留率,降低透渗透液中CPC的浓度。

Micellar-enhanced ulrafiltration（MEUF） was used to treat bisphenol A from aqueous solution with polysulfone membrane and regenerated cellulose membrane. Heaadccylpyridinium chloride （CPC） was applied as StLrfactant. The effects of some important parameters were investigated, including trans-membrane pressure, different materials and weight cut offs （MWCOs） membranes, the concentration ofCPC, solution pH and the concentration of feed electrolyte, the mixture of CPC and an nonionic surfactant Alkyl poly-glycosides （APG）. The results showed that MELT had great effect on the rejection of bisphcnol A can reach to 90%, by using polysulfone membrane of 5 × 10^3 weight cut off （MWCO）, at pressure of 0.15 MPa, CPC influcnt concenWation of 5 mmol · L^-1. The rejection of BPA and the permeate concanwation of CPC were affected by the pH of the solution. The existence of electrolyte and the mixture of CPC and APG can increase the rejection ofbisphcnol A and decrease the permeate concentration of CPC.