这项工作报告了醋酸纤维素 (CA) 聚合物从废香烟过滤嘴中回收和随后转化为半透膜的过程。回收过程包括逐步溶剂洗涤以从烟熏过滤器中去除有机物和其他粘附的杂质，然后进行溶解、过滤和再沉淀。对回收的聚合物进行彻底的表征，并与市售的和未吸食的香烟过滤嘴衍生的 CA 进行比较，以确定聚合物在经受烟雾和加热后的纯度和物理化学性质的变化。使用所有三种类型的 CA 通过浸没沉淀技术制造膜，系统表征（ATR-FTIR、SEM、接触角、zeta 电位）并测试染料/盐分离。优化后的膜对各种染料显示出高截留率，< 一价和二价盐的拒绝率为 15%。此外，使用实际工业废水进行的长期测试（150 小时）显示出稳定的性能，具有出色的通量回收率和持久的有机物去除率。

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This work reports the recovery and subsequent conversion of cellulose acetate (CA) polymer from waste cigarette filters into semi-permeable membranes. The recycling process comprised of step-wise solvent washing to remove the organics and other adhering impurities from the smoked filter, followed by dissolution, filtration and reprecipitation. The recovered polymer was thoroughly characterized and compared with the commercial and unsmoked cigarette filter derived CA to determine the purity and changes in polymer's physicochemical properties after subjection to smoke and heat. Membranes were fabricated using all three types of CA by immersion precipitation technique, systematically characterized (ATR-FTIR, SEM, contact angle, zeta potential) and tested for dye/salt separation. Optimized membranes showed high rejection for various dyes with