Removal of organic micro-pollutants from water by -cyclodextrin triazine polymers

beta-Cyclodextrin (CD) polymers were synthesized by nucleophilic substitutions between -CD with cyanuric chloride. Insoluble polymers were obtained. Polymers were characterized by DSC, TGA, FTIR, SS-(CNMR)-C-13. Polymers and activated carbon (AC-Darco) were used to remove model micro-pollutants of bisphenol-A (BPA), 2-naphthol, 2-cholor-biphenyl (PCBNO1), benzene and dibutyl phthalate from water. The results showed that -CD-triazine polymers showed better performance to adsorb BPA compared with activated carbon; -CD-triazine polymer showed similar performance to activated carbon on removing benzene from water; however, it showed worse performance for removing 2-naphthol, PCBNO1 and dibutylphthalate by comparison with activated carbon. -CD-triazine polymers with varying ratio of -CD to cyanuric chloride were synthesized and their performance on model micro-pollutants were evaluated. Removal efficiency of micro-pollutants from water for -CD-triazine polymers correlated with their CD concentration except for removing benzene which showed similar performance.