Characterization of new material made by rice husks ash and β-cyclodextrin polymer and its property of endocrine-disruptors removal from aqueous solution

摘要

Complexes composed of rice husks ash (RHA) and β-cyclodextrin (CyD) polymer (CRP)was synthesized as endocrine-disruptors (EDs) removal. TG-DTA, IR, and SEM analyzed the chemical and physical properties of CRP. The CD polymer (CP), which has intricate surface and cavities inside, were made effectively in the presence of RHA. RHA itself was changed to be a porous silicic acid during formation of CRPs. The CP perfectly was decomposed when CP washeated up to 530°C. The complex shows high removal ability with high selectivity for Bisphenol A and Dibenzofuran from aqueous solution. Removal rate of Bisphenol A by CRP was decreased with increasing of decomposition of CRP. The CRP was completely decomposed at 600°C.Removal rate of Dibenzofuran by RHA was increased as increased a porous structure of RHA.CP mainly removes Bisphenol A, and Dibenzofuran is done by cooperation with CP and RHA units.