Abstract: The γ-cyclodextrin immobilized starch(CS-γCD) was synthesized by introducing host functional molecule γ-Cyclodextrin into starch in the presence of epichlorohydrin.The reaction conditions were optimized by single factor experiments.The structures of the products were characterized by infrared spectrum/raman spectroscopy(IR/RAM),scanning electron microscope(SEM),X-ray diffraction(XRD).The adsorption of CS-γCD on dyes with three different structuring forms including methylene blue,methyl purple and congo red,and its decolorizing performance on simulate mixed dye waste water were studied,as well as the degradation property.The results showed that,compared with other adsorbents,CS-γCD not only had a significant improved dyestuff adsorption quantity,but also had a broader adsorbing capacity for dyes with different structures.Its decolorization rate on mixed dye waste-water was close to 90%.CS-γCD could be enzymatic degraded,while its degradation speed was much lower then native starch,showed CS-γCD had relatively higher stability and longer useful life,which could be beneficial for its popularization and application in dyestuff waste-water treatment field.
张昊, 李雅兴, 张毅, 程博闻, 周省, 牛迁迁. γ-环糊精固载淀粉的制备及其对废水中染料去除性能研究[J]. 化工新型材料, 2019, 47(6): 257-262.
Zhang Hao, Li Yaxing, Zhang Yi, Cheng Bowen, Zhou Sheng, Niu Qianqian. Preparation of CS-γCD and its removal for dye in waste-water. New Chemical Materials, 2019, 47(6): 257-262.
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