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中文摘要：
以可溶性淀粉为原料,采用反相悬浮聚合得到交联淀粉微球（Cross-linked starch microspheres CSMs）,考察其在不同介质中对Co2＋的静态吸附行为及其对不同金属离子的吸附选择性,测定了淀粉微球对Co2＋的吸附等温线,分析了其吸附的动力学特征。用红外光谱仪和X射线衍射仪对CSMs及其吸附产物的结构特征进行了对照分析,探讨了吸附机理。在实验条件下,CSMs对Co2＋的吸附模式同时符合Langmuir和Freundlich等温方程,表观吸附速率常数k308K为0.0686min-1。CSMs对Co2＋的吸附作用破坏了CSMs的结晶结构。交联淀粉微球对Co2＋具有较好的选择吸附性,吸附量受介质种类、浓度的影响。这些结果为含钴废水的处理及金属离子吸附分离提供了有益的帮助。
英文摘要：
The static adsorption behaviors and adsorption selectivity of Co 2＋ on the cross-linked starch microspheres（CSMs）synthesized from soluble starch by inverse suspension polymerization were investigated at different media and on different metal.The property of adsorption kinetics was studied.The CSMs and its adsorption product were comparatively characterized by Fourier Transform Infrared Spectroscopy（FTIR）and X-ray diffraction（XRD）,and the adsorption mechanism was also discussed.The results show that the adsorption mode of Co 2＋ on CSMs is adapted to isothermal equation of Langmiur as well as Freundlich in the experimental conditions.The adsorption rate is mainly controlled by liquid film diffusion,and the constant of adsorption rate is 0.0686min-1 at 308K.The crystal structure of the CSMs decreased greatly after the incorporation of Co 2＋.Co 2＋ has better adsorption selectivity on CSMs.The variety and concentration of media have influence on the adsorption quantity of Co 2＋.Those data are helpful for the adsorption separation of metal ions and the treatment of the wastewater containing Co 2＋.
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