天然高分子吸附剂研究Ⅱ．镍离子模板壳聚糖树脂的合成及特性

STUDIES OF NATURAL NACROMOLECULAR ADSORBENTS Ⅱ.SYNTHESIS AND CHARACTERIZAllON OF CHITOSAN RESIN AND Ni(Ⅱ)AS TEMPLATE

以镍离子为模板剂，合成了乙醇双环氧丙基醚交联的壳聚糖树脂，研究了其对Ｃｕ（Ⅱ）、Ｎｉ（Ⅱ）、Ｃｏ（Ⅱ）离子的吸附性能。结果表明，该法合成的树脂对Ｎｉ（Ⅱ）离子具有较强的“记忆”和“识别”能力，其对Ｃｕ（Ⅱ）、Ｎｉ（Ⅱ）、Ｃｏ（Ⅱ）的吸附量分别达２．２１、２．１３、１．４０ｍｍｏｌ／ｇ树脂。

Using Ni2+ as template,some novel adsorption resins, which have higher adsorption capacities for metallic ions,were synthesized by reacting chitosan with the crosslinking agent ethylene glycol bisglycidyl ether (EGBE),and their static adsorption capacity, kinetic, and isotherm for Ni2+ were investigated. The results showed the template adsorbents have good capacities of″memory and discernment″for the template ion-Ni2+.The adsorption capacities of template resins for Cu2+,Ni2+,Co2+ were 2.21,2.13 and 1.40 mmol/g resin respectively. The template resins were 5.61 and 2.06 times as many as the nontemplate ones in adsorption capacities for Ni2+,Co2+. The above mentioned resins have wide use in treating industral waste water which contains heavy metallic ions.