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首页> 外文期刊>BioTechnology: An Indian Journal >Multiamine modified chitosan for removal metal ions from their aqueous solution
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Multiamine modified chitosan for removal metal ions from their aqueous solution

机译：多胺改性壳聚糖用于去除水溶液中的金属离子

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Chitosan was chemically modified with glycidylmethacrylate and ethylenediamine or diethylenetriaminein a two-step reaction. Firstly, opening of the three-ring of glycidylmethacrylate, leaving a double a bond for further reaction. Finally, produced product was reacted through the free glycidylmethacrylate double bond with ethylenediamine or diethylenetriamine. The chemicallymodified chitosan were characterized by elemental analysis, IR, 13C-NMR, XRD, SEMand employed for barium, manganese, cobalt, nickel, copper, zinc and cadmiumbiosorption. Elemental analysis data based on nitrogen atom content gave an incorporation oforganic pendant groups to the modified chitosan. 13C-NMR and FT-IR results are in agreement with the success of the proposed chemical modification. The metal sorption capability of the final chelating material was higher than chitosandue to the increment of basic centers attached to the pendant chains. The experimental data were adjusted toLangmuir, Freundlich and Temkin sorption isothermmodels. The behavior suggested that this new modified biopolymer could be employed as a promising sorbent for cation removal from polluted dye bath.
机译：用甲基丙烯酸缩水甘油酯和乙二胺或二亚乙基三胺对壳聚糖进行了两步反应化学修饰。首先，打开甲基丙烯酸缩水甘油酯的三环，留下双键以进一步反应。最后，使产物通过游离的甲基丙烯酸缩水甘油酯双键与乙二胺或二亚乙基三胺反应。化学修饰的壳聚糖通过元素分析，IR，13C-NMR，XRD，SEM进行表征，并用于钡，锰，钴，镍，铜，锌和镉的生物吸附。基于氮原子含量的元素分析数据给出了有机侧基与改性壳聚糖的结合。 13 C-NMR和FT-IR结果与所提出的化学修饰的成功相符。最终螯合材料的金属吸附能力高于壳聚糖，这是因为连接在侧链上的碱性中心的增加。将实验数据调整为Langmuir，Freundlich和Temkin吸附等温线模型。该行为表明，这种新的改性生物聚合物可以用作从污染的染浴中去除阳离子的有前途的吸附剂。

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