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首页> 外文期刊>Separation and Purification Technology >Adsorption properties of N-succinyl-chitosan and cross-linked N-succinyl-chitosan resin with Pb(II) as template ions
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Adsorption properties of N-succinyl-chitosan and cross-linked N-succinyl-chitosan resin with Pb(II) as template ions

机译：以Pb（II）为模板离子的N-琥珀酰-壳聚糖和交联的N-琥珀酰-壳聚糖树脂的吸附性能

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摘要

In the current study,we attempt to find a new adsorbent material based on chitosan,so a series of N-succinyl-chitosan (NSC) with different degree of substitution (DS) were prepared,and then the adsorption properties of them as adsorbent were examined.The effects of DS of NSC,pH value in original solution and adsorption temperature on adsorption capacities for Pb(II) ions were investigated,and the cross-linked A'-succinyl-chitosan resin with Pb(II) as template ion (CNSC) was synthesized by NSC adsorbed Pb(II) ions cross-linked with glutaraldehyde and then removing Pb(II) ions from the resin.In the study of the single metal ions adsorption and the co-adsorption experiments of mixture solutions,it was found that the adsorption capacities of CNSC for Pb(II) ions were always higher than that of the NSC.The CNSC has a good reusability and better adsorption capacities after reuse for 10 times.FT-IR and XPS revealed that the Pb(II) adsorption on the CNSC and NSC mainly involved the carboxyl groups,and partly occur on the amino groups in the adsorption process.
机译：在本研究中，我们试图寻找一种基于壳聚糖的新型吸附材料，因此制备了一系列具有不同取代度的N-琥珀酰-壳聚糖（NSC），然后将它们作为吸附剂进行了吸附。研究了NSC的DS，原始溶液的pH值和吸附温度对Pb（II）离子吸附能力的影响，并以Pb（II）为模板离子交联了A'-琥珀酰-壳聚糖树脂（通过NSC吸附戊二醛交联的Pb（II）离子，然后从树脂中去除Pb（II）离子来合成CNSC）。在单金属离子吸附和混合溶液共吸附实验的研究中，发现CNSC对Pb（II）离子的吸附能力始终高于NSC，CNSC具有良好的可重复使用性，重复使用10次后具有更好的吸附能力.FT-IR和XPS揭示了Pb（II）在CNSC和NSC上的吸附主要涉及羧基gr渗出，部分发生在吸附过程中的氨基上。

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