SYNTHESIS AND APPLICATION ON ENRICHMENT OF METAL IONSOF CELLULOSE FIBRE GRAFTED β-CYCLODEXTRIN

WAN Junmin; HU Zhiwen; CHEN Wenxing; CHEN Haixiang; YU Zhicheng

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SYNTHESIS AND APPLICATION ON ENRICHMENT OF METAL IONSOF CELLULOSE FIBRE GRAFTED β-CYCLODEXTRIN

Research Article | 更新时间：2021-03-19

- SYNTHESIS AND APPLICATION ON ENRICHMENT OF METAL IONSOF CELLULOSE FIBRE GRAFTED β-CYCLODEXTRIN
- Acta Polymerica Sinica Issue 4, Pages: 566-572(2004)
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- Published：20 August 2004，
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WAN Junmin, HU Zhiwen, CHEN Wenxing, CHEN Haixiang, YU Zhicheng. SYNTHESIS AND APPLICATION ON ENRICHMENT OF METAL IONSOF CELLULOSE FIBRE GRAFTED β-CYCLODEXTRIN. [J]. Acta Polymerica Sinica (4):566-572(2004)
DOI：

WAN Junmin, HU Zhiwen, CHEN Wenxing, CHEN Haixiang, YU Zhicheng. SYNTHESIS AND APPLICATION ON ENRICHMENT OF METAL IONSOF CELLULOSE FIBRE GRAFTED β-CYCLODEXTRIN. [J]. Acta Polymerica Sinica (4):566-572(2004) DOI：

摘要

以环氧氯丙烷作为化学修饰剂

在碱性介质中将 β-环糊精接枝到粘胶纤维上

合成了接枝 β-环糊精的功能性纤维素纤维

接枝 β-环糊精纤维素纤维上 β-环糊精的含量为7.8%。研究了接枝 β-环糊精的纤维素纤维对模拟水样中无机重金属离子的富集性能

考察了温度、浓度、pH值对富集性能的影响 .实验结果表明

接枝 β-环糊精的纤维素纤维对无机重金属离子 (Cu2+ 、Pb2+ + 、Cd2+ )富集效果良好

其富集容量分别达到 0.25mmol/g、0.30mmol/g、0.34mmol/g

Cu2+ 、Pb2+ 、Cd2+ 与 β-环糊精富集摩尔比分别为 2.9∶1、3.9∶1、4.3∶1。

Abstract

A new kind of functional cellulose fibre grafted β-cyclodextrin (β-CD) with epichlorohydrin was synthesized in alkaline solution．The fibre not only kept the original characterization of β-CD to form inclusion complexes

but also contained more hydroxyl group(—OH) with could coordinate to inorganic heavy metal ions. The effects of factors such as temperature

concentration of solution

pH value

etc. on the enrichment properties were investigated. The results showed that the process of isothermal enrichment fits the Langmuir equation．The enrichment velocity is controlled by liquid film diffusion．The enrichment capabilitie of the fibre for inorganic heavy metal ions (Pb2+

Cu2+

Cd2+) were investigated and the enrichment contents of fiber for the above-mentioned metal ions were 0.25

0.30 and 0.34 mmol／g

respectively

the enrichment mole ratio：nCu2+／nβ-CD=2.9:1

nPb2+／nβ-CD=3.9:1

nCd2+／nβ-CD=4.3:1．

关键词

β-环糊精环氧氯丙烷功能性纤维无机重金属离子水处理

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Technical Institute of Physics and Chemistry, Chinese Academy of Sciences

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