Preparation of Sulfurized Poly(m-aminothiophenol)/Starch Composite Material and Its Adsorption of Hg(Ⅱ)

Huang-long ZHUANG; Lian-jun CAO; Lan-lan DAI; He-li YIN; Ji-wei WANG; Aikebaier REHEMAN

doi:10.14028/j.cnki.1003-3726.2022.03.007

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Preparation of Sulfurized Poly(m-aminothiophenol)/Starch Composite Material and Its Adsorption of Hg(Ⅱ)

更新时间：2022-09-09

- Preparation of Sulfurized Poly(m-aminothiophenol)/Starch Composite Material and Its Adsorption of Hg(Ⅱ)
- Polymer Bulletin Vol. 35, Issue 3, Pages: 54-62(2022)
- 作者机构：
  
  1.宁德师范学院毒物化学重点实验室,宁德 352100
  2.宁德师范学院闽东畲医药福建省高校工程研究中心,宁德 352100
- 作者简介：
- 基金信息：
- DOI：10.14028/j.cnki.1003-3726.2022.03.007
  CLC：
- Published：20 March 2022，
  
  Received：09 March 2021，
  
  Revised：15 August 2021，
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Huang-long ZHUANG, Lian-jun CAO, Lan-lan DAI, He-li YIN, Ji-wei WANG, Aikebaier REHEMAN. Preparation of Sulfurized Poly(m-aminothiophenol)/Starch Composite Material and Its Adsorption of Hg(Ⅱ). [J]. Polymer Bulletin 35(3):54-62(2022)
DOI：

Huang-long ZHUANG, Lian-jun CAO, Lan-lan DAI, He-li YIN, Ji-wei WANG, Aikebaier REHEMAN. Preparation of Sulfurized Poly(m-aminothiophenol)/Starch Composite Material and Its Adsorption of Hg(Ⅱ). [J]. Polymer Bulletin 35(3):54-62(2022) DOI： 10.14028/j.cnki.1003-3726.2022.03.007.

摘要

本文以可再生马铃薯淀粉(PS)为原料

通过巯基偶联剂修饰

获得巯基功能化淀粉(PS-SH);然后

间氨基苯硫酚在过硫酸铵作为引发剂的作用下发生聚合反应

得到聚间氨基苯硫酚(PMAT);接着

以单质硫为交联剂

获得硫化聚间氨基苯硫酚/淀粉复合物(PS-S-PMAT)

最后对材料的化学组成、结构、形貌进行表征同时探究了各种变量对汞离子的吸附性能的影响。研究发现

在常温下

当pH值为4

初始浓度为100mg/L

吸附时间为360min时

材料的吸附量和去除率分别为226.29mg/g和90.52%。通过对实验数据进行拟合和分析

汞离子去除过程遵循准二级动力学模型和Langmuir模型

该材料对Hg(Ⅱ)的最大理论吸附容量是387.60mg/g。干扰离子和吸附剂再生实验表明:干扰离子并没有明显影响材料对汞离子的吸附

同时

材料经过五次吸附-脱吸附循环后

吸附量仍然为200.73mg/g

说明材料具有较好再生和重复使用的性能。

Abstract

In this work

the renewable potato starch (PS) was used as a raw material and modified by sulfhydryl coupling agent to obtain sulfhydryl functionalized starch (PS-SH)

then

the polymerization reaction of m-aminothiophenol occurred under the action of ammonium persulfate as an initiator to obtain poly(m-aminothiophenol) (PMAT)

subsequently

elemental sulfur was used as a cross-linking agent to obtain a sulfurized poly(m-aminothiophenol)/starch complex (PS-S-PMAT)

finally

the chemical composition

structure and morphology of the material were characterized

and the influence of various variables on the adsorption performance of PS-S-PMAT toward Hg(Ⅱ) ions was explored. The study found the adsorption capacity and removal rate of the material were 226.29mg/g and 90.52% at pH 4 with initial concentration of 100mg/L and 360min of adsorption time. By fitting and analyzing the adsorption data

the adsorption process followed the second-order kinetic model and Langmuir model. The maximum theoretical adsorption capacity of this material for Hg(Ⅱ) was 387.60mg/g. Interfering ions and adsorbent regeneration experiments showed that the interfering ions did not significantly affect the adsorption of Hg(Ⅱ) ions

meanwhile

the adsorption capacity of the material was still 200.73mg/g after five adsorption-desorption cycles

which indicated that the material was selective and reusable performance.

关键词

淀粉聚间氨基苯硫酚硫磺吸附Hg(Ⅱ)

Keywords

StarchPoly(m-aminothiophenol)Elemental sulfurAdsorptionHg(Ⅱ)

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