Characteristics of boron adsorption onto a novel chitosan/zirconium composite particles

WANG Xiong; LIU Mingyan

doi:10.11949/j.issn.0438-1157.20170634

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Characteristics of boron adsorption onto a novel chitosan/zirconium composite particles

更新时间：2025-12-10

- Characteristics of boron adsorption onto a novel chitosan/zirconium composite particles
- CIESC Journal Issue 2, Pages: 848-857(2018)
- 作者机构：
  
  1. 天津大学化工学院, 天津化学化工协同创新中心,天津,300350
  2. 化学工程联合国家重点实验室(天津大学),天津,300350
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20170634
  CLC： Q128+.54
- Online First：05 February 2018，
  
  Published：05 February 2018
- 稿件说明：
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WANG Xiong, LIU Mingyan. Characteristics of boron adsorption onto a novel chitosan/zirconium composite particles[J]. CIESC Journal, 2018, (2): 848-857.
DOI：

WANG Xiong, LIU Mingyan. Characteristics of boron adsorption onto a novel chitosan/zirconium composite particles[J]. CIESC Journal, 2018, (2): 848-857. DOI： 10.11949/j.issn.0438-1157.20170634.

摘要

通过氧氯化锆与壳聚糖的配位反应以及Zr （OH）4在壳聚糖内的原位沉淀，制备了一种新型壳聚糖-锆复合球（CTS-Zr）并用于硼的吸附分离。采用扫描电子显微镜（SEM）和傅里叶红外光谱（FTIR）对CTS-Zr进行了表征，系统考察了溶液pH、硼初始浓度、接触时间、温度及共存阴离子Cl-、NO3-和SO42-对CTS-Zr吸附性能的影响。结果表明：pH=2～7时，CTS-Zr对硼的吸附效率较高；吸附平衡行为符合Langmuir等温吸附模型；pH=7时，最大吸附量计算值为21.1 mg·g-1；吸附动力学符合准二级动力学模型；常见的共存阴离子对硼的吸附影响很小；吸附热力学研究表明，CTS-Zr对硼的吸附过程为放热的非自发过程；使用pH=12的NaOH水溶液，对吸附剂CTS-Zr进行了洗脱，洗脱效率为96.3%，且经过3次吸附-解吸循环后，CTS-Zr的吸附效率没有明显降低。

Abstract

A new type of chitosan-zirconium composite particles (CTS-Zr) has been prepared through coordination reaction between zirconium oxychloride and chitosan

and in-situ precipitation of zirconium hydroxide for the adsorption of boron from solution. The CTS-Zr composite was characterized by scanning electron microscope (SEM) and Fourier transform infrared spectroscopy (FTIR). The effects of pH

initial boron concentration

contact time

temperature and co-existing ions Cl-

NO3-

and SO42- on adsorption performance were also investigated systematically. The results demonstrated that prepared adsorbent could maintain high boron adsorption efficiency in a pH range from 2 to 7. The equilibrium adsorption behavior of boron on the CTS-Zr composite had a good agreement with the Langmuir isotherm model

and the maximum adsorption capacity was calculated as 21.1 mg·g-1 with pH of 7. The uptake kinetics was fitted well with the pseudo-second order rate equation

and the common coexisting anions almost had no negative effect on the boron adsorption. The results of adsorption thermodynamics of boron on CTS-Zr indicate the exothermic and not spontaneous nature of the adsorption process. The boron adsorbed on CTS-Zr particles was regenerated with an efficiency of 96.3% using NaOH solution of pH of 12

and the adsorption efficiency was not significantly reduced after three adsorption-desorption cycles.

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