华南理工大学学报(自然科学版) ›› 2011, Vol. 39 ›› Issue (1): 74-78.doi: 10.3969/j.issn.1000-565X.2011.01.014

• 环境科学与技术 • 上一篇    下一篇

交联壳聚糖的制备及对聚半乳糖醛酸的吸附

刘凯 何北海 黎小敏 赵光磊   

  1. 华南理工大学制浆造纸工程国家重点实验室,广东广州510640
  • 收稿日期:2010-05-24 修回日期:2010-08-27 出版日期:2011-01-25 发布日期:2010-12-01
  • 通信作者: 赵光磊(1975一),男,博士,讲师,主要从事造纸化学品、制浆造纸过程水生物处理技术应用等研究 E-mail:glzhao@scut.edu.cn
  • 作者简介:刘凯(1982一),男,博士生,主要从事纸浆流送与纸页成形研究
  • 基金资助:

    国家自然科学基金资助项目(20776054);教育部高等学校博士点基金新教师课题(200805611104);制浆造纸国家重点实验室开放基金资助项目(200932);华南理工大学中央高校基本业务费重点资助项目(2009ZZ0020)

Preparation of Modified Chitosan Microsphere and Its Adsorption Behavior for Poly-galacturonic Acid

Liu Kai He Bei-hai Li Xiao-min Zhao Guang-lei   

  1. South China university of technology of the pulp and paper engineering state key laboratory, guangdong guangzhou 51064
  • Received:2010-05-24 Revised:2010-08-27 Online:2011-01-25 Published:2010-12-01
  • Contact: 赵光磊(1975一),男,博士,讲师,主要从事造纸化学品、制浆造纸过程水生物处理技术应用等研究 E-mail:glzhao@scut.edu.cn
  • About author:刘凯(1982一),男,博士生,主要从事纸浆流送与纸页成形研究
  • Supported by:

    国家自然科学基金资助项目(20776054);教育部高等学校博士点基金新教师课题(200805611104);制浆造纸国家重点实验室开放基金资助项目(200932);华南理工大学中央高校基本业务费重点资助项目(2009ZZ0020)

摘要: 为了有效去除造纸白水中的阴离子垃圾,提高造纸白水的回用性。本文首先制备了壳聚糖微球,并利用戊二醛进行改性,对壳聚糖微球及其改性物吸附聚半乳糖醛酸的初步条件进行了研究比较。结果表明戊二醛与壳聚糖微球的交联反应很好地符合准二级动力学过程及Freundlich吸附等温方程。随着聚半乳糖醛酸溶液pH值的增大,壳聚糖微球及其改性物对聚半乳糖醛酸的吸附量先逐渐减小后增大,但在同一pH值下,改性壳聚糖微球的吸附量比壳聚糖微球的大。另外,随着氯化钠浓度的逐渐增加,壳聚糖微球及其改性物对聚半乳糖醛酸的吸附量迅速降低,但在同一氯化钠浓度下,改性壳聚糖微球的吸附量比壳聚糖微球的稍大。

关键词: 壳聚糖, 戊二醛, 聚半乳糖醛酸, 吸附

Abstract:

In order to remove anionic trash in whitewater effectively to improve the recycling of paper-making whitewater. In this paper, chitosan microsphere was prepared, and modified with glutaraldehyde, then the adsorption of chitosan microsphere and its modifier for poly-galacturonic acid were studied. The results showed that the cross-linking of chitosan microsphere and glutaraldehyde followed the pseudo-second-order equation and Freundlich equation. As the pH of poly-galacturonic acid solution increased, the adsorption quantity of chitosan microsphere and its modifier for poly-galacturonic acid gradually decreased first and then increased, but at the same pH, the adsorption quantity of modified chitosan microsphere for poly-galacturonic acid was larger than that of chitosan microsphere. In addition, with the gradual increase in concentration of sodium chloride, the adsorption quantity of chitosan microsphere and its modifier for poly-galacturonic acid rapidly decreased, but at the same concentration of sodium chloride, the adsorption quantity of modified chitosan microsphere for poly-galacturonic acid was slightly larger than that of chitosan microsphere.

Key words: chitosan, glutaraldehyde, poly-galacturonic acid, adsorption