Chem. J. Chinese Universities ›› 2010, Vol. 31 ›› Issue (1): 193.

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Adsorption Study of Gallic Acid by Hyper Cross-linked Resin Modified by Amino Function Groups

WANG Jin-Nan1,2*, XU Li1,2, LI Ai-min1,2*, ZHOU Yang1,2, XU Ling1,2   

  1. 1. State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210093, China;
    2. Research Center of Organic Toxic Substance Control and Resource reuse of Jiangsu Province, Nanjing 210038, China
  • Received:2009-03-20 Online:2010-01-10 Published:2010-01-10
  • Contact: WANG Jin-Nan. E-mail: wjnnju@163.com; LI Ai-min. E-mail: liaimin99@vip.sina.com
  • Supported by:

    国家杰出青年基金(批准号: 50825802)和国家自然科学基金(批准号: 50778088)资助.

Abstract:

As typical natural organic acid of hydrophilicity and small molecule, gallic acid(GA) serves to study the adsorption act and mechanism on a new hyper cross-linked resin modified by amino function groups. The adsorption isotherm data indicates that WJN-10 show higher adsorption force and amounts of gallic acid than that of other adsorbents. Its absorption was characterized by physical absorption. Batch kinetic studies indicate that the adsorption of GA on WJN-10 could only be fitted by intra-particle diffusion model, and the intra-particle diffusion played a dominant role in the adsorption of GA. In particular, excellent adsorption and desorption performance of WJN-10 for gallic acid was shown in dynamic column assay.

Key words: Resin modified by amino function group; Gallic acid; Adsorption

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