华南理工大学学报(自然科学版) ›› 2003, Vol. 31 ›› Issue (9): 53-56.

• 化学化工 • 上一篇    下一篇

偕胺肟基纤维对Ni 2+的吸附动力学

陶庭先1 吴之传1 孙志娟2    

  1. 1.安徽工程科技学院 生化工程系‚安徽 芜湖241000;2.华南理工大学 化工学院‚广东 广州510640
  • 出版日期:2003-09-20 发布日期:2022-05-20
  • 作者简介:陶庭先 (1963-)‚男‚硕士‚副教授‚主要从事 高分子材料改性及应用的研究.
  • 基金资助:
    安徽省教委自然科学基金资助项目(2002kj066)

Kinetics of Adsorption of Nickel (Ⅱ) Ion on Fibre Containing Amidoxime Groups

Tao Ting-xian 1 Wu Zh-i chuan 1 Sun Zh-i juan 2    

  1. 1.Dept.of Biochemical Engineering‚Anhui University of Technology and Science‚Wuhu241000‚China; 2.College of Chemical Engineering‚South China Univ.of Tech.‚Guangzhou510640‚China
  • Online:2003-09-20 Published:2022-05-20

摘要: 以偕胺肟基纤维(AOCF)为吸附材料‚对不同初始浓度的 Ni 2+溶液进行吸附规律 研究.结果显示‚室温下 AOCF 对 Ni 2+的吸附符合 Freundlich 等温吸附经验式.由不同初 始浓度下吸附时间与溶液浓度的关系‚用微分法确定反应的级数;在不同温度下对初始浓 度为0.033mol·L -1的 Ni 2+溶液进行吸附‚确定各温度下的反应速率常数‚由速率常数与 温度的关系‚结合 Arrhenius 方程可得出反应的活化能.研究结果表明‚偕胺肟基纤维对水 溶液中的 Ni 2+吸附反应符合一级反应动力学特征;其速率方程 c=c0e -kt‚速率常数 k= 0.1716×e -Ea/RT‚活化能 Ea=13.52kJ/mol. 

关键词: 偕胺肟基纤维, 二价镍离子, 吸附, 动力学

Abstract: The adsorption of Ni 2+ on the fibre containing amidoxime groups in different initial concentration Ni 2+ aqueous solution is studied‚and it was found that the bonding between Ni 2+ and amidoxime groups was in accordance with the Freundlich isotherm.The reaction order was determined by infinitesimal calculus‚based on the relationship between the adsorption time and the concentration of Ni 2+.To determine reaction rate constants( k)‚the adsorption of Ni 2+ of 0.033mol·L -1(initial concentration) on fibre containing amidoxime groups was also studied at different temperature.According to the correlation of k with the temperature and Arrhenius equation‚the activation energy was obtained.The results indicate that the adsorption kinetics accorded with the character of the first order reaction: with the reaction rate equation being c=c0e -kt‚the equation of reaction rate constant k=0.1716e -Ea/RT‚and the activation energy Ea=13.52kJ/mol. 

Key words:  , fibre containing amidoxime groups;Nickel(Ⅱ)ion;adsorption;kinetic

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