工业水处理 ›› 2012, Vol. 32 ›› Issue (9): 24-28. doi: 10.11894/1005-829x.2014.32(09)24

• 试验研究 • 上一篇    下一篇

活性炭纤维对水中酸性染料的吸附研究

龚正君, 周文波, 陈钰   

  1. 西南交通大学地球科学与环境工程学院, 四川成都 610031
  • 收稿日期:2012-07-10 出版日期:2012-09-20 发布日期:2012-09-20
  • 作者简介:龚正君(1976-),副教授,博士。E-mail:gongzhengjun@126.com
  • 基金资助:

    中央高校基本科研业务费专项资金资助(SWJTU12CX020)

Study on the adsorption of acidic dyes in water with activated carbon fiber

Gong Zhengjun, Zhou Wenbo, Chen Yu   

  1. Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu 610031, China
  • Received:2012-07-10 Online:2012-09-20 Published:2012-09-20

摘要:

采用ZnCl2活化稻草秸秆炭化得到的活性炭纤维吸附酸性品红,考察了投加量、pH、吸附时间、初始浓度及温度对吸附性能的影响,并对等温吸附特征、吸附热力学和动力学进行系统研究.结果表明:投加量为0.1 g,pH=1时,活性炭纤维对酸性品红具有很好的吸附效果,吸附在8 h后达到平衡.该吸附过程符合Langmuir及Freundlich等温吸附模型和准二级动力学方程,其反应的吉布斯自由能ΔG<0,为自发反应.

关键词: 酸性品红, 活性炭纤维, 等温吸附

Abstract:

The activated carbon fiber has been obtained from straw stalk carbon with ZnCl2 as adsorbent for removing acid fuchsin. The influences of dosage,pH,adsorption time,initial concentration and reaction temperature are investigated, and the characteristic of isotherm adsorption,adsorbing thermodynamics and dynamics are studied systematically. The results show that when the dosage is 0.1 g,and pH=1,the adsorbing effect of activated carbon fiber on acid fuchsin is optimum. After 8 h,the adsorption reaches equilibrium. The adsorption process agrees with the Langmuir and Freundlich isotherms adsorption models and the quasi-secondary kinetics equation. The reacted Gibbs free energy ΔG<0 is a spontaneous reaction.

Key words: acid fuchsin, activated carbon fiber, isothermal adsorption

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