Journal of Petrochemical Universities

Journal of Petrochemical Universities ›› 2008, Vol. 21 ›› Issue (2): 48-52.

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Interactions Between LAS and Aniline Adsorptions on Riverbed Sediments

WU Yao-guo, HU Si-hai LIU Bao-chao, TAN Ying
  

  1. (Department of Applied Chemistry,Northwestern Polytechnical University,Xi'an Shaanxi 710072,P.R.China)
  • Received:2007-08-31 Published:2008-06-20 Online:2017-06-28

LAS与苯胺在河床沉积物上吸附的相互影响

吴耀国, 胡思海, 刘保超, 谭 英   

  1. (西北工业大学应用化学系,陕西西安710072)
  • 作者简介:吴耀国(1967-),男,河南潢川县,教授,博士
  • 基金资助:
    国家自然科学基金项目(No.40472127)。

Abstract:

Batch equilibration experiment was conducted out to study the adsorptions of aniline and LAS and their interactions on Weihe riverbed sediments. The results show that, LAS inhibits to the absorption of aniline on the sediments, and so as to the inhibition of aniline on LAS adsorption on the sediments, because they compete with each other for adsorption sites on the sediments. The inhibitions are gotten increasing with rising in their concentrations, the adsorption models of LAS and aniline on the sediments are hardly affected by each other, however, varied with the changes in pH. The adsorption model of aniline obeys Henry equation under pH 5, and follows Freundlich or Langmuir equation under pH 7 or 9 respectively. The affect of aniline on the adsorption of LAS depends mainly on LAS concentration, and gets more distinct with increasing in the concentration. 

摘要: 采集渭河河床沉积物,利用平衡振荡实验方法,研究了十二烷基苯磺酸钠(LAS)和苯胺共存时在沉积物上的吸附特征及交互影响规律。结果表明,LAS与苯胺在沉积物上的吸附都以表面吸附作用为主,因争夺吸附点位而产生吸附竞争,无论是LAS或苯胺的质量浓度升高,都导致沉积物对苯胺或LAS吸附量的减少,但均不会影响其吸附模式。苯胺在沉积物上吸附模式的主要影响因素是pH,pH 为5时苯胺为沉积物吸附,以Henry模型模拟最优;pH 为7或9时则分别以Freundlich方程或Langmuir方程拟合最佳。苯胺对沉积物吸附LAS的影响程度受LAS自身质量浓度的影响最大;LAS质量浓度越大,苯胺对沉积物吸附LAS的影响越明显。

关键词: 十二烷基苯磺酸钠(LAS), 苯胺, 吸附, 沉积物

Cite this article

WU Yao-guo, HU Si-hai, LIU Bao-chao, TAN Ying .

Interactions Between LAS and Aniline Adsorptions on Riverbed Sediments
[J]. Journal of Petrochemical Universities, 2008, 21(2): 48-52.

吴耀国, 胡思海, 刘保超, 谭 英. LAS与苯胺在河床沉积物上吸附的相互影响[J]. 石油化工高等学校学报, 2008, 21(2): 48-52.

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