钍在PAN/沸石复合吸附剂上的吸附行为研究。
Study of the behaviour of thorium adsorption on PAN/zeolite composite adsorbent.
作者信息
Kaygun A Kilincarslan, Akyil S
机构信息
Ege University, Institute of Nuclear Sciences, 35100 Bornova, Izmir, Turkey.
出版信息
J Hazard Mater. 2007 Aug 17;147(1-2):357-62. doi: 10.1016/j.jhazmat.2007.01.020. Epub 2007 Jan 12.
The adsorption behaviour of thorium from aqueous solutions by a composite adsorbent has been investigated by a batch technique. The thorium adsorption on composite adsorbent was studied as a function of initial concentration, pH, shaking time and temperature. The sorption of thorium at the determined optimum conditions follows Langmuir, Freundlich and D-R type isotherms. Langmuir constants Q=0.04 mmol g(-1) and b=64.94 L mol(-1) and of D-R parameter Xm = 0.04, beta=0.79 and of sorption energy E=0.80 and Freundlich constants 1/n=3.12 and cm = 0.012 mmol g(-1) were evaluated. Thermodynamic parameters such as DeltaH and DeltaS were found to be 37.32 kJ mol(-1) and 206.17 J mol(-1)K(-1), respectively.
采用分批技术研究了复合吸附剂从水溶液中吸附钍的行为。研究了钍在复合吸附剂上的吸附与初始浓度、pH值、振荡时间和温度的关系。在确定的最佳条件下钍的吸附遵循朗缪尔、弗伦德利希和D-R型等温线。评估了朗缪尔常数Q = 0.04 mmol g(-1)和b = 64.94 L mol(-1)，D-R参数Xm = 0.04、β = 0.79和吸附能E = 0.80，以及弗伦德利希常数1/n = 3.12和cm = 0.012 mmol g(-1)。发现热力学参数如ΔH和ΔS分别为37.32 kJ mol(-1)和206.17 J mol(-1)K(-1)。
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