کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
585203 | 1453189 | 2006 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Biosorption of copper(II) and lead(II) from aqueous solution by chaff in a fixed-bed column
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
بهداشت و امنیت شیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Biosorption of copper(II) and lead(II) from aqueous solution by chaff in a fixed-bed column Biosorption of copper(II) and lead(II) from aqueous solution by chaff in a fixed-bed column](/preview/png/585203.png)
چکیده انگلیسی
In this article, the ability of chaff to adsorb heavy metal ions from aqueous solution was investigated in a fixed-bed column. The effect of important parameters, such as the value of pH, the flow rate, the influent concentration of solution and the effect of coexistence ions, was studied. Also the adsorption/desorption recycles of chaff were shown, and the results indicated that chaff could be recycled to remove heavy metal ions. The Thomas model was applied to adsorption of copper and lead at different flow rate and different influent concentration to predict the breakthrough curves and to determine the characteristic parameters of the column useful for process design. The model was found suitable for describing the biosorption process of the dynamic behavior of the chaff column. All the results suggested that chaff as adsorbent to removal heavy metal ions from solution prove efficient, and the rate of biosorption process is speedy. Furthermore, the efficiency of adsorption is high. When the flow rate was 3.6 ml minâ1 and the influent concentration of copper and lead was 14.82 mg lâ1 and 50.12 mg lâ1 respectively, the equilibrium adsorption biomass reached 1.98 mg gâ1 and 6.72 mg gâ1, respectively. The competitive adsorption for lead and copper was studied. Moreover the total adsorbing capability of chaff did not decrease when there were both copper(II) and lead(II) in solution.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Hazardous Materials - Volume 133, Issues 1â3, 20 May 2006, Pages 262-268
Journal: Journal of Hazardous Materials - Volume 133, Issues 1â3, 20 May 2006, Pages 262-268
نویسندگان
Runping Han, Jinghua Zhang, Weihua Zou, Huijun Xiao, Jie Shi, Hongmin Liu,