کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
580987 | 1453155 | 2010 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Novel negatively charged hybrids. 3. Removal of Pb2+ from aqueous solution using zwitterionic hybrid polymers as adsorbent
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
بهداشت و امنیت شیمی
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چکیده انگلیسی
Using zwitterionic hybrid polymers as adsorbent, the adsorption kinetics and isotherm, thermodynamic parameters of ÎG, ÎH and ÎS for the removal of Pb2+ from aqueous solution were investigated. It is indicated that the adsorption of Pb2+ ions on these zwitterionic hybrid polymers followed the Lagergren second-order kinetic model and Freundlich isotherm model, demonstrating that the adsorption process might be Langmuir monolayer adsorption. The negative values of ÎG and the positive values of ÎH evidence that Pb2+ adsorption on these zwitterionic hybrid polymers is spontaneous and endothermic process in nature. Moreover, the zwitterionic hybrid polymers produced reveal relatively higher desorption efficiency in 2 mol dmâ3 aqueous HNO3 solution, indicating that they can be recycled in industrial processes. These findings suggest that these zwitterionic hybrid polymers are the promising adsorbents for Pb2+ removal and can be potentially applied in the separation and recovery of Pb2+ ions from the waste chemicals and contaminated water of lead-acid rechargeable battery.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Hazardous Materials - Volume 173, Issues 1â3, 15 January 2010, Pages 438-444
Journal: Journal of Hazardous Materials - Volume 173, Issues 1â3, 15 January 2010, Pages 438-444
نویسندگان
Junsheng Liu, Yue Ma, Yaping Zhang, Guoquan Shao,