کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
584331 | 877888 | 2007 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Chelating adsorption properties of PEI/SiO2 for plumbum ion
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
بهداشت و امنیت شیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
In this paper, a novel adsorption material PEI/SiO2 with strong adsorption ability towards heavy-metal ions was prepared. In preparation of PEI/SiO2, functional macromolecule polyethyleneimine (PEI) was grafted onto the surfaces of silica gel particles via the coupling effect of γ-chloropropyl trimethoxysilane (CP). The adsorption properties of PEI/SiO2 for Pb2+ ion were studied by both static and dynamic methods. The experimental results show that PEI/SiO2 possesses very strong adsorption ability for Pb2+ ion, the saturated adsorption amount could reach to 17.5 mg gâ1, and the empirical Langmuir isotherm was found to describe well the equilibrium adsorption data. The pH and grafting amount of PEI have great influence on the adsorption amount. The Pb2+ ions adsorbed on PEI/SiO2 are eluted easily by diluted hydrochloric acid solution.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Hazardous Materials - Volume 145, Issue 3, 16 July 2007, Pages 495-500
Journal: Journal of Hazardous Materials - Volume 145, Issue 3, 16 July 2007, Pages 495-500
نویسندگان
Fuqiang An, Baojiao Gao,