کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5210441 | 1382894 | 2012 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Removal of trace boron from aqueous solution using iminobis-(propylene glycol) modified chitosan beads
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
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چکیده انگلیسی
In this paper, a new boron chelating chitosan based polymer with multi-hydroxyl iminobis (propylene glycol) (IBPG) functions was prepared. A cross-linked chitosan (CCTS) with 2.70 mmol gâ1 amine content was modified with excess amount of glycidol at pH 7 and boron chelating resin with IBPG functions (4.60 mmol gâ1) was obtained. The boron chelating ability of the resulting resin was investigated under different experimental conditions (pH, foreign ions). This prepared material was evaluated by FT-IR spectra and UV spectra analysis. The IBPG modified CCTS resin was demonstrated to have a boron loading capacity of 2.2 ± 0.05 mmol gâ1 within 45 min. Desorption and resin regeneration studies were carried out to determine the effectiveness of the synthesized resin with HCl and NaOH respectively. The adsorption test indicated that the chitosan based chelating resin with IBPG functions exhibited higher selectivity of boron (2.05 mmol gâ1) in the presence of foreign ions especially Fe(III).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Reactive and Functional Polymers - Volume 72, Issue 10, October 2012, Pages 680-686
Journal: Reactive and Functional Polymers - Volume 72, Issue 10, October 2012, Pages 680-686
نویسندگان
Mustafa Gazi, Sayeh Shahmohammadi,