کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
641836 1457015 2013 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Mixed matrix membranes for efficient adsorption of copper ions from aqueous solutions
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
Mixed matrix membranes for efficient adsorption of copper ions from aqueous solutions
چکیده انگلیسی

This work presents adsorption of copper (Cu2+) ions from aqueous solutions using mixed matrix membrane (MMM) and its elution afterwards. The developed flat sheet MMM, comprises of chitosan beads incorporated in Ethylene vinyl alcohol (EVAL) polymer porous matrix and exhibits static Cu2+ ion adsorption capacity of 410.5 mg Cu2+ ions per g chitosan bead, which is higher than earlier studies reported on chitosan as adsorbent (beads, membranes and hydrogel). Dynamic adsorption of Cu2+ ions from aqueous solution with MMM is similar to static adsorption but it is achieved much faster (15 min versus 60 min). Attempts to desorb Cu2+ ions from chitosan beads in packed bed column resulted in bead aggregation, restriction of Cu2+ ion desorption and reusability of the column. Under similar experimental conditions, Cu2+ ions desorbed successfully from the MMM without loss of beads from the membrane structure and the MMM was reusable. Overall, the MMM developed in this study shows superiority over packed bed columns in terms of low pressure drop, high adsorption capacity, successful desorption of Cu2+ ions and reusability for few cycles.


► Development of mixed matrix membranes (MMM) containing chitosan bead (20–40 μm).
► High copper ion adsorption from aqueous solution to MMM is demonstrated.
► Adsorption capacity of MMM is higher than existing chitosan based adsorbents.
► Overall performance of MMM is superior than packed bed column.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Separation and Purification Technology - Volume 104, 5 February 2013, Pages 214–220
نویسندگان
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