کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
227952 464831 2016 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Arsenic removal from aqueous solutions by adsorption onto hydrous iron oxide-impregnated alginate beads
ترجمه فارسی عنوان
حذف آرسنیک از محلول های آبی با جذب بر روی آلژینات آغشته به اکسید آهن آبی
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی


• Hydrous iron oxide-impregnated alginate beads were prepared for arsenic removal.
• As(III) and As(V) adsorption capacity of this beads was high enough to remove arsenic.
• Chemisorption and intra-particle diffusion mainly governed adsorption for As(III) and As(V), respectively.
• The beads could be regenerated using NaOH solution and reused for multiple cycles.

Hydrous iron oxide impregnated alginate beads were developed for effective arsenic removal from water. As(III) adsorption was maximized at neutral pH while As(V) adsorption was higher in acidic conditions. Adsorption efficiency for both As(III) and As(V) mostly increased with increasing iron loading, but As(V) adsorption slightly decreased at high iron loading. Phosphate showed a pronounced interfering effect, especially at high concentration. Kinetics data fitted to pseudo-second-order and intra-particle diffusion model suggested chemisorption and intra-particle diffusion might mainly govern As(III) and As(V) adsorption, respectively. Beads were regenerated using NaOH solution and successfully reused for multiple cycles.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Industrial and Engineering Chemistry - Volume 35, 25 March 2016, Pages 277–286
نویسندگان
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