کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
221581 464260 2016 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Development of a bio-based sorbent media for the removal of nickel ions from aqueous solutions
ترجمه فارسی عنوان
توسعه یک رسانه جاذب مبتنی بر زیست محیطی برای حذف یونهای نیکل از محلول های آبی
کلمات کلیدی
پایداری آب؛ حذف فلزات سنگین؛ sorbent بر اساس زیستی؛ نانوسایل الکتریکی کیتوزان؛ جذب نیکل
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی


• A low cost bio-based sorbent media was synthesized using chitosan.
• The media was used for the removal of nickel ions from aqueous solutions.
• Adsorption kinetics follow a pseudo-second order model.
• Langmuir isotherm best fitted adsorption data.
• Adsorption of nickel on nanofibers is spontaneous with an endothermic nature.

The objective of this study is to develop a low cost bio-based sorbent for the removal of nickel ions from aqueous solutions. Chitosan/Polyethylene oxide (Cs/PEO) nanofibers were prepared by electrospinning technique and characterized. Batch adsorption experiments were then carried out to investigate the effect of contact time and Cs/PEO mass ratio on adsorption efficiency of nickel ions. Results indicate that a maximum nickel adsorption (qm) of 227.27 mg/g was achieved at 75 °C. Pseudo-first order, pseudo-second order, and intraparticle diffusion kinetic models were used to fit kinetic adsorption data. Batch adsorption equilibrium tests were also carried out at different temperatures. Langmuir, Freundlich, Redlich-Peterson and Dubinin-Radushkevich models were fitted to experimental data. It was found that the pseudo-second order and the Langmuir models provided a high degree of correlation (R2 > 0.99) with experimental data. Adsorption was then assumed to be a spontaneous endothermic chemical process.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Environmental Chemical Engineering - Volume 4, Issue 3, September 2016, Pages 3159–3169
نویسندگان
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