کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
684513 889023 2008 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Removal of Cu2+ from aqueous solution by adsorption onto a novel activated nylon-based membrane
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تکنولوژی و شیمی فرآیندی
پیش نمایش صفحه اول مقاله
Removal of Cu2+ from aqueous solution by adsorption onto a novel activated nylon-based membrane
چکیده انگلیسی

A novel activated nylon-based membrane was prepared and applied as an adsorbent for the removal of Cu2+ from aqueous solutions. It involved three stages: (i) deposition of a chitosan layer that functionalized the nylon membrane, (ii) cross-linking with epichlorohydrin to stabilize the polymer layer and enabling grafting, and (iii) iminodiacetic acid grafting. SEM and EDX techniques were used to characterize the composition of the membranes. Dynamic adsorption experiments on membranes were carried out at various pH values, contact times, adsorption dosages and initial metal concentrations to determine optimum membrane adsorption properties. The adsorption isotherm relating to Cu2+ fitted the Langmuir equation and an adsorption equilibrium constant and adsorption capacity of 2.345 × 10−3 mg/ml and 10.794 mg/g were determined, respectively. The experimental data was analyzed using two adsorption kinetic models, pseudo-first-order and pseudo-second-order with the latter system providing the best fit. Finally complete regeneration of the activated nylon membrane was possible using 100 mmol/l Na2EDTA.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 99, Issue 17, November 2008, Pages 7954–7958
نویسندگان
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