کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
679259 1459938 2016 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Design of a new integrated chitosan-PAMAM dendrimer biosorbent for heavy metals removing and study of its adsorption kinetics and thermodynamics
ترجمه فارسی عنوان
طراحی کاتالیزور جدید یکپارچه کیتوزان-پامام دندریمر برای حذف فلزات سنگین و مطالعه سینتیک جذب و ترمودینامیک آن
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تکنولوژی و شیمی فرآیندی
چکیده انگلیسی
In this research, different generations of PAMAM-grafted chitosan as integrated biosorbents were successfully synthesized via step by step divergent growth approach of dendrimer. The synthesized products were utilized as adsorbents for heavy metals (Pb2+ in this study) removing from aqueous solution and their reactive Pb2+ removal potential was evaluated. The results showed that as-synthesized products with higher generations of dendrimer, have more adsorption capacity compared to products with lower generations of dendrimer and sole chitosan. Adsorption capacity of as-prepared product with generation 3 of dendrimer is 18 times more than sole chitosan. Thermodynamic and kinetic studies were performed for understanding equilibrium data of the uptake capacity and kinetic rate uptake, respectively. Thermodynamic and kinetic studies showed that Langmuir isotherm model and pseudo second order kinetic model are more compatible for describing equilibrium data of the uptake capacity and kinetic rate of the Pb2+ uptake, respectively.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 205, April 2016, Pages 230-238
نویسندگان
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