کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
685141 889033 2008 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Real-time determination of kinetics of adsorption of lead(II) onto palm shell-based activated carbon using ion selective electrode
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تکنولوژی و شیمی فرآیندی
پیش نمایش صفحه اول مقاله
Real-time determination of kinetics of adsorption of lead(II) onto palm shell-based activated carbon using ion selective electrode
چکیده انگلیسی

In this study, the kinetics of adsorption of Pb(II) from aqueous solution onto palm shell-based activated carbon (PSAC) were investigated by employing ion selective electrode (ISE) for real-time Pb(II) and pH monitoring. Usage of ISE was very appropriate for real-time adsorption kinetics data collection as it facilitated recording of adsorption data at very specific and short time intervals as well as provided consistent kinetics data. Parameters studied were initial Pb(II) concentration and agitation speed. It was found that increases in initial Pb(II) concentration and agitation speed resulted in higher initial rate of adsorption. Pseudo first-order, pseudo second-order, Elovich, intraparticle diffusion and liquid film diffusion models were used to fit the adsorption kinetics data. It was suggested that chemisorption was the rate-controlling step for adsorption of Pb(II) onto PSAC since the adsorption kinetics data fitted both the pseudo second-order and Elovich models well.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 99, Issue 13, September 2008, Pages 5786–5792
نویسندگان
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