Isothenn and Kinetics of Fe(II) Adsorption onto Chitosan in a Batch Process
Publish place: Iranica Journal of Energy and Environment، Vol: 2، Issue: 3
Publish Year: 1390
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_IJEE-2-3_009
تاریخ نمایه سازی: 1 اردیبهشت 1393
Abstract:
In this study removal of Fe(II) by chitosan adsorbent was experimentally investigated in a batch system. The adsorbent dose and pH of the metal solution was fixed at 0.15 g and 4, respectively. Adsorptionexperiments were carried out at initial concentration range of 10-50 mg l-1 at 20°C. Equilibrium studies showedthat experimental data were well fitted to Langmuir-Freundlich isothe1m model. Linear and non-linear forms of pseudo-first-order and pseudo-second-order kinetic models were employed to describe the kinetic adsorption processes. The model parameters were confidently recovered. The kinetics followed the non-linear form ofpseudo-first-order model which represents adsorption of Fe(II) on chitosan takes place through a physical process. The examination of kinetic data also revealed that the adsorption rate was dominated by intra-particle diffusion mechanism
Keywords:
Chitosan · Intraparticle diffusion · Iron removal · Isotherm models · Pseudo-first-order · Pseudo-second-order
Authors
Hamideh Radnia
Department of Chemical Engineering Babol Noshirvani University of Technology, Babol, Iran
ali asghar ghoreyshi
Department of Chemical Engineering Babol Noshirvani University of Technology, Babol, Iran
habibollah younesi
Department of Environmental Science,Faculty of Natural Resources and Marine Science, Tarbiat Modares University, No or, Iran