Sorption Mechanism of Lead Ions From Aqueous Solution By Imperata Cylindrica Dried Leaf Particle: Effect of Temperatures

Kumoro, A.C. (2012) Sorption Mechanism of Lead Ions From Aqueous Solution By Imperata Cylindrica Dried Leaf Particle: Effect of Temperatures. Prosiding Seminar Nasional Teknik Kimia “Kejuangan” 2012 Pengembangan Teknologi Kimia untuk Pengolahan Sumber Daya Alam Indonesia . ISSN 1693-4393

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Abstract

This study was conducted to investigate the sorption mechanism of Pb2+ ions from aqueous solution onto Imperata cylindrica (IC) dried leaf particles. The effect of temperatures (30, 35 and 40oC) was scrutinised from a batch adsorption system using a synthetic liquid waste containing Pb2+ ions. Adsorption of lead ions mechanism was investigated by intraparticle diffusion model. The results showed that higher adsorption rate occurred at higher temperature, and obeyed the pseudo second order adsorption model. The overall rate of lead uptake was found to be controlled by external mass transfer at the beginning of adsorption, then gradually changes to intraparticle diffusion controlled at a later stage. The intraparticle diffusion constant increased with increasing temperature. The values of effective diffusion coefficient (Di) increased at higher temperatures, which were 5.5466 × 10−9, 6.8215 × 10−9, and 7.3726 × 10−9 m2/s at 30, 35, and 40 ◦C, respectively

Item Type:Article
Uncontrolled Keywords:sorption, mechanism, Lead, Imperata cylindrica, diffusion
Subjects:T Technology > TP Chemical technology
Q Science > QD Chemistry
Divisions:Faculty of Engineering > Department of Chemical Engineering
Faculty of Engineering > Department of Chemical Engineering
ID Code:35074
Deposited By:Dr. Andri Kumoro
Deposited On:24 Apr 2012 10:07
Last Modified:16 Nov 2012 22:26

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