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Vol. 26 No. 2 (2014): Vol 26 Issue 2

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Utilization of Quaternized Rice Hull as Low-Cost Adsorbent for the Removal of Congo Red from Aqueous Solution

https://doi.org/10.14233/ajchem.2014.15406
Siew-Teng Ong1
1Faculty of Science, Universiti Tunku Abdul Rahman, Jln Universiti, Bandar Barat, 31900 Kampar, Perak, Malaysia 2Centre for Biodiversity Research, Universiti Tunku Abdul Rahman, Jln Universiti, Bandar Barat, 31900 Kampar, Perak, Malaysia 3Faculty of Engineering and Science, Universiti Tunku Abdul Rahman, Jln Genting Kelang, Setapak, 53300 Kuala Lumpur, Malaysia 4Department of Civil and Environmental Engineering, Cleveland State University, Cleveland, Ohio, USA *Corresponding author: Fax: +60 5 4661676; Tel: +60 5 4688888; E-mail: ongst_utar@yahoo.com; ongst@utar.edu.my
Li-Pei Hew3
1Faculty of Science, Universiti Tunku Abdul Rahman, Jln Universiti, Bandar Barat, 31900 Kampar, Perak, Malaysia 2Centre for Biodiversity Research, Universiti Tunku Abdul Rahman, Jln Universiti, Bandar Barat, 31900 Kampar, Perak, Malaysia 3Faculty of Engineering and Science, Universiti Tunku Abdul Rahman, Jln Genting Kelang, Setapak, 53300 Kuala Lumpur, Malaysia 4Department of Civil and Environmental Engineering, Cleveland State University, Cleveland, Ohio, USA *Corresponding author: Fax: +60 5 4661676; Tel: +60 5 4688888; E-mail: ongst_utar@yahoo.com; ongst@utar.edu.my
Yung-Tse Hung4
1Faculty of Science, Universiti Tunku Abdul Rahman, Jln Universiti, Bandar Barat, 31900 Kampar, Perak, Malaysia 2Centre for Biodiversity Research, Universiti Tunku Abdul Rahman, Jln Universiti, Bandar Barat, 31900 Kampar, Perak, Malaysia 3Faculty of Engineering and Science, Universiti Tunku Abdul Rahman, Jln Genting Kelang, Setapak, 53300 Kuala Lumpur, Malaysia 4Department of Civil and Environmental Engineering, Cleveland State University, Cleveland, Ohio, USA *Corresponding author: Fax: +60 5 4661676; Tel: +60 5 4688888; E-mail: ongst_utar@yahoo.com; ongst@utar.edu.my

Asian Journal of Chemistry, Vol. 26 No. 2 (2014): Vol 26 Issue 2

Abstract

In this study, the ability of quaternized rice hull to remove Congo Red from synthetic dye solution was investigated. The percentage uptake of Congo Red by quaternized rice hull was close to 50 % and this corresponds to an enhancement of 6.6 folds as compared to natural rice hull. The effect of contact time, kinetic study, sorption isotherm, agitation rate and adsorbent dosage were studied under various experimental conditions. Batch studies revealed that adsorption was depended on contact time and concentration. For Congo Red with the concentration of 50 mg/L, equilibrium was attained around 2 h whereas at higher concentration it requires a longer time. The adsorption of Congo Red onto quaternized rice hull followed pseudo-second order kinetic model with higher correlation coefficients as compared to pseudo-first order kinetic model. The maximum adsorption capacity of quaternized rice hull calculated using Langmuir model is 30.03 mg/g.

Keywords

Quaternized rice hull Congo Red Sorption Isotherm Kinetics Modelling.
Ong1, S.-T., Hew3, L.-P., & Hung4, Y.-T. (2014). Utilization of Quaternized Rice Hull as Low-Cost Adsorbent for the Removal of Congo Red from Aqueous Solution. Asian Journal of Chemistry, 26(2), 389–392. https://doi.org/10.14233/ajchem.2014.15406
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