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Application of response surface analysis for optimization of dyes sorption onto EDTA modified rice hull

Ong, Siew-Teng and Lee, Weng-Nam and Keng, Pei-Sin and Lee, Siew Ling and Hung, Yung-Tse and Ha, Sie-Tiong (2011) Application of response surface analysis for optimization of dyes sorption onto EDTA modified rice hull. Research Journal Of Chemistry And Environment, 15 (2). pp. 538-543. ISSN 0972-0626

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Abstract

The batch removal of basic and reactive dyes from aqueous solution using ethylenediamine tetraacetic acid modified rice husk (ERH) was studied. Plackett-Burman design coupled with response surface methodology (11SM) were adopted to evaluate the effect of various operating parameters, such aspH (2-10), contact time (5-420 mins) andsorbent dosage (0.05-0.2 g) on the percentage of dye removal. The optimum adsorption conditions for Methylene Blue were determined as pH: 8.6, contact time: 131 mins and sorbent dosage: 0.13 g. As for Reactive Orange 16, a greater uptake was observed at a lower pH. The empirical model developed from the interactive effects of important operating variables was validated using ANOVA analysis. The percentage uptakes predicted by the model are in good agreement with the experimental values, thus confirming the reliabilily of the models.

Item Type:Article
Uncontrolled Keywords:adsorption, basic dyes, optimization, plackett-burman design, reactive dyes, response surface methodology (RSM)
Subjects:Q Science
Divisions:Science
ID Code:28862
Deposited By: Liza Porijo
Deposited On:29 Nov 2012 08:11
Last Modified:29 Nov 2012 08:11

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