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Optimization of Photocatalytic decolourization of Red Dye in an Aqueous Suspension of Titanium Dioxide Using Response Surface Methodology

http://hdl.handle.net/20.500.12678/0000005330
e0f68b7b-e9ea-4b14-b03e-c19a034b64c9
0e356b30-b7d7-4f9d-ae81-925d8d4ef0da
Publication type
Conference paper
Upload type
Publication
Title
Title Optimization of Photocatalytic decolourization of Red Dye in an Aqueous Suspension of Titanium Dioxide Using Response Surface Methodology
Language en
Publication date 2017-11-06
Authors
Su Su Hlaing
Lat Lat Tun
Tint Tint Kywe
Description
Optimization of photocatalytic decolourization of synthetic red dye solution under artificial UV irradiation using titanium dioxide (TiO2) was studied. Box-Behnken design was employed for optimization of UV/TiO2process. Four independent variables namely initial dye concentration, pH, photocatalyst dosage and UV irradiation time was chosen as processvariables. According to ANOVA, it was observed thatthe initial dye concentrationand pH was statistically the most significant for decolourization efficiency response, with confidence level of 99.99%, followed by the UV irradiation time (97.54%). It has also been observed that the highest interaction (99.81%) occurred between the initial dye concentrationand pH.Optimization resultshowed that maximum decolourization of dye solution (96%) was achieved at the optimum conditions: initial dye concentration 50 mg/L, pH 3, photocatalyst dosage 1 g/L and irradiation time 180 min. Predicted values of decolourization efficiency were found to be in good agreement with experimental values (R2= 0.9557and Adj-R2= 0.9323).These results indicatethat the optimization based on the Box-Behnkendesign can effort by the estimation of the optimum conditions for the maximum decolourization efficiency.
Keywords
decolourization, dye solution, catalyst, uv irradiatio, response surface methodology
Conference papers
2017-11-06
10th Regional Conference on Chemical Engineering (Sustaining Chemical Engineering Ingenuity and Breakthroughs Towards a Successful ASEAN Integration)
Hotel Benilde Maison de la Salle, Manila, Philippines
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