Optimization of Coagulation Process for Disperse Navy Blue Dye Wastewater Treatment Using Response Surface Methodology

Abstract:

A response surface methodology (RSM) was used for the determination of optimum coagulation process conditions for disperse navy blue dye wastewater treatment. The experimental design was Box-Behnken design (BBD) with three operational variables: coagulant dosage, pH value and settling time. The influence of these three independent variables on the chroma removal was evaluated using a second-order polynomial multiple regression model. Quadratic model was predicted for the response variable and the maximum model-predicted chroma removal efficiency was 95%. Based on surface and contour plots, the optimum conditions were obtained to be coagulant dosage of 70.98 mg/L, pH value of 7.46, and settling time of 15.80 min with the actual chroma removal efficiency as 93%.

• Periodical: Advanced Materials Research (Volume 977)
• Pages: 270-273
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.977.270
• Online since: June 2014
• Authors: Ming Li, Yan Zhen Yu*, Guang Yong Yan
• Keywords: Box-Behnken Design (BBD), Disperse Navy Blue Dye Wastewater Treatment, Response Surface Methodology (RSM)

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