Gbekeloluwa Oguntimein
8618 Wilenoak Court, Rosedale MD
21237
USA
Title: Optimization using central composite design (CCD) and the desirability function for biosorption of methylene blue from aqueous solution onto dried sunfl ower seed hull
Biography
Biography: Gbekeloluwa Oguntimein
Abstract
The objective of this work was to optimize the experimental conditions for biosorption of methylene blue dye using dried sun flower seed hull as the biosorbent. With this aim, central composite design model was applied to achieve maximum biosorption capacity q (mg/g). In the model studied, independent variables were pH (2-10), ash dosage (0.05-0.45 g/20 ml), dye concentration (0.005-0.025 mg/L), and temperature (24.5-54.5 oC). The quadratic model was developed for the predetermined responses PDR and biosorption capacity and it was clearly seen that the experimental data fi t well to model predictions statistically (R2≥0.79) and Prob>F<0.0001). Experimental conditions for maximum biosorption capacity was determined as pH 6.0, 0.0169 mg/L MB, 0.244 g DSSH dosage and 39.5 oC temperature.