Optimization of operating parameters using response surface methodology for adsorption of crystal violet by activated carbon prepared from mango kernel

An adsorbent prepared from mango seed was used to study its sorption potential on removing Crystal Violet dye from aqueous solution. The influences of operating parameters like pH, temperature, initial concentration and adsorbent dosage on dye adsorption were studied. A maximum dye -1 removal of 95% was achieved with an initial concentration of 10 mg L . The percentage removal was mathematically described as a function of experimental parameters and was modeled through response surface methodology. The results show that the responses of color removal in adsorption of dyes were significantly affected by the synergistic effect of linear term of time and dosage and the 4 quadratic term of temperature and time. A 2 full factorial design of experiments was adopted and statistical analysis was performed in the form of the analysis of variance and Student s t-test, which gave good interpretation in terms of interaction of experimental parameters. The interaction of the parameters temperature, pH, dye concentration and adsorbent dosage on Crystal Violet removal is also highly significant with confidential level > 99%.