Utilization Of Response Surface Methodology In The Sorption OF CRUDE OIL BY WASTE POLYPROPYLENE PLASTICS

Abstract

In this study, waste propylene plastics (WPP) were used as sorbents for the removal of crude oil. The reactions were described by the use of central composite design as the function of factors namely; sorbent dosage, contact time, initial oil concentration and temperature. Results revealed that the best experimental run for the crude oil sorption was obtained at conditions of high sorbent dosage of 3.5 g, high contact time of 30 mins, high initial oil concentration of 75 g/L and low temperature of 25 oC which produced a maximum sorption capacity of 17.23 g/g. Relative effects of interaction between the process variables from the interaction plot and cube plot showed significant interaction between the factors. Statistical analysis revealed that the model of the WPP sorbents had high R2 value of 0.9824, high AP value of 32.14 and low CV value of 1.47, indicating a very good precision and reliabilty of the model.