Extraction of Naphthalene from an Organic Phase with the Mixture DMSO-methanol-phenol in Batch Mode. Application of a Composite Centered Design (CCD)

The aim of this study was to improve the extraction efficiency of naphthalene from an organic phase (fuel oil) which had given already an extraction yield of about 79% using the mixture phenol-methanol as extractant. To perform this yield several extractions of naphthalene using binary and tertiary mixtures of products were proceeded. It was found that after an optimization by a mixture design, the DMSO-methanol-phenol composition used to extract naphthalene was efficiency.To study the extraction phenomena of naphthalene with the extractant mixture, a second degree experimental design called composite centered design had been used. In this paper an extraction of naphthalene from an organic phase (fuel oil) using the mixture DMSO-methanol-phenol was carried out by varying the temperature, the ratio R (Fuel/Mixture) and the initial concentration of naphthalene. After analysis of variance ANOVA, effects of parameters were studied and a model correspondent to the extraction according parameters was then applied. The optimization of these parameters showed that the extraction yield of naphthalene was almost perfect yielding 98.88%.