SEPARATION OF SOLUBLE PHENOLIC COMPOUNDS FROM OLIVE MILL WASTEWATER (OMW) USING MODIFIED SURFACTANT.

In this study the use of surfactant enhanced aquifer remediation (SEAR) technology for separating phenolic compounds from olive mill wastewater (OMW) by using modified surfactant were evaluated. New proposed modified surfactant, sodium polypropylene oxides sulfate (L167-4S), combined with cationic hydrotropes tetra butyl ammonium bromide (TBAB) in 1:1 and 1:2 molar ratios, using phenol as a model sample of the phenolic compounds in the OMW, have been used to evaluate the recovery efficiency of phenolic compounds from OMW. A model ternary phase diagram was constructed for the proposed modified surfactant. The amount of the surfactant needed to extract the phenol was determined using the three-dimensional phase behavior of the phenol, water and the proposed surfactant. The result of this study suggested that the modified surfactant L167-4S might be utilized for a preliminary exploratory investigation of an OMW treatment using a modeled sample and real samples of OMW. The result of this study shows that the recovery of phenols using a mixture of 4% L167-4S and TBAB (1:2 molar ratio) was 99.5-99.8%, and chemical oxygen demand (COD) was 99.5-99.8%.1H-NMR, and direct photometric method was used to estimate the efficiency of the surfactant in the remediation of OMW. [ABSTRACT FROM AUTHOR]