No abstract

The present work was carried out to study the extraction of volatile acids like acetic and propionic with tri-n-butyl phosphate (as extractant) dissolved in laboratory-modified nontoxic diluent. A graphical method was used to calculate the values of Dimerization coefficient (D) and partition coefficient (P) from distribution coefficient (K D) data of both volatile acids. The extraction equilibrium constants(K E(1:1)) and loading factors (Z) for both volatile acids were also determined. Based on the values of Z it can be concluded that there is a formation of 1:1 complexes between Tri Butyl Phosphate and Volatile acids.

The present work was done to check the ability of three laboratory-modified nontoxic diluents (made from sunflower, rice bran, & Sesame oil) for the extraction of fumaric acid (dicarboxylic acid) with Tri-n-octyl amine as an extractant. Physical extraction studies with fumaric acid showed that the three modified diluents are incapable of extracting fumaric acid The most effective Tri-n-Octylamine (TOA) extractant was dissolved in the three modified diluents (made from sunflower, rice bran, Sesame oil). Extraction efficiency increased with the increase in the percentage (V/V) of Tri-n-Octylamine (TOA) indicating a prominent role of the extractant. The extraction efficiency of 30% Tri-n-Octylamine (TOA) inall the 3 modified oils (diluent) is nearly 90%. The effect of higher percentages of Tri-n-Octylamine (TOA) extractant on extraction efficiency was also studied but the marginal increase in the extraction efficiency was found for all the three laboratory-modified oils.