Abstract
The current study explores the aptness of natural oils like sunflower oil, sesame oil, and ricebran oil as diluents for the extraction of itaconic acid using tri octylamine as extractants in the range of 0.228––0.687 (mol/L). Utmost average distribution coefficient was obtained as 8.69 for sunflower oil, 8.52 for sesame oil, and 9.66 for rice bran oil at 0.687 mol/L of tri octyl amine. Highest itaconic acid extraction efficiency is 91.52% when ricebran oil accompanied with 0.687 mol/l of tri octylamine. Thereby, rice bran oil along with tri octylamine is the appropriate solvent system for the extraction of itaconic acid from their aqueous solution. Further, the loading ratio values ϕ < 0.5 in maximum cases suggest 1:1 complex have formed between the extractant and the itaconic acid. At Higher itaconic acid concentrations in the range of 0.150–––0.250 (mol/L) and lower tri octylamine concentrations 0.228 (mol/L), loading ratio > 0.5 was observed which indicates that 2:1 and 3:1 acid-extractant complexes are formed.
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