High Yield Dihydroxystearic Acid (DHSA) Based on Kinetic Model from Epoxidized Palm Oil

In recent years, studies related to the epoxidation of fatty acids have garnered much interest due rising demand for eco-friendly epoxides derived from vegetable oils. From reaction, there is a side reaction involving epoxide and water. This produces by-product – dihydroxystearic acid (C<sub>18</sub>H<sub>36</sub>O<sub>4</sub>, DHSA). DHSA one chemical precursors in production cosmetic products. Therefore, kinetic model was developed determine optimised process concentration DHSA, where each reactions identified. The rate, <i>k</i> parameters obtained were: <i>k</i><sub>11</sub> = 6.6442, <i>k</i><sub>12</sub> 11.0185, <i>k</i><sub>21</sub> 0.1026 palm oleic acid, <i>k</i><sub>41</sub> 0.0021, <i>k</i><sub>51</sub> 0.0142 degradation process. minimum error simulation 0.0937. addition, yield optimisation done through Taguchi method, optimum conditions were H<sub>2</sub>O<sub>2</sub>/oleic OA unsaturation molar ratio 1 : (level 2), formic FA/OA 0.5 1), temperature 35 °C agitation speed 100 rpm 1). A high can be achieved under these conditions.