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Medientyp:
E-Artikel
Titel:
High Yield Dihydroxystearic Acid (DHSA) Based on Kinetic Model from Epoxidized Palm Oil
Beteiligte:
Jalil, Mohd Jumain;
Ismail, Kamariah Noor;
Hidayu, Abdul Rani;
Hassan, Mohamad Hasni;
Azmi, Intan Suhada;
Yamin, Aliff Farhan Bin Mohd;
Kamal, Khairul Azhar
Erschienen:
Croatian Society of Chemical Engineers/HDKI, 2021
Erschienen in:
Kemija u industriji, 70 (2021) 1-2, Seite 23-28
Sprache:
Nicht zu entscheiden
DOI:
10.15255/kui.2020.016
ISSN:
1334-9090;
0022-9830
Entstehung:
Anmerkungen:
Beschreibung:
In recent years, studies related to the epoxidation of fatty acids have garnered much interest due to the rising demand for eco-friendly epoxides derived from vegetable oils. From the epoxidation reaction, there is a side reaction involving epoxide and water. This reaction produces a by-product – dihydroxystearic acid (C<sub>18</sub>H<sub>36</sub>O<sub>4</sub>, DHSA). DHSA is one of the chemical precursors in the production of cosmetic products. Therefore, a kinetic model was developed to determine the optimised epoxidation process and concentration of DHSA, where each of the reactions was identified. The kinetic 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 for epoxidation palm oleic acid, and <i>k</i><sub>41</sub> = 0.0021, <i>k</i><sub>51</sub> = 0.0142 in degradation process. The minimum error of the simulation was 0.0937. In addition, DHSA yield optimisation was done through Taguchi method, and the optimum conditions obtained were H<sub>2</sub>O<sub>2</sub>/oleic acid – OA unsaturation molar ratio 1 : 1 (level 2), formic acid – FA/OA unsaturation molar ratio 0.5 : 1 (level 1), temperature 35 °C (level 1), and agitation speed 100 rpm (level 1). A high yield of DHSA can be achieved under these conditions.