การศึกษาความเป็นไปได้ของการใช้ประโยชน์ดินฟอกสีที่ผ่านการใช้งานแล้ว

Abstract

A study on the value-added of used activated bleaching earth (UABE), collected from the New Biodiesel industrial refining plant. The study on the extraction of lipids and pro-vitamin A by supercritical carbon dioxide technique, two step biodiesel production and regenerated in the bleaching of crude palm oil. This used activated bleaching earth showed oil content of 23.96±1.33 %, free fatty acid of 23.47±0.99 % and Saponification Value 198.21±0.48 mg KOH/g. Extraction of lipids and carotene content or pro-vitamin A by supercritical carbon dioxide technique at a temperature of 35 °C and a pressure of 250 bar with methanol as a co-solvent was found that 29.36±0.99 % of oil, the carotene content 85.74±0.16 mg/kg and beta-carotene 9.57 mg/kg. A two-step biodiesel production. In the esterification reaction, the free fatty acid content can be less than 2% and the transesterification, the fatty acid ethyl ester content of 97.62%, based on the Department of Energy Business or European Standard EN 14214:2003 the FAME conversion was lower than 96.50% was achieved under the conditions (step 1: methanol to FFA molar ratio 15:1 with 1 % H2SO4 catalyzed with co-solvent 10% dichlorobenzene and 5% molecular sieve at temperature 70 °C by microwave technique for 30 minutes and second step transesterification methanol to oil molar ratio 6:1 catalyzed with 1% potassium hydroxide). And regenerated the used activated bleaching earth after extraction with hexane solvent extraction, activated by sulfuric acid, the bleaching efficiency of crude palm oil is not different from activated bleaching earth.