Hong, Seung-Ah Kim, Jaehoon Kim, Jae-Duck Kang, Jeong Won Lee, Youn-Woo 2024-01-20T19:30:39Z 2024-01-20T19:30:39Z 2021-09-05 2010-05 0149-6395 https://pubs.kist.re.kr/handle/201004/131471 Purification of waste cooking oils (palm oil and soybean oil) using supercritical carbon dioxide (scCO2) extraction has been investigated. The purified oils were characterized by their acid value, conjugated diene value, total polar compound measurements, and high-performance size exclusion chromatography. Using optimal extractions conditions of 353.15K, 20MPa, and CO2 flow rate of 40g/min, 80% of the oil was recovered and the purified oil compositions and properties were very close to those of the fresh oils. At higher pressures or lower temperatures, the separation efficiency of the scCO2 extraction was significantly reduced. English TAYLOR & FRANCIS INC PHASE-EQUILIBRIUM ETHYL-ESTERS FRYING OIL DEACIDIFICATION FRACTIONATION SEPARATION CO2 Purification of Waste Cooking Oils via Supercritical Carbon Dioxide Extraction Article 10.1080/01496391003688480 1 SEPARATION SCIENCE AND TECHNOLOGY, v.45, no.8, pp.1139 - 1146 SEPARATION SCIENCE AND TECHNOLOGY 45 8 1139 1146 scie scopus 000277728100015 2-s2.0-77952248678 Chemistry, Multidisciplinary Engineering, Chemical Chemistry Engineering Article PHASE-EQUILIBRIUM ETHYL-ESTERS FRYING OIL DEACIDIFICATION FRACTIONATION SEPARATION CO2 extraction supercritical carbon dioxide waste cooking oil