@inproceedings{a105513745c14ee1af040fe88bc2248a,
title = "Biolubricant from spent bleaching earth oil through propylene glycol ester synthesis",
abstract = "An ester type biolubricant, propylene glycol ester, has been synthesized from spent bleaching earth oil (SBEO). First, SBEO was pretreated to remove coloring materials via adsorption using activated carbon, to reduce FFA (free fatty acid) via esterification using acid catalyst, to separate glycerol via transesterification using methanol, and to produce FAME (fatty acid methyl ester) or biodiesel. The transesterification process of the treated SBEO, using methanol and KOH as base catalyst at molar ratio 1:6 (SBEO:methanol) produced FAME with 99.21% yield. Then, FAME was reacted with propylene glycol to produce propylene glycol ester (biolubricant). The transesterification process of the FAME with propylene glycol produced propylene glycol ester biolubricant with 92% yield. The biolubricant gave flash point 252 °C and pour point-7 °C. ",
keywords = "Biolubricant, Flash Point, Pour Point, Propylene Glycol Ester, Spent Bleaching Earth Oil",
author = "Sukirno and Triana, {Ade Sari} and Muhammad Rifqi",
note = "Publisher Copyright: {\textcopyright} 2020 Author(s).; 4th International Tropical Renewable Energy Conference 2019, i-TREC 2019 ; Conference date: 14-08-2019 Through 16-08-2019",
year = "2020",
month = sep,
day = "3",
doi = "10.1063/5.0014134",
language = "English",
series = "AIP Conference Proceedings",
publisher = "American Institute of Physics Inc.",
editor = "Eny Kusrini and Nugraha, {I. Gde Dharma}",
booktitle = "4th International Tropical Renewable Energy Conference, i-TREC 2019",
address = "United States",
}