Rapid conversion of fat, oil and grease (FOG) into biodiesel without pre-treatment of FOG

Title
Rapid conversion of fat, oil and grease (FOG) into biodiesel without pre-treatment of FOG
Authors
박찬혁이제찬정종민전병훈Chi-Hwa Wang이상룡권일한
Keywords
Fat, oil and grease (FOG); Waste management; Biodiesel; Waste-to-energy; Simultaneous esterification; transesterification
Issue Date
2017-12
Publisher
Journal of cleaner production
Citation
VOL 168-1216
Abstract
In this study, the conversion of fat, oil and grease (FOG) into fatty acid methyl esters (FAMEs) without pre-treatment of FOG is investigated. A thermally induced process to accomplish simultaneous esterification of free fatty acids (FFAs) and transesterification of lipids is introduced. Despite high contents of impurities in FOG (∼14 wt%), the maximum achievable yield of FAMEs on feedstock mass basis was >86% for 10 s reaction time without removal of impurities prior to the reaction while conventional acid catalyzed reaction only produced <27.7% FAMEs from FOG. This means that the introduced technique can be effective for the conversion of low-quality raw material (e.g., FOG) into biodiesel. This study would suggest the potential not only for developing a sustainable integrated treatment process of FOG requiring no separation of lipids and FFAs in wastewater treatment facilities but also for using FOG as a renewable energy resource.
URI
http://pubs.kist.re.kr/handle/201004/66251
ISSN
0959-6526
Appears in Collections:
KIST Publication > Article
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