Tran-Nguyen, Phuong Lan, Go, Alchris Woo, Ismadji, Suryadi and Yi-Hsu, Ju (2015) Transesterification of activated sludge in subcritical solvent mixture. Bioresource Technology, 197. pp. 30-36. ISSN 0960-8524
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Abstract
Most previous studies reported in literature on biodiesel production from sludge were performed by acid catalyzed transesterification that required long reaction time (about 24 h) and high methanol loading. The objective of this study was to investigate the in situ transesterification of sludge in subcritical mixture of methanol and acetic acid. At 250’C and a solvent (85% methanol and 15% acetic acid) to sludge ratio of 5 (mL g-1) FAME yield of 30.11% can be achieved in 30 min, compared to the yield of 35% obtained by the acid-catalyzed (4% H2SO4) transesterification which required 24 h at 55°C and a methanol to sludge ratio of 25 (mL g1). The method developed in this study avoided using mineral acid, significantly reduced reaction time and methanol loading to achieve comparable FAME yield
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Acetic acid Activated sludge BiodieselIn situ transesterification Subcritical solvents |
| Subjects: | Engineering > Chemical Engineering |
| Divisions: | Faculty of Engineering > Chemical Engineering Study Program |
| Depositing User: | Suryadi. Ismadji |
| Date Deposited: | 13 Jul 2016 08:02 |
| Last Modified: | 19 Jul 2018 08:39 |
| URI: | http://repository.ukwms.ac.id/id/eprint/4172 |
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