Please use this identifier to cite or link to this item: https://dspace.ctu.edu.vn/jspui/handle/123456789/4497
Title: Transesterification of activated sludge in subcritical solvent mixture
Authors: Trần, Nguyễn Phương Lan
Ju, Yi-Hsu
Ismadji, Suryadi
Go, Alchris Woo
Keywords: Acetic acid
Activated sludge
Biodiesel
In situ transesterification
Subcritical solvents
Issue Date: 2015
Series/Report no.: Bioresource Technology;197 .- p.30-36
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), a 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 g−1). The method developed in this study avoided using mineral acid, significantly reduced reaction time and methanol loading to achieve comparable FAME yield.
URI: http://dspace.ctu.edu.vn/jspui/handle/123456789/4497
Appears in Collections:Tạp chí quốc tế

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