Microwave-assisted esterification and transesterification of dairy scum oil for biodiesel production: kinetics and optimisation studies

In the present study, a lab-scale microwave reactor was used to conduct the esterification and transesterification of dairy scum oil (DSO). The optimum parameters for acid-catalysed esterification were microwave power-600 W, molar ratio of methanol to FFA-30:1, temperature of reaction-60°C, concentr...

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Bibliographic Details
Published in:	Indian chemical engineer (Calcutta, India : 1997) Vol. 63; no. 4; pp. 374 - 386
Main Authors:	Binnal, P., Amruth, A., Basawaraj, M. P., Chethan, T. S., Murthy, K. R. S., Rajashekhara, S.
Format:	Journal Article
Language:	English
Published:	New Delhi Taylor & Francis 08-08-2021 Taylor & Francis Ltd
Subjects:	biodiesel Biodiesel fuels Dairy scum oil Esterification Kinetics Methanol microwave reactor Optimization Parameters Reaction time Scum Sulfuric acid Transesterification
Online Access:	Get full text
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Summary:	In the present study, a lab-scale microwave reactor was used to conduct the esterification and transesterification of dairy scum oil (DSO). The optimum parameters for acid-catalysed esterification were microwave power-600 W, molar ratio of methanol to FFA-30:1, temperature of reaction-60°C, concentration of sulphuric acid-8 wt%, while the optimum parameters for transesterification were temperature- 60°C, microwave power - 600 W, molar ratio of methanol to DSO- 7:1, concentration of KOH - 1 wt%. Experiments conducted under optimum conditions in the microwave reactor revealed that the highest conversion of FFA was 93.63% (reaction time - 16 min), while the highest yield of FAMEs in transesterification was 93.47% (reaction time - 5 min). Kinetic studies conducted in the microwave reactor demonstrated that esterification and transesterification followed pseudo-first-order kinetics.
ISSN:	0019-4506 0975-007X
DOI:	10.1080/00194506.2020.1748124