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Ultrasonication aided biodiesel production from one-step and two-step transesterification of sludge derived lipid.

Zhang, Xiaolei; Yan, Song; Tyagi, Rajeshwar Dayal; Drogui, Patrick; Surampalli, Rao Y. (2016). Ultrasonication aided biodiesel production from one-step and two-step transesterification of sludge derived lipid. Energy , vol. 94 . p. 401-408. DOI: 10.1016/j.energy.2015.11.016.

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Résumé

Trichosporon oleaginosus was grown in wastewater sludge to produce lipid. The obtained biomass was employed to study ultrasonication effect on lipid extraction and in-situ transesterification. Besides the most utilized solvents (the mixture of chloroform and methanol, 1:1 v/v), other solvents including water, hexane, and methanol were also studied to explore their capacities in lipid extraction with ultrasonication. The maximum lipid recovery was 11.8, 35.3, 62.0, and 95.3% (w/w) with water, hexane, methanol, and the mixture of chloroform and methanol (1:1 v/v), respectively within 20 min. Chloroform and methanol gave the best performance. However, due to the adverse environmental concern related to the utilization of chloroform, in-situ transesterification (single step lipid extraction and transesterification to obtain biodiesel) was investigated. In case of in-situ transesterification, biodiesel yield of 95% (w/w) was obtained in 60 min with the assistance of ultrasonication; whereas, 24 h was required to achieve similar yield without ultrasonication.

Type de document:
Mots-clés libres: biodiesel; ultrasonication; lipid extraction; solvents; in-situ transesterification
Centre: Centre Eau Terre Environnement
Date de dépôt: 20 déc. 2016 16:27
Dernière modification: 20 déc. 2016 16:27
URI: http://espace.inrs.ca/id/eprint/4019

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