Deakin University
Browse

File(s) under permanent embargo

Using switchable solvent as a solvent and catalyst for in situ transesterification of spent coffee grounds for biodiesel synthesis

journal contribution
posted on 2019-01-01, 00:00 authored by Hoang Chinh NguyenHoang Chinh Nguyen, M L Nguyen, F M Wang, S H Liang, T L Bui, H H Ha, C H Su
This study developed a novel in situ transesterification process by combining the solvent and catalyst functions of 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) for biodiesel synthesis from spent coffee grounds (SCG). The influence of reaction parameters on the reaction was investigated. The maximum biodiesel yield of 96.13% was observed at DBU-to-SCG and methanol-to-SCG ratios of 20 and 10 mL/g, respectively; a reaction temperature of 130 °C; and a reaction time of 60 min. Notably, the polarity of DBU could be reversibly regulated, thus facilitating excellent product separation. Moreover, DBU could be effectively reused for 10 cycles to yield high biodiesel conversion. DBU-catalyzed in situ transesterification of SCG is a promising, ecofriendly, and economically viable biodiesel production process.

History

Journal

Bioresource Technology

Volume

289

Article number

121770

Pagination

1 - 4

Publisher

Elsevier

Location

Amsterdam, The Netherlands

ISSN

0960-8524

eISSN

1873-2976

Language

eng

Publication classification

C1.1 Refereed article in a scholarly journal