Wet in situ transesterification of spent coffee grounds with supercritical methanol for the production of biodiesel

This work introduces biodiesel production from wet spent coffee grounds (SCGs) with supercritical methanol without any pre-drying process. Supercritical methanol and subcritical water effectively produced biodiesel via in situ transesterification by inducing more porous SCG and enhancing the efficiency of lipid extraction and conversion. It was also found that space loading was one of the critical factors for biodiesel production. An optimal biodiesel yield of 10.17 wt% of dry SCG mass (86.33 w/w% of esterifiable lipids in SCG) was obtained at reaction conditions of 270 degrees C, 90 bars, methanol to wet SCG ratio 5:1, space loading 58.4 ml/g and reaction time 20 min. Direct use of wet SCG waste as feedstock for supercritical biodiesel production eliminates the conventional dying process and the need of catalyst and also reduces environmental problems caused by landfill accumulation.
Publisher
ELSEVIER SCI LTD
Issue Date
2018-07
Language
English
Article Type
Article; Proceedings Paper
Keywords

CURCAS L. SEEDS; MICROALGAE; EXTRACTION; REACTANT

Citation

BIORESOURCE TECHNOLOGY, v.259, pp.465 - 468

ISSN
0960-8524
DOI
10.1016/j.biortech.2018.03.067
URI
http://hdl.handle.net/10203/241558
Appears in Collection
CBE-Journal Papers(저널논문)
Files in This Item
There are no files associated with this item.
  • Hit : 44
  • Download : 0
  • Cited 0 times in thomson ci
This item is cited by other documents in WoS
⊙ Detail Information in WoSⓡClick to seewebofscience_button

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0