Abstract：
:This work addresses non-catalytic biodiesel production from spent coffee ground (SCG) by integrating solvo-thermal effect of 1,2-dichloroethane (DCE) with in situ transesterification over 160 °C. The SCG water content has a positive effect on the DCE hydrolysis up to 60 wt% due to the bimolecular substitution mechanism. The hydrolysis gives an acidic environment favorable for cellulose decomposition, SCG particle size reduction and lipid conversion. The optimal fatty acid ethyl ester yield was 11.8 wt% based on the mass of dried SCG with 3.36 ml ethanol and 3.16 ml DCE at 196.8 °C through the response surface methodology. Using the solvo-thermal effect, direct utilization of wet SCG as a biodiesel feedstock provides not only economic feasibility without using drying process and additional acid catalyst but also environmental advantage of recycling the municipal waste.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Park J,Kim B,Son J,Lee JWdoi
10.1016/j.biortech.2017.10.048subject
Has Abstractpub_date
2018-02-01 00:00:00pages
494-500eissn
0960-8524issn
1873-2976pii
S0960-8524(17)31877-1journal_volume
249pub_type
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