Institutional Repository [SANDBOX]
Technical University of Crete
EN  |  EL

Search

Browse

My Space

Used-cooking-oil biodiesel: life cycle assessment and comparison with first- and third-generation biofuel

Foteinis Spyridon, Chatzisymeon Efthalia, Litinas Alexandros, Tsoutsos Theocharis

Full record


URI: http://purl.tuc.gr/dl/dias/3D1B8394-47A2-4047-AB0C-70046CE02E7F
Year 2020
Type of Item Peer-Reviewed Journal Publication
License
Details
Bibliographic Citation S. Foteinis, E. Chatzisymeon, A. Litinas, and T. Tsoutsos, “Used-cooking-oil biodiesel: Life cycle assessment and comparison with first- and third-generation biofuel,” Renew. Energy, vol. 153, pp. 588–600, Jun. 2020. doi: 10.1016/j.renene.2020.02.022 https://doi.org/10.1016/j.renene.2020.02.022
Appears in Collections

Summary

The environmental sustainability of second-generation biodiesel (used-cooking-oil) was examined, at industrial-scale, in Greece. The total carbon and environmental footprint per tonne of biodiesel production was ∼0.55t CO2eq (i.e. ∼14g CO2eq/MJ) and 58.37 Pt, respectively. This is ∼40% lower compared to first-generation biodiesel, an order of magnitude lower than the third-generation (microalgae), since the latter is not a fully-fledged technology yet. A threefold reduction in environmental impacts was observed compared to petrodiesel. Environmental hotspots include energy inputs to drive the process, followed by methanol (CH3OH) and potassium methoxide (CH3KO) consumption. Glycerol (C3H8O3) and potassium sulfate (K2SO4), both process co-products, resulted to avoided environmental burdens. Furthermore, used-cooking-oil valorisation for biodiesel production can address water pollution concerns from its disposal to the sewage system. The total distance and means of transport were found to influence the system’s environmental sustainability. Strong incentives for used-cooking-oil recycling, widespread collection systems, and biodiesel supply chain optimization are still pending in Greece, Europe, and further afield. Given its overall low environmental footprint and capability to be produced at commercial scales, the second-generation biodiesel, which currently represents 15% of the biodiesel market in Greece, could act as a stepping-stone in decarbonizing Europe’s transport sector and improving supply and energy security.

Services

Statistics