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Techno-economic analysis of processes for biodiesel production with integrated co-production of higher added value products from glycerol

Lookup NU author(s): Luma Al-Saadi, Dr Valentine Eze, Professor Adam Harvey

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This is the authors' accepted manuscript of an article that has been published in its final definitive form by Taylor and Francis Ltd., 2020.

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Abstract

© 2020, © 2020 Informa UK Limited, trading as Taylor & Francis Group.A techno-economic analysis was conducted to compare 3 different processes for biodiesel production: (i) the conventional base-catalysed process (NaOH) (ii) a reactive coupling process to form glycerol carbonate (GLC) as a co-product in situ (iii) a reactive coupling to form solketal as a co-product in situ. The processes were simulated at rapeseed oil feed of 100,000 t/y. The capital investment and energy consumption of biodiesel production with associated GLC formation were found to be lower than that for the conventional process. The GLC process required $7.63 M capital investment and 2.2 MW per annum. The conventional process required $8.75 M capital investment and 5.4 MW per annum. Solketal production, however, was more capital-intensive, with $12.87 M capital investment and 25.8 MW. The 20-year net present values (NPVs) for the three biodiesel processes were: $65 M for the conventional alkali-biodiesel process, $128 M for solketal co-production and $631 M for GLC co-production. Clearly, the conversion of glycerol into higher added value species in situ can significantly increase the profitability of biodiesel production, particularly for glycerol carbonate formation.


Publication metadata

Author(s): Al-Saadi LS, Eze VC, Harvey AP

Publication type: Article

Publication status: Published

Journal: Biofuels

Year: 2020

Pages: epub ahead of print

Online publication date: 19/05/2020

Acceptance date: 06/05/2020

Date deposited: 14/07/2020

ISSN (print): 1759-7269

ISSN (electronic): 1759-7277

Publisher: Taylor and Francis Ltd.

URL: https://doi.org/10.1080/17597269.2020.1767495

DOI: 10.1080/17597269.2020.1767495


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