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Production of biodiesel from waste shark liver oil for biofuel applications

Lookup NU author(s): Ahmed Al HatrooshiORCiD, Dr Valentine Eze, Professor Adam Harvey



This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND).


© 2019 Elsevier LtdBiodiesel is a renewable alternative to “petro-diesel”. There is an established conventional production technology based on refined vegetable oils. However, this is always more expensive than petroleum-based diesel, mainly due to the feedstock cost, and the biodiesel market is based on subsidies. Use of a cheap non-edible feedstock, such as waste shark liver oil (WSLO), would reduce the biodiesel production cost and make the process more economically viable. In this study, production of fatty acid methyl ester (FAME) from WSLO using both acid (H2SO4) and base (NaOH) catalysts were investigated using a Design of Experiments approach (response surface methodology). Due to the high levels of FFA (free fatty acids) homogeneous alkali-catalysed transesterification of WSLO was less effective than the acid-catalysed process, resulting in WSLO to FAME conversion of 12% after 60 min, with maximum FAME conversion of about 40% after 15 min. Acid-catalysed WSLO transesterification achieved 99% FAME conversion at 10.3 M ratio of methanol to WSLO, 6.5 h reaction time, 60 °C temperature, and 5.9 wt % of H2SO4 catalyst.

Publication metadata

Author(s): Al Hatrooshi AS, Eze VC, Harvey AP

Publication type: Article

Publication status: Published

Journal: Renewable Energy

Year: 2020

Volume: 145

Pages: 99-105

Print publication date: 01/01/2020

Online publication date: 05/06/2019

Acceptance date: 01/06/2019

Date deposited: 05/08/2019

ISSN (print): 0960-1481

ISSN (electronic): 1879-0682

Publisher: Elsevier Ltd


DOI: 10.1016/j.renene.2019.06.002


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