Physicochemical property enhancement of biodiesel synthesis from hybrid feedstocks of waste cooking vegetable oil and Beauty leaf oil through optimized alkaline-catalysed transesterification

Milano, Jassinnee and Ong, Hwai Chyuan and Masjuki, Haji Hassan and Silitonga, Arridina Susan and Kusumo, Fitranto and Dharma, Surya and Sebayang, Abdi Hanra and Cheah, Mei Yee and Wang, Chin Tsan (2018) Physicochemical property enhancement of biodiesel synthesis from hybrid feedstocks of waste cooking vegetable oil and Beauty leaf oil through optimized alkaline-catalysed transesterification. Waste Management, 80. pp. 435-449. ISSN 0956-053X

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Official URL: https://doi.org/10.1016/j.wasman.2018.09.005

Abstract

Recycling waste cooking vegetable oils by reclaiming and using these oils as biodiesel feedstocks is one of the promising solutions to address global energy demands. However, producing these biodiesels poses a significant challenge because of their poor physicochemical properties due the high free fatty acid content and impurities present in the feedstock, which will reduce the biodiesel yields. Hence, this study implemented the following strategy in order to address this issue: (1) 70 vol% of waste cooking vegetable oil blended with 30 vol% of Calophyllum inophyllum oil named as WC70CI30 used to alter its properties, (2) a three-stage process (degumming, esterification, and transesterification) was conducted which reduces the free fatty acid content and presence of impurities, and (3) the transesterification process parameters (methanol/oil ratio, reaction temperature, reaction time, and catalyst concentration) were optimized using response surface methodology in order to increase the biodiesel conversion yield. The results show that the WC70CI30 biodiesel has favourable physicochemical properties, good cold flow properties, and high oxidation stability (22.4 h), which fulfil the fuel specifications stated in the ASTM D6751 and EN 14214 standards. It found that the WC70CI30 biodiesel has great potential as a diesel substitute without the need for antioxidants and pour point depressants.

Item Type: Article
Uncontrolled Keywords: Non-edible oil; Hybrid feedstock; Biofuel; Alternative energy; Oxidation stability; Fourier-transform infrared spectroscopy analysis
Subjects: T Technology > TJ Mechanical engineering and machinery
Divisions: Faculty of Engineering
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 24 May 2019 01:39
Last Modified: 24 May 2019 01:39
URI: http://eprints.um.edu.my/id/eprint/21286

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