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Biodiesel production from waste cooking oil: An efficient technique to convert waste into biodiesel

Sahar, Sadaf, Sana, Iqbal, Javed, Ullah, Inam, Bhatti, Haq Nawaz, Nouren, Shazia, Habib-ur-Rehman, Nisar, Jan, Iqbal, Munawar·2018·Sustainable Cities and Society

Abstract

Abstract Biodiesel production from waste oils is an attractive option to produce biodiesel economically, but high free fatty acids (FFA) in waste oils are a serious bottleneck for the process of transesterification. Present investigation deals with the utilization of waste cooking oil (WCO) for the production of biodiesel. The acid value of WCO was 5.5 mg KOH/g which indicated high FFA content. The WCO was subjected to esterification using different acid catalysts (HCl, H2SO4 and H3PO4) and H2SO4 catalyzed reaction was found to be the most efficient since the FFA reduced up to 88.8% at 60 °C with 1:2.5 methanol to oil molar ratio. Transesterification was done in the presence of alkali catalyst (KOH) and Fatty acid methyl ester (FAME) yield was 94% in the presence of 1% catalyst at 50 °C. The biodiesel was characterized based on acid value, saponification value, iodine value, cetane number, specific gravity, viscosity, cloud point, pour point and calorific value. The Gas Chromatography (GC) analysis of synthesized biodiesel was also performed. Base on ASTM standards, alkali catalyzed transesterification was an efficient method to produce biodiesel form WCO. Results revealed that the waste cooking oils can be converted into biodiesel as an energy source along with environmental pollution reduction.

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Metadata

Authors
Sahar, Sadaf, S., Iqbal, J., Ullah, I., Bhatti, H. N., Nouren, S., Habib-ur-Rehman, Nisar, J., & Iqbal, M.
Venue
Sustainable Cities and Society
Publisher
Elsevier BV
Published
2018-08
Volume
41
Pages
220-226
ISSN
2210-6707 (ISSN-L)
OpenAlex
W2804958521
Cited by
456
References
0
FWCI
18.50
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Biodiesel production from waste cooking oil: An efficient technique to convert waste into biodiesel. https://app.cochat.ai/papers/10.1016/j.scs.2018.05.037
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Sahar, Sadaf, S., Iqbal, J., Ullah, I., Bhatti, H. N., Nouren, S., Habib-ur-Rehman, Nisar, J., & Iqbal, M. (2018). Biodiesel production from waste cooking oil: An efficient technique to convert waste into biodiesel. Sustainable Cities and Society. https://doi.org/10.1016/j.scs.2018.05.037

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