Please use this identifier to cite or link to this item:

Title: Heterogeneous acid-catalysts for biodiesel production from waste cooking oil
Authors: Castanheiro, José
Editors: Konur, Ozcan
Keywords: Biodiesel
Waste cooking oil
Heterogeneous catalysts
Issue Date: 6-May-2021
Publisher: CRC Press - Taylor and Francis Group
Citation: J.E. Castanheiro*, “Heterogeneous acid-catalysts for biodiesel production from waste cooking oil” pp. 343-349, Chapter 31, in Handbook of Biodiesel and Petrodiesel Fuels: Science, Technology, Health, and Environment (Volume II), Ozcan Konur (Ed.), CRC Press- Taylor and Francis Group, London, 2021.
Abstract: Biodiesel is a mixture of ‘fatty acid methyl esters’ (FAME) or ‘fatty acid ethyl esters’ (FAEE). It is an environmentally friendly fuel and is biodegradable and not toxic. Biodiesel results from the transesterification reaction between a triglyceride mole cule and three alcohol molecules. This reaction yields three FAME molecules and a glycerol molecule. Usually, the transesterification reaction is done using a base (NaOH or KOH) as catalyst. Figure 31.1 exemplifies the transesterification of tri glycerides with an alcohol to biodiesel and glycerol (Avhad and Marchetti, 2015). The raw material for biodiesel production is edible vegetable oils (e.g. sunflower and soybean), nonedible vegetable oils (e.g. Jatropha oil), WCO, and animal fats (Fonseca et al., 2019; Lima and Castanheiro 2018). However, when the raw material presents a high amount of ‘free fatty acids’ (FFA), these carboxylic acids react with the catalyst (NaOH or KOH), yielding soap. Then, in order to overcome this prob lem, an esterification step before the transesterification reaction will be necessary. Equation 31.1 shows the scheme of esterification of fatty acid with an alcohol.
ISBN: 9780367456139
Type: bookPart
Appears in Collections:MED - Publicações - Capítulos de Livros
QUI - Publicações - Capítulos de Livros

Files in This Item:

File Description SizeFormat
Cap_livro_Handbook_of_Biodiesel.pdf247.96 kBAdobe PDFView/OpenRestrict Access. You can Request a copy!
FacebookTwitterDeliciousLinkedInDiggGoogle BookmarksMySpaceOrkut
Formato BibTex mendeley Endnote Logotipo do DeGóis 

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.


Dspace Dspace
DSpace Software, version 1.6.2 Copyright © 2002-2008 MIT and Hewlett-Packard - Feedback
UEvora B-On Curriculum DeGois