Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Using Waste Concentrated Sodium Hydroxide Solution From Aluminum Production and Fabric Softener As Phase Transfer Agent in the Environmentally Friendly Biodiesel Synthesis

SANDRO LUIZ BARBOSA DOS SANTOS
* ORCID logo ,
DAVID LEE NELSON
ORCID logo ,
Lucas Paconio Silva
,
Moises Pedro
,
WALLANS TORRES PIO DOS SANTOS
,
ALEXANDRE PEREIRA WENTZ
,
Fernando L. P. Pessoa
,
Foster A. Agblavor
,
Daniel A. Bortoleto
Version 1 : Received: 12 April 2023 / Approved: 13 April 2023 / Online: 13 April 2023 (03:42:31 CEST)

How to cite: DOS SANTOS, S. L. B.; NELSON, D. L.; Silva, L. P.; Pedro, M.; SANTOS, W. T. P. D.; WENTZ, A. P.; Pessoa, F. L. P.; Agblavor, F. A.; Bortoleto, D. A. Using Waste Concentrated Sodium Hydroxide Solution From Aluminum Production and Fabric Softener As Phase Transfer Agent in the Environmentally Friendly Biodiesel Synthesis. Preprints 2023, 2023040293. https://doi.org/10.20944/preprints202304.0293.v1 DOS SANTOS, S. L. B.; NELSON, D. L.; Silva, L. P.; Pedro, M.; SANTOS, W. T. P. D.; WENTZ, A. P.; Pessoa, F. L. P.; Agblavor, F. A.; Bortoleto, D. A. Using Waste Concentrated Sodium Hydroxide Solution From Aluminum Production and Fabric Softener As Phase Transfer Agent in the Environmentally Friendly Biodiesel Synthesis. Preprints 2023, 2023040293. https://doi.org/10.20944/preprints202304.0293.v1

Abstract

Red mud (RM) is a residue obtained from the production of alumina. It contains a high concentration of metal oxides and waste concentrated sodium hydroxide solution (pH = 13). To increase the value of RM, an environmentally friendly process of transesterification using waste cooking oil (WCO), MeOH and concentrated sodium hydroxide solution (CSHS) from aluminum production was proposed. Triglycerides of WCO reacted with MeOH at 60 oC to yield mixtures of fatty acid methyl esters (FAMEs) in the presence of 2.03% (w/w) CSHS/WCO using the CSHS (0.204 mol L-1, predetermined by potentiometric titration) from aluminum production by the Bayer process or with the addition of 0.68% (w/w) fabric softener (3% w/w cetyltrimethylammonium chloride in solution) as a phase transfer (PTA) agent. The addition of PTA to the catalyst resulted in a better yield of the products (greater than 98% yield). A simplified mechanism is presented to account for the experimental results.

Keywords

Environment friendly processes; Bayer residue; waste management; bauxite; contaminants; quality control; fatty acid methyl ester

Subject

Chemistry and Materials Science, Applied Chemistry

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Download PDF Download Supplementary

Comments (0)

We encourage comments and feedback from a broad range of readers. See criteria for comments and our Diversity statement.

Leave a public comment
Send a private comment to the author(s)
* All users must log in before leaving a comment
Views 0
Downloads 0
Comments 0
Get PDF Supplementary Files Cite Share 0
Bookmark BibSonomy Mendeley Reddit Delicious
×
Alerts
Notify me about updates to this article or when a peer-reviewed version is published.
We use cookies on our website to ensure you get the best experience.
Read more about our cookies here.