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Improving the FAME yield of in situ transesterification from microalgal biomass through particle size reduction and co-solvent incorporation Rodrigo Navia Energy Fuels, Just Accepted Manuscript • DOI: 10.1021/ef5023303 • Publication Date (Web): 26 Dec 2014 Downloaded from http://pubs.acs.org on January 7, 2015
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Improving the FAME yield of in situ transesterification from microalgal biomass through particle size reduction and cosolvent incorporation
Journal: Manuscript ID: Manuscript Type: Date Submitted by the Author: Complete List of Authors:
Energy & Fuels ef-2014-023303.R2 Article 25-Dec-2014 Hidalgo, Pamela; Universidad de La Frontera, Ciudad, Gustavo; Universidad de La Frontera, Schober, Sigurd; Inst. for chemistry - University Graz, Organic&Bio-organic Chemistry; Karl Franzens University Graz Heinrichstrasse, Institute of Chemistry Mittelbach, Martin; Karl Franzens University Graz Heinrichstrasse, Institute of Chemistry Navia, Rodrigo; Universidad de La Frontera, of Chemical Engineering
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Energy & Fuels
Improving the FAME yield of in-situ transesterification from microalgal biomass through particle size reduction and co-solvent incorporation AUTHOR NAMES: Pamela Hidalgo1, Gustavo Ciudad1,2, Sigurd Schober3, Martin
Mittelbach3& *Rodrigo Navia1,2,4 1
Scientific and Technological Bioresources Nucleus, Universidad de La Frontera, Casilla
54-D, Temuco, Chile. 2
Departament of Chemical Engineering, Universidad de La Frontera, Casilla 54-D,
Temuco, Chile 3
Institute of Chemistry, Working Group Chemistry and Technology of Renewable
Resources, NAWI Graz, University of Graz, Heinrichstraße 28, A-8010 Graz, Austria. 4
Centre for Biotechnology and Bioengineering (CeBiB), Chile
[email protected] [email protected] [email protected] [email protected] [email protected] *AUTHOR ADDRESS: Prof. Dr. Rodrigo Navia
Phone: ++56 45 2325477 Fax:
++56 45 2732402
e-mail:
[email protected] KEYWORDS: in- situ transesterification, microalgae, particle size, co-solvent
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ABSTRACT
In-situ transesterification of biomass has the potential to simplify and reduce cost of biodiesel production from microalgae. This route has the advantage of reducing the number of unit operations, by avoiding the lipids extraction step, prior to transesterification reaction. Thus, the biomass is directly contacted with the alcohol and the catalyst required to convert lipids into biodiesel. In this study essential process parameters for acid in-situ transesterification of microalgae biomass to FAME (fatty acid methyl esters) production were evaluated. Parameters such as particle size of dry microalgae conglomerates and co-solvent use in the reaction mixture were studied, besides of the temperature and catalyst dosage. An experimental of BoxBehnken design was used for the optimization of the FAME yield The best FAME yield obtained under optimized conditions was of 80% wt, using the microalgae particle size fraction of
