Please use this identifier to cite or link to this item: https://hdl.handle.net/10316/27725
Title: A biorefinery from Nannochloropsis sp. microalga – Energy and CO2 emission and economic analyses
Authors: Ferreira, Ana F. 
Ribeiro, Lauro A. 
Batista, Ana P. 
Marques, Paula A. S. S. 
Nobre, Beatriz P. 
Palavra, António M. F. 
Silva, Patrícia Pereira da 
Gouveia, Luísa 
Silva, Carla 
Keywords: Microalga biorefinery; CO2; Energy; Economical evaluation; Life cycle
Issue Date: Jun-2013
Publisher: Elsevier
Citation: FERREIRA, Ana F. [et. al] - A biorefinery from Nannochloropsis sp. microalga – Energy and CO2 emission and economic analyses. "Bioresource Technology". ISSN 0960-8524. Vol. 138 (2013) p. 235–244
Serial title, monograph or event: Bioresource Technology
Volume: 138
Abstract: Are microalgae a potential energy source for biofuel production? This paper presents the laboratory results from a Nannochloropsis sp. microalga biorefinery for the production of oil, high-value pigments, and biohydrogen (bioH2). The energy consumption and CO2 emissions involved in the whole process (microalgae cultivation, harvest, dewater, mill, extraction and leftover biomass fermentation) were evaluated. An economic evaluation was also performed. Oil was obtained by soxhlet (SE) and supercritical fluid extraction (SFE). The bioH2 was produced by fermentation of the leftover biomass. The oil production pathway by SE shows the lowest value of energy consumption, 177-245 MJ/MJprod, and CO2 emissions, 13–15 kgCO2/MJprod. Despite consuming and emitting c.a. 20% more than the SE pathway, the oil obtained by SFE, proved to be more economically viable, with a cost of 365€/kgoil produced and simultaneously extracting high-value pigments. The bioH2 as co-product may be advantageous in terms of product yield or profit.
URI: https://hdl.handle.net/10316/27725
ISSN: 0960-8524
DOI: 10.1016/j.biortech.2013.03.168
Rights: openAccess
Appears in Collections:I&D INESCC - Artigos em Revistas Internacionais

Files in This Item:
File Description SizeFormat
A Biorefinery from Nannochloropsis sp. microalga.pdf657.05 kBAdobe PDFView/Open
Show full item record

SCOPUSTM   
Citations

72
checked on May 20, 2024

WEB OF SCIENCETM
Citations 5

54
checked on May 2, 2024

Page view(s) 50

373
checked on May 14, 2024

Download(s) 50

682
checked on May 14, 2024

Google ScholarTM

Check

Altmetric

Altmetric


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