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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
chemical engineering
Effect of high pressure thermal pretreatment on Chlorella vulgaris biomass: Organic matter solubilisation and biochemical methane potential
Fuel, Volume 117, No. PART A, Year 2014
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Description
This study investigates the effect of high pressure thermal hydrolysis on organic matter solubilisation and biogas production from Chlorella vulgaris biomass. Microalgae biomass was subjected to three temperatures, namely 140, 160, and 180°C and two heating times (10 and 20 min). Results showed that carbohydrates release prevailed over proteins. Carbohydrates were solubilised concomitantly with increasing temperatures. According to the infrared spectra and monomeric sugars determined in the pretreated medium, temperatures applied clearly affected the solubilisation of structural carbohydrates of the microalgae cell wall. Likewise, thermal pretreatment provided enhanced methane production with regard to the raw algal biomass. Enhanced hydrolysis rate constant supported faster biogas production. Regardless the heating time employed, increasing temperatures depicted increasing methane production. Even thought, organic matter solubilisation was greater at 180°C, the anaerobic biodegradability did not show the same trend. This fact was ascribed to the formation of reaction products that hampered methane production. Best case scenario was achieved by subjecting biomass to 160°C which resulted in 64% methane yield enhancement. © 2013 Published by Elsevier Ltd.
Authors & Co-Authors
Méndez, Lara
Spain, Mostoles
Instituto Imdea Energía
Mahdy, Ahmed
Spain, Mostoles
Instituto Imdea Energía
Egypt, Zagazig
Zagazig University
Demuez, Marie
Spain, Mostoles
Instituto Imdea Energía
Ballesteros Perdices, Mercedes
Spain, Mostoles
Instituto Imdea Energía
Spain, Madrid
Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas
González-Fernández, Cristina
Spain, Mostoles
Instituto Imdea Energía
Statistics
Citations: 119
Authors: 5
Affiliations: 3
Identifiers
Doi:
10.1016/j.fuel.2013.09.032
ISSN:
00162361