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Conventional and microwave pyrolysis of a macroalgae waste from the Agar–Agar industry. Prospects for bio-fuel production

AuthorsFerrera Lorenzo, Nuria ; Fuente Alonso, Enrique ; Bermúdez Menéndez, José Miguel ; Suárez Ruiz, Isabel ; Ruiz Bobes, Begoña
KeywordsAlgae meal
Microwave furnace
Conventional electrical furnace
Issue DateJan-2014
CitationBioresource Technology 151: 199-206 (2014)
Abstract[EN] A comparative study of the pyrolysis of a macroalgae industrial solid waste (algae meal) in an electrical conventional furnace and in a microwave furnace has been carried out. It was found that the chars obtained from both pyrolyses are similar and show good properties for performing as a solid bio-fuel and as a precursor of activated carbon. Bio-oils from conventional pyrolysis have a greater number of phenolic, pyrrole and alkane compounds whereas benzene and pyridine compounds are more predominant in microwave pyrolysis with a major presence of light compounds. The bio-gas fraction from microwave pyrolysis presents a much higher syngas content (H2 + CO), and a lower CO2 and CH4 proportion than that obtained by conventional pyrolysis. Yields are similar for both treatments with a slightly higher gas yield in the case of microwave pyrolysis due to the fact that microwave heating favors heterogeneous reactions between the gases and the char.
Publisher version (URL)http://dx.doi.org/10.1016/j.biortech.2013.10.047
Appears in Collections:(INCAR) Artículos
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