Classification of macroalgae as fuel and its thermochemical behaviour

A preliminary classification of five macroalgae from the British Isles; Fucus vesiculosus, Chorda filum, Laminaria digitata, Fucus serratus, Laminaria hyperborea, and Macrocystis pyrifera from South America, has been presented in terms of a Van Krevelen diagram. The macroalgae have been characterise...

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Bibliographic Details
Published in:Bioresource technology 2008-09, Vol.99 (14), p.6494-6504
Main Authors: Ross, A.B., Jones, J.M., Kubacki, M.L., Bridgeman, T.
Format: Article
Language:English
Subjects:
Bioelectric Energy Sources
Biological and medical sciences
Chorda filum
Combustion
Eukaryota - classification
Eukaryota - physiology
Fucus serratus
Fucus vesiculosus
Fuel analysis
Fundamental and applied biological sciences. Psychology
Laminaria digitata
Laminaria hyperborea
Macroalgae
Macrocystis pyrifera
Marine biomass
Miscanthus
Pyrolysis
Species Specificity
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Summary:A preliminary classification of five macroalgae from the British Isles; Fucus vesiculosus, Chorda filum, Laminaria digitata, Fucus serratus, Laminaria hyperborea, and Macrocystis pyrifera from South America, has been presented in terms of a Van Krevelen diagram. The macroalgae have been characterised for proximate and ultimate analysis, inorganic content, and calorific value. The different options for thermal conversion and behaviour under combustion and pyrolysis have been evaluated and compared to several types of terrestrial biomass including Miscanthus, short rotation Willow coppice and Oat straw. Thermal treatment of the macroalgae has been investigated using thermogravimetry (TGA) and pyrolysis-gc-ms. Combustion behaviour is investigated using TGA in an oxidising atmosphere. The suitability of macroalgae for the different thermal processing routes is discussed. Ash chemistry restricts the use of macroalgae for direct combustion and gasification. Pyrolysis produces a range of pentosans and a significant proportion of nitrogen containing compounds. High char yields are produced.
ISSN:0960-8524
1873-2976
DOI:10.1016/j.biortech.2007.11.036