Please use this identifier to cite or link to this item: http://hdl.handle.net/1822/31751

TitleDesign of experiments to assess pre-treatment and co-digestion strategies that optimize biogas production from macroalgae Gracilaria vermiculophylla
Author(s)Oliveira, J. V. M.
Alves, M. M.
Costa, J. C.
KeywordsAlgae
Gracilaria sp.
Glycerol
Pre-treatment
Sewage sludge
Issue dateJun-2014
PublisherElsevier B.V.
JournalBioresource Technology
CitationOliveira, J. V.; Alves, M. M.; Costa, J. C., Design of experiments to assess pre-treatment and co-digestion strategies that optimize biogas production from macroalgae Gracilaria vermiculophylla. Bioresource Technology, 162, 323-330, 2014
Abstract(s)A design of experiments was applied to evaluate different strategies to enhance the methane yield of macroalgae Gracilaria vermiculophylla. Biochemical Methane Potential (BMP) of G. vermiculophylla after physical pre-treatment (washing and maceration) reached 481 ± 9 L CH4 kg−1 VS, corresponding to a methane yield of 79 ± 2%. No significant effects were achieved in the BMP after thermochemical pre-treatment, although the seaweeds solubilisation increased up to 44%. Co-digestion with glycerol or sewage sludge has proved to be effective for increasing the methane production. Addition of 2% glycerol (w:w) increased the BMP by 18%, achieving almost complete methanation of the substrate (96 ± 3%). Co-digestion of seaweed and secondary sludge (15:85%, TS/TS) increased the BMP by 25% (605 ± 4 L CH4 kg−1 VS) compared to the seaweed individual digestion.
TypeArticle
URIhttp://hdl.handle.net/1822/31751
DOI10.1016/j.biortech.2014.03.155
ISSN0960-8524
e-ISSN0960-8524
Publisher versionhttp://www.journals.elsevier.com/bioresource-technology/
Peer-Reviewedyes
AccessOpen access
Appears in Collections:CEB - Publicações em Revistas/Séries Internacionais / Publications in International Journals/Series

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