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TitleOn the independence of hydrogen production from methanogenic suppressor in olive mill wastewater
Author(s)Gonçalves, Marta R.
Costa, J. C.
Pereira, M. A.
Abreu, A. A.
Alves, M. M.
Olive mill wastewater
Olive oil mill effluent
Methanogenic suppressor
Anaerobic digestion
Issue date2014
JournalInternational Journal of Hydrogen Energy
CitationGonçalves, M. R.; Costa, J. C.; Pereira, M. A.; Abreu, A. A.; Alves, M. M., On the independence of hydrogen production from methanogenic suppressor in olive mill wastewater. International Journal of Hydrogen Energy, 39(12), 6402-6406, 2014
Abstract(s)Anaerobic degradation of olive mill wastewater (OMW) at concentrations ranging from 2 to 100 g/L of chemical oxygen demand (COD) was assessed in batch assays. Methane was the main final product obtained for the lower concentrations tested. For 25 g COD/L, H2 was temporarily produced, albeit H2 depletion occurred, likely due to homoacetogenesis, since acetate was formed concomitantly. Hydrogen was produced and accumulated permanently in the assays containing 50 g COD/L of OMW. Methanogenesis and homoacetogenesis were naturally inhibited, suggesting that hydrogen recovery from OMW can be performed without the addition of methanogenic suppressors such as 2-bromoethanosulfonate. This fact opens new perspectives for the utilization of high OMW concentrations in a two-stage valorisation process combining biohydrogen and biomethane production.
AccessOpen access
Appears in Collections:CEB - Publicações em Revistas/Séries Internacionais / Publications in International Journals/Series

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