Publications in International Journals / Series (Article (International))
On the independence of hydrogen production from methanogenic suppressor in olive mill wastewater
- Gonçalves, Marta R.; Costa, José Carlos; Pereira, M. Alcina; Abreu, Ângela A.; Alves, M. Madalena
- International Journal of Hydrogen Energy, 39(12), 6402-6406, 2014
Publisher: Elsevier
Abstract
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 perform ...
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