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TitleCo-digestion of Sargassum sp. with glycerol and waste frying oil following a design of experiments
Author(s)Oliveira, João Vítor
Alves, M. M.
Costa, J. C.
KeywordsAnaerobic co-digestion
Design of experiments
Sargassum sp.
Waste frying oil
Issue date2014
CitationOliveira, J. V.; Alves, M. M.; Costa, J. C., Co-digestion of Sargassum sp. with glycerol and waste frying oil following a design of experiments. XI Latin American Workshop and Symposium of Anaerobic Digestion. La Habana, Cuba, Nov. 24-27, 691-701, 2014.
Abstract(s)A response surface methodology was adopted to assess the optimal conditions for methane production from the macroalgae Sargassum sp. co-digested with glycerol (Gly) and waste frying oil (WFO). Three variables were tested: % total solids of algae (%TSSargassum sp.), co-substrate concentration (gGly/WFO L-1); and, co-substrate type (Gly or WFO). The Biochemical Methane Potential (BMP) of Sargassum sp. was 181±1 L CH4 kg-1 COD. The co-digestion with Gly and WFO increased the BMP by 56% and 46%, respectively. The methane production rate (k), showed similar behaviour as the BMP, increasing 38% and 19% with Gly and WFO, respectively. The higher BMP (283±18 L CH4 kg-1 COD) and k (65.9±2.1 L CH4 kg-1 COD d-1) was obtained in the assay with 0.5% TS and 3.0 gGly L-1. Co-digestion with Gly or WFO is a promising process to enhance the BMP from the macroalgae Sargassum sp..
TypeConference paper
AccessOpen access
Appears in Collections:CEB - Artigos em Livros de Atas / Papers in Proceedings

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