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Title

Influence of a steam-explosion pre-treatment on the methane yield and kinetics of anaerobic digestion of two-phase olive mil solid waste or alperujo

AuthorsRincón, Bárbara ; Rodríguez-Gutiérrez, Guillermo ; Bujalance, L.; Fernández-Bolaños Guzmán, Juan ; Borja Padilla, Rafael
KeywordsOlive mill solid waste
Anaerobic processes
Batch processing
Steam-explosion pre-treatment
Kinetics parameters
Cellulose
Issue DateJul-2016
PublisherElsevier
CitationProcess Safety and Environmental Protection 102: 361-369 (2016)
AbstractThis study investigated the effect of a steam-explosion pre-treatment on the anaerobic digestion of the two-phase olive mill solid waste (OMSW) or alperujo. The OMSW was subjected to a steam explosion pre-treatment at 200 °C and 1.57 MPa during 5 min. After this pre-treatment a solid fraction (SF) and a liquid fraction (LF) were generated. These two fractions were used to obtain methane through anaerobic digestion with the aim of evaluating the effect of the pre-treatment on the methane yields obtained. Biochemical methane potential (BMP) tests of both untreated OMSW and steam-explosion pre-treated OMSW, i.e. SF and LF, as described above, revealed that the maximum methane yield (589 ± 42 mL CH4/g VSadded) was achieved for the LF generated after the pre-treatment. From a kinetic point of view the BMP tests of untreated OMSW and the SF obtained after the pre-treatment showed a first exponential stage followed by a second sigmoidal stage after a lag period. By contrast for the LF, only a single exponential stage was observed.
Description30 Páginas; 2 Figuras; 4 Tablas
Publisher version (URL)http://dx.doi.org/10.1016/j.psep.2016.04.010
URIhttp://hdl.handle.net/10261/158406
ISSN0957-5820
E-ISSN1744-3598
Appears in Collections:(IG) Artículos
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