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DatoValore
TitleUltrasonic and thermal pretreatments to enhance the anaerobic bioconversion of olive husks
AbstractOlive husks, typical solid by-products from the olive oil industry, were selected to carry out anaerobic digestion tests. Before digestion, olive husks were subjected to ultrasonic or thermal pretreatments in order to release the organic matter into solution. Both sonication and thermal pretreatment allowed to solubilize the particulate matter with 22% and 72% increase in soluble organics of olive husks, respectively. Nevertheless, such pretreatments caused the release of unwanted molecules in solution, with the related risks of inhibition of the methanogenic process. Biochemical Methane Potential (BMP) tests on olive husks mixed with olive-mill wastewater and dairy wastewater, either pretreated or not, showed that ultrasound pretreatment resulted in 15% increase in volatile solids reduction and a 13% increase in biogas production, while after thermal pretreatment no benefits were observed.
SourceBioresource technology 147, pp. 623–626
KeywordsFood wasteSolubilizationBioconversionPolyphenolsBiogas
JournalBioresource technology
EditorElsevier Applied Science,, Barking, Regno Unito
Year2013
TypeArticolo in rivista
DOI10.1016/j.biortech.2013.08.054
AuthorsGianico A., Braguglia C.M., Mescia D., Mininni G.
Text273312 2013 10.1016/j.biortech.2013.08.054 Food waste Solubilization Bioconversion Polyphenols Biogas Ultrasonic and thermal pretreatments to enhance the anaerobic bioconversion of olive husks Gianico A., Braguglia C.M., Mescia D., Mininni G. 1 Cnr, Istituto di Ricerca Sulle Acque, Area della Ricerca di Roma 1, Monterotondo Roma , Italy 2 Asja Ambiente Italia S.p.A., via Ivrea 70, Rivoli TO , Italy Olive husks, typical solid by products from the olive oil industry, were selected to carry out anaerobic digestion tests. Before digestion, olive husks were subjected to ultrasonic or thermal pretreatments in order to release the organic matter into solution. Both sonication and thermal pretreatment allowed to solubilize the particulate matter with 22% and 72% increase in soluble organics of olive husks, respectively. Nevertheless, such pretreatments caused the release of unwanted molecules in solution, with the related risks of inhibition of the methanogenic process. Biochemical Methane Potential BMP tests on olive husks mixed with olive mill wastewater and dairy wastewater, either pretreated or not, showed that ultrasound pretreatment resulted in 15% increase in volatile solids reduction and a 13% increase in biogas production, while after thermal pretreatment no benefits were observed. 147 Published version Ultrasonic and thermal pretreatments to enhance the anaerobic bioconversion of olive husks Gianico_et_al_2013_olive_husks.pdf Articolo in rivista Elsevier Applied Science, 0960 8524 Bioresource technology Bioresource technology Bioresour. technol. Bioresource technology. camillamaria.braguglia BRAGUGLIA CAMILLA MARIA giuseppe.mininni MININNI GIUSEPPE andrea.gianico GIANICO ANDREA TA.P07.001.005 Recupero di risorse da rifiuti e biomasse