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Improvement of Biogas Production from Orange Peel Waste by Leaching of Limonene
Högskolan i Borås, Akademin för textil, teknik och ekonomi.
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2015 (engelsk)Inngår i: BioMed Research International, ISSN 2314-6133, E-ISSN 2314-6141Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Limonene is present in orange peel wastes and is known as an antimicrobial agent, which impedes biogas production when digesting the peels. In this work, pretreatment of the peels to remove limonene under mild condition was proposed by leaching of limonene using hexane as solvent. The pretreatments were carried out with homogenized or chopped orange peel at 20–40°C with orange peel waste and hexane ratio (w/v) ranging from 1 : 2 to 1 : 12 for 10 to 300 min. The pretreated peels were then digested in batch reactors for 33 days. The highest biogas production was achieved by treating chopped orange peel waste and hexane ratio of 12 : 1 at 20°C for 10 min corresponding to more than threefold increase of biogas production from 0.061 to 0.217 m3methane/kg VS. The solvent recovery was 90% using vacuum filtration and needs further separation using evaporation. The hexane residue in the peel had a negative impact on biogas production as shown by 28.6% reduction of methane and lower methane production of pretreated orange peel waste in semicontinuous digestion system compared to that of untreated peel.

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URN: urn:nbn:se:hb:diva-3729DOI: 10.1155/2015/494182ISI: 000352538700001PubMedID: 25866787Scopus ID: 2-s2.0-84926500127OAI: oai:DiVA.org:hb-3729DiVA, id: diva2:877304
Tilgjengelig fra: 2015-12-06 Laget: 2015-12-06 Sist oppdatert: 2017-12-01bibliografisk kontrollert

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Wikandari, RachmaTaherzadeh, Mohammad J

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