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Inhibition of patchouli oil for anaerobic digestion and enhancement in methane production using reverse membrane bioreactors.
University of Borås, Faculty of Textiles, Engineering and Business.ORCID iD: 0000-0002-7387-2358
University of Borås, Faculty of Textiles, Engineering and Business. (Resource Recovery)ORCID iD: 0000-0003-4887-2433
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2017 (English)In: Renewable energy, ISSN 0960-1481, E-ISSN 1879-0682Article in journal (Refereed) Published
Abstract [en]

Patchouli oil is an essential oil extd. from arom. crop Pogostemon cablin and is widely used in perfumery industry, food industry, and/or even as medicine. The leaves have 4.6% oil that is extd. by steam, but remains an enormous amt. of wastes contg. ca 0.8% oil. Patchouli waste is an interesting substrate for methane prodn. However, the oil has been found to have antibacterial activity. The inhibition of patchouli oil on anaerobic digestion was investigated in this study under thermophilic conditions (55 °C). The patchouli oil showed antibacterial effect, where addn. of 0.05, 0.5 and 5 g/L patchouli oil reduced biogas prodn. by 16.2%, 27.2% and 100% resp. As patchouli oil is a lipophilic compd., hydrophilic polyvinylidene difluoride (PVDF) membrane was used to protect the microorganisms against this inhibitor in a reverse membrane bioreactor (rMBR) system. The methane yield of fresh plant and waste were 86 and 179 NmL CH4/gVS, resp. when using free cells. Although using solely an rMBR did not give significant rise to methane yield, the combination rMBR and free cell strategy to protect part of the digesting microorganisms against this inhibitor considerably enhanced the methane prodn. by 73% for fresh patchouli plant, compared to digestion using free cells. [on SciFinder(R)]

Place, publisher, year, edition, pages
Elsevier Ltd. , 2017.
Keyword [en]
Anaerobic digestion, Inhibition, Membrane bioreactor, Methane, Patchouli biomass, Patchouli oil
National Category
Industrial Biotechnology
Identifiers
URN: urn:nbn:se:hb:diva-12534DOI: 10.1016/j.renene.2017.04.068Scopus ID: 85018389534OAI: oai:DiVA.org:hb-12534DiVA: diva2:1136288
Note

Copyright (C) 2017 American Chemical Society (ACS). All Rights Reserved.; CAPLUS AN 2017:767515(Journal)

Available from: 2017-08-27 Created: 2017-08-27 Last updated: 2017-09-28Bibliographically approved

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Lukitawesa, LukitawesaTaherzadeh, Mohammad J
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