Inhibition of patchouli oil for anaerobic digestion and enhancement in methane production using reverse membrane bioreactors.

Lukitawesa, Lukitawesa (author): Högskolan i Borås,Akademin för textil, teknik och ekonomi,University of Borås

Taherzadeh, Mohammad J, 1965- (author): Högskolan i Borås,Akademin för textil, teknik och ekonomi,Resource Recovery

Niklasson, Claes, 1957 (author): Chalmers tekniska högskola,Chalmers University of Technology

Taherzadeh Esfahani, Mohammad, 1965 (author): Högskolan i Borås,University of Borås

(creator_code:org_t)

Related links:: https://urn.kb.se/re...; show more...; https://doi.org/10.1...; https://research.cha...; https://research.cha...; show less...

Abstract Subject headings

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)]

By the author/editor: Lukitawesa, Luki ...; Safarudin, Ahmad; Millati, Ria, 19 ...; Taherzadeh, Moha ...; Niklasson, Claes ...; Taherzadeh Esfah ...

About the subject

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