Pretreatment of oil palm empty fruit bunch (OPEFB) by N-methylmorpholine-N-oxide (NMMO) for biogas production: Structural changes and digestion improvement

Pretreatment of OPEFB (oil palm empty fruit bunch) by NMMO (N-methylmorpholine-N-oxide) on its subsequent digestions was investigated. The pretreatments were carried out at 90 and 120 degrees C for 1, 3, and 5 h in three different modes of dissolution (by 85% NMMO solution), ballooning (79% NMMO solution), and swelling (73% NMMO solution). The total solid recovery after the pretreatment was 89-94%. The pretreatment process did not have a major impact on the composition of OPEFB, other than a reduction of ash from 5.4% up to 1.3%. The best improvement in biogas production was achieved by a dissolution mode pretreatment of OPEFB, using conditions of 85% NMMO, 3 h, and 120 degrees C. It resulted in 0.408 Nm(3)/kg VS methane yield and 0.032 Nm(3) CH4/kg VS/day initial methane production rate, which correspond in improving by 48% and 167% compared to the untreated OPEFB, respectively.

Sanjaya, A. P.Gadjah Mada University (författare)
Millati, Ria,1972Gadjah Mada University(Swepub:cth)millati (författare)
Cahyanto, M. N.Gadjah Mada University (författare)
Sárvári Horváth, IlonaHögskolan i Borås,Institutionen Ingenjörshögskolan,Biotechnology(Swepub:hb)ish (författare)
Niklasson, Claes,1957Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)claesn (författare)
Taherzadeh Esfahani, Mohammad,1965Högskolan i Borås,University of Borås(Swepub:cth)taher (författare)
Taherzadeh, M.J.Högskolan i Borås,Institutionen Ingenjörshögskolan,Biotechnology(Swepub:hb)mjt (författare)
Gadjah Mada UniversityInstitutionen Ingenjörshögskolan (creator_code:org_t)

Av författaren/redakt...: Purwandari, F. A ...; Sanjaya, A. P.; Millati, Ria, 19 ...; Cahyanto, M. N.; Sárvári Horváth, ...; Niklasson, Claes ...; visa fler...; Taherzadeh Esfah ...; Taherzadeh, M.J.; visa färre...

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TEKNIK OCH TEKNOLOGIER: TEKNIK OCH TEKNO ...; och Industriell biot ...; och Bioenergi

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