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

F. A. Purwandari ; A. P. Sanjaya ; Ria Millati ; M. N. Cahyanto ; I. S. Horvath ; Claes Niklasson (Institutionen för kemi- och bioteknik, Kemisk reaktionsteknik) ; Mohammad J. Taherzadeh
Bioresource Technology (0960-8524). Vol. 128 (2013), p. 461-466.
[Artikel, refereegranskad vetenskaplig]

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.

Nyckelord: Pretreatment, N-methylmorpholine-N-oxide (NMMO), Oil palm empty fruit bunch (OPEFB), Biogas, cellulose, optimization, hydrolysis, ethanol, lyocell, spruce, yield, acid

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Denna post skapades 2013-04-05. Senast ändrad 2015-04-09.
CPL Pubid: 175402


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Institutionen för kemi- och bioteknik, Kemisk reaktionsteknik (2005-2014)


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