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

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• 作者：Fiametta Ayu Purwandari^a ; Adhitya Pitara Sanjaya^a ; Ria Millati^a ; ^{ria_millati@ugm.ac.id} ; Muhammad Nur Cahyanto^a ; Ilona Sá ; rvá ; ri Horvá ; th^b ; Claes Niklasson^c ; Mohammad J. Taherzadeh^b
• 关键词：Pretreatment ; N-methylmorpholine-N-oxide (NMMO) ; Oil palm empty fruit bunch (OPEFB) ; Biogas
• 刊名：Bioresource Technology
• 出版年：2013
• 出版时间：January, 2013
• 年：2013
• 卷：128
• 期：Complete
• 页码：461-466
• 全文大小：552 K

文摘

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 ¡ãC 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 ¡ãC. It resulted in 0.408 Nm³/kg VS methane yield and 0.032 Nm³ CH₄/kg VS/day initial methane production rate, which correspond in improving by 48 % and 167 % compared to the untreated OPEFB, respectively.