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Ethanol production from alkali-pretreated oil palm empty fruit bunch by simultaneous saccharification and fermentation with mucor indicus

Abdi Christia ; Arima Setowati ; Ria Millati ; Keikhosro Karimi ; Muhammad Cahyanto ; Claes Niklasson (Institutionen för kemi och kemiteknik, Kemisk reaktionsteknik) ; Mohammad J. Taherzadeh
International Journal of Green Energy (1543-5075). Vol. 13 (2016), 6, p. 566-572.
[Artikel, refereegranskad vetenskaplig]

Oil palm empty fruit bunch (OPEFB) is a potential raw material for production of lignocellulosic bioethanol. The OPEFB was pretreated with 8% sodium hydroxide (NaOH) solution at 100°C for 10 to 90 min. Enzymatic digestion was carried out using cellulase and β-glucosidase at 45°C for 24 h. It was then inoculated with Mucor indicus spores suspension and fermented under anaerobic conditions at 37°C for 96 h. Sodium hydroxide pretreatment effectively removed 51–57% of lignin in the OPEFB and also its hemicellulose (40–84%). The highest glucan digestibility (0.75 g/g theoretical glucose) was achieved in 40-min NaOH pretreatment. Fermentation by M. indicus resulted in 68.4% of the theoretical ethanol yield, while glycerol (16.2–83.2 mg/g), succinic acid (0–0.4 mg/g), and acetic acid (0–0.9 mg/g) were its by-products. According to these results, 11.75 million tons of dry OPEFB in Indonesia can be converted into 1.5 billion liters of ethanol per year.

Nyckelord: Ethanol, Mucor indicus, oil palm empty fruit bunch (OPEFB), pretreatment, sodium hydroxide, simultaneous saccharification and fermentation,

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Denna post skapades 2016-09-12. Senast ändrad 2017-06-30.
CPL Pubid: 241652


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