Ethanol and Methane Production from Oil Palm Frond by Two Stage SSF

Published Date
2014, Vol.52:352–361, doi:10.1016/j.egypro.2014.07.086
2013 International Conference on Alternative Energy in Developing Countries and Emerging Economies (2013 AEDCEE)
Open Access, Creative Commons license

Author

• Tussanee Srimachai ^a
 
• Veerasak Thonglimp ^a
 
• Sompong O-Thong ^a,b,c,,

• aSchool of Engineering and Resources, Walailak University, Nakhon si thammarat 80161, Thailand
• bDepartment of Biology
• cMicrobial Resource Management Research Unit, Faculty of Science, Thaksin University, Phatthalung 93110, Thailand

Available online 25 August 2014.

Abstract

A two step, included process producing ethanol from oil palm fronts (OPF) by two-stage simultaneous saccharification and Saccharomyces cerevisiae fermentation followed by anaerobic digestion of its effluent to produce methane was investigated. OPF was soaked in dilute sulfuric acid, hydrogen peroxide and water consequently pretreated by microwave for preparing of cellulose and followed by simultaneous saccharification and fermentation. The result indicated OPF soaking in water gave a maximal ethanol yield was 0.32 g-ethanol/g-glucose which was 62.75% of the ethanol theoretical yield (0.51g-ethanol/g-glucose). The effluent from the ethanol production process was used to produce methane with the yield of 514 ml CH4/g VS added. Therefore, soaking in water and microwave co-pretreatment could helpful due to its low toxicity and low corrosion compare to sulfuric acid and hydrogen peroxide which improves the efficiency of enzymatic hydrolysis. The maximum energy output of the process (745 kWh/ ton of OPF) was about 72% of the energy contributed by cellulose fraction, contained in the oil palm frond.

Keywords

Ethanol production

Methane production

Co-pretreatment 

Oil palm frond ;

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• ☆
  Selection and peer-review under responsibility of the Organizing Committee of 2013 AEDCEE.

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