期刊名称：International Journal of Environment and Bioenergy
电子版ISSN：2165-8951
出版年度：2012
卷号：3
期号：3
页码：193-200
语种：English
出版社：Modern Scientific Press
摘要：Enzymatic hydrolysis with high substrate loading of palm oil (Elaeis guineensis) empty fruit bunch (EFB) and water-hyacinth (Eichhornia crassipes) were investigated as a part of ethanol production from lignocelluloses for evaluating their competitiveness as raw material. Pretreatment was conducted at 105 ℃, 121 ℃ and 165 ℃ in NaOH solution varied 1 – 6M. In water hyacinth pulping, temperature gave significant effect in weight loss from 54 – 60 % in 105 ℃ to 70 – 76 % in 121 ℃, but effect of NaOH concentration was insignificant. EFB pulping process in 121 ℃ gave insignificant effect since the weight loss is less than 6% in all varied NaOH concentration. Increasing the pulping temperature up to 165 ℃ gave the similar weight loss to water hyacinth. Commercial cellulase enzyme was used 10 FPU/gr-substrate dw for hydrolyzing 20%dw substrate in room temperature and pH 4.8. Hydrolysis conversion of water hyacinth pulped in 1M NaOH at 105 ℃ and 121 ℃ were 36.89% and 40.56%, respectively. This result was significantly lower than water hyacinth pulped in 2M and 3M NaOH which were 63 –67.7% and 60 – 63.5% respectively. No significant conversion difference in 2M and 3M at those difference temperatures. EFB pulped at 121 ℃ in all varied NaOH concentration gave hydrolysis conversion less than 6.5% and elevating pulping temperature to 165 ℃ increase the conversion to 38.55%. Water hyacinth is easier to process as bioethanol raw material but EFB have an advantage as raw material since it can also be used as energy source in raw material pretreatment.
