scholarly journals Influence of Acid Hydrolysis Reaction Time on the Isolation of Cellulose Nanowhiskers from Oil Palm Empty Fruit Bunch Microcrystalline Cellulose

BioResources ◽  
2017 ◽  
Vol 12 (3) ◽  
Author(s):  
Nasrullah Razali ◽  
Md. Sohrab Hossain ◽  
Owolabi Abdulwahab Taiwo ◽  
Mazlan Ibrahim ◽  
Nur Wahidah Mohd Nadzri ◽  
...  
2013 ◽  
Vol 699 ◽  
pp. 77-82 ◽  
Author(s):  
S. Duangwang ◽  
C. Sangwichien

Oil palm empty fruit bunch is a lignocellulosic material from palm oil plantations. It is a potential source of xylose which can be used as a raw material for production of xylitol. Using of lignocellulosic waste for bioconversion to fuels and chemicals is justifiable as these materials are low cost, renewable and widespread sources of sugars. The objective of the present study was to determine the effect of H2SO4 concentration, reaction temperature and reaction time for acid hydrolysis of pretreated OPEFB, pretreated OPEFB with reaction temperature, reaction time and NaOH concentration were 130 °C, 40 min and 15% (w/v), respectively to achieve high xylose yield. Batch reactions were carried out under various reaction temperature, reaction time and H2SO4 concentration. Response Surface Methodology (RSM) was followed to optimize acid hydrolysis in order to obtain high yield of xylose. The optimum reaction temperature, reaction time and H2SO4 concentration were found to be 140 °C, 90 min and 7% (w/v), respectively. The maximum value of xylose was obtained 56.39 g/l by using the above condition. The best result of xylose yield obtained was 126%.


2007 ◽  
Vol 98 (3) ◽  
pp. 554-559 ◽  
Author(s):  
S.H.A. Rahman ◽  
J.P. Choudhury ◽  
A.L. Ahmad ◽  
A.H. Kamaruddin

2017 ◽  
Vol 17 (7) ◽  
pp. 4970-4976 ◽  
Author(s):  
Adriana de Campos ◽  
Alfredo R. de Sena Neto ◽  
Vanessa B Rodrigues ◽  
Vanessa A Kuana ◽  
Ana Carolina Correa ◽  
...  

2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Satriani Aga Pasma ◽  
Rusli Daik ◽  
Mohamad Yusof Maskat ◽  
Osman Hassan

Oil palm empty fruit bunch fiber (OPEFB) is a lignocellulosic waste from palm oil mills. It contains mainly cellulose from which glucose can be derived to serve as raw materials for valuable chemicals such as succinic acid. A three-level Box-Behnken design combined with the canonical and ridge analysis was employed to optimize the process parameters for glucose production from OPEFB cellulose using enzymatic hydrolysis. Organosolv pretreatment was used to extract cellulose from OPEFB using ethanol and water as the solvents. The extracted cellulose was characterized by thermogravimetric analysis, FTIR spectroscopy, and field emission scanning electron microscopy. Hydrolysis parameters including amount of enzyme, amount of cellulose, and reaction time were investigated. The experimental results were fitted with a second-order polynomial equation by a multiple regression analysis and found that more than 97% of the variations could be predicted by the models. Using the ridge analysis, the optimal conditions reaction time found for the production of glucose was 76 hours and 30 min, whereas the optimum amount of enzyme and cellulose was 0.5 mL and 0.9 g, respectively. Under these optimal conditions, the corresponding response value predicted for glucose concentration was 169.34 g/L, which was confirmed by validation experiments.


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