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Indian Journal of Chemical Technology (IJCT) >
IJCT Vol.19 [2012] >
IJCT Vol.19(1) [January 2012] >
| Title: | Bioethanol fermentation from untreated and pretreated lignocellulosic wheat straw using fungi Fusarium oxysporum |
| Authors: | Hossain, Sk Masud
Anantharaman, N
Das, Manas |
| Keywords: | Biofuel
Ethanol
Fermentation
Saccharification
Wheat Straw |
| Issue Date: | Jan-2012 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | A comparison has been made among untreated, lime pretreated and dilute
alkaline peroxide pretreated wheat straw for bioethanol production by simultaneous saccharification and fermentation (SSF) process in a continuous stirred
batch bioreactor (CSBR) using fungi Fusarium
oxysporum. The optimum parameters used for the bioethanol
fermentation are: time 48 h, pH 6,
temperature 50, stirring speed 35, and wheat straw loading 35 g/L. Maximum
yield of ethanol is found to be 0.756 , 0.796 and 0.810 g/g of wheat straw under
optimum conditions for untreated, lime pretreated and dilute alkaline peroxide pretreated wheat straw. The sp. fungal growth rate is found to be 5.26 ,
5.40, and 5.88 s−1 and maximum sp. fungal growth rate is 10.52,
10.80 and 11.76 s−1 using the Monod model for the fermentation of
untreated, lime pretreated and dilute alkaline peroxide pretreated wheat straw under optimum conditions respectively. The
fungal growth kinetic parameters are 33.6 , 33.9 and 34.7 g/L respectively for
fermentation of the three samples under the optimum conditions. The sp. carboxy
methyl cellulase ( CMCase) activity are 1185 , 1455 and
1545 min−1 and maximum sp. CMCase activity are 2370, 2910 and 1545 min−1 using
Michaelis-Menten enzyme kinetic model for the fermentation of three samples
respectively under optimum conditions. The CMCase
enzyme kinetic parameters are 34.3, 34.5 and 34.7 g/L for the three samples
respectively under optimum fermentation conditions. Fungi Aspergillus oryzae show the better conversion of
ethanol than fungi Fusarium oxysporum. The
fermentation process follows the first order rate equation in CSBR. |
| Page(s): | 63-70 |
| CC License: |  CC Attribution-Noncommercial-No Derivative Works 2.5 India |
| ISSN: | 0975-0991 (Online); 0971-457X (Print) |
| Source: | IJCT Vol.19(1) [January 2012]
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