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Title: Studies on physicochemical changes during alkali pretreatment and optimization of hydrolysis conditions to improve sugar yield from bagasse
Authors: Janu, Kanakambaran Usha
Sindhu, Raveendran
Binod, Parameswaran
Kuttiraja, Mathiyazhakan
Sukumaran, Rajeev Kumar
Pandey, Ashok
Keywords: Bagasse;Biofuels;Biomass conversion;Biomass hydrolysis;Cellulase;Pretreatment
Issue Date: Nov-2011
Publisher: NISCAIR-CSIR, India
Abstract: This study presents alkali pretreatment of sugarcane bagasse (SCB) and conditions were optimized to improve susceptibility to enzymatic saccharification. Maximal recovery of sugars was obtained with following pretreatment conditions: biomass loading, 5%; NaOH conc., 3%; and residence time at 121°C, 60 min. Physicochemical changes in feedstock after alkali pretreatment, analyzed using SEM, FTIR and XRD, confirmed decrease in lignin content and effective de-polymerization after pretreatment. Optimization of biomass and enzyme loading, surfactant concentration and incubation time for enzymatic hydrolysis was done using a response surface Box Behnken design, which resulted in 94% saccharification efficiency. Surfactant concentration had a major role in hydrolysis and increase in biomass loading improved sugar yield.
Page(s): 952-958
ISSN: 0975-1084 (Online); 0022-4456 (Print)
Appears in Collections:JSIR Vol.70(11) [November 2011]

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