The present study deals with the production of cellulosic ethanol from bagasse using the synthesized TiO2 coupled nanocellulose (NC-TiO2) as catalyst. Aspergillus nidulans AJSU04 cellulase was used for the hydrolysis of bagasse. NC-TiO2 at various concentrations was added to bagasse in order to enhance the yield of reducing sugars. Complex interaction between cellulase, bagasse, NC-TiO2 and the reaction environment is thoroughly studied. A mathematical model was developed to describe the hydrolysis reaction. Ethanol production from enzymatically hydrolyzed sugarcane bagasse catalyzed with NC-TiO2 was carried out using Saccharomyces cerevisiae ATCC 20602. The glucose release rates and ethanol concentrations were determined. Ethanol produced was found to be strongly dependent on pretreatment given, hydrolysis and fermentation conditions. The study confirmed the promising accessibility of NC-TiO2, for enhanced glucose production rates and improved ethanol yield.
Keywords: Ammonium hydroxide (PubChem CID: 14923); Bagasse; Cellulase; Cellulosic ethanol; Citric acid (PubChem CID: 311); Dinitrosalicylic acid (PubChem CID: 89779); Ethyl alcohol (PubChem CID: 702); Na-carboxymethyl cellulose (PubChem CID: 6328154); Nanocellulose; Saccharomyces cerevisiae; Sodium propionate (PubChem CID: 2723816); Sucrose (PubChem CID: 5988); Sulphuric acid (PubChem CID: 1118); Titanium dioxide; Titanium dioxide (PubChem CID: 26042); d-Glucose anhydrous (PubChem CID: 5793).
Copyright © 2015 Elsevier Ltd. All rights reserved.