title: Catalytic conversion of sugarcane bagasse to cellulosic ethanol: TiO2 coupled nanocellulose as an effective hydrolysis enhancer.
abstract: 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.
authors.affiliation: Process Engineering Division, School of Chemical and Bio Engineering, Addis Ababa Institute of Technology, Addis Ababa University, Ethiopia. Electronic address: anu3480@gmail.com.
authors.forename: S Anuradha
authors.initials: SA
authors.lastname: Jabasingh
authors.affiliation: Chemical Engineering Department, Sathyabama University, Tamilnadu 600119, India.
authors.forename: D
authors.initials: D
authors.lastname: Lalith
authors.affiliation: Chemical Engineering Department, Sathyabama University, Tamilnadu 600119, India.
authors.forename: M Arun
authors.initials: MA
authors.lastname: Prabhu
authors.affiliation: Process Engineering Division, School of Chemical and Bio Engineering, Addis Ababa Institute of Technology, Addis Ababa University, Ethiopia.
authors.forename: Abubekker
authors.initials: A
authors.lastname: Yimam
authors.affiliation: Process Engineering Division, School of Chemical and Bio Engineering, Addis Ababa Institute of Technology, Addis Ababa University, Ethiopia.
authors.forename: Taye
authors.initials: T
authors.lastname: Zewdu
mesh_terms: D001233:Aspergillus nidulans / Q000201:enzymology / Q000378:metabolism; D002480:Cellulase / Q000737:chemistry* / Q000378:metabolism; D002482:Cellulose / Q000031:analogs & derivatives / Q000737:chemistry*; D000431:Ethanol / Q000737:chemistry* / Q000378:metabolism; D005285:Fermentation; D006868:Hydrolysis; D007218:Industrial Microbiology / Q000379:methods*; D012441:Saccharomyces cerevisiae / Q000201:enzymology / Q000378:metabolism; D014025:Titanium / Q000737:chemistry*
chemical_list: C009495:titanium dioxide; D000431:Ethanol; D002482:Cellulose; C027433:bagasse; D014025:Titanium; D002480:Cellulase
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)