Title:
Alkaline Peroxide Oxidation Pretreatment of Corn Cob and Rice Husks for Bioconversion into Bio-Commodities: Part B-Enzymatic Convertibility of Pretreated Corn Cob to Reducing Sugar
Author(s):
Ayeni, A.O., Adeeyo, O., Awosusi, A.A., Sekoai, P.T., Daramola, M.O.
Document(s):
Paper
Poster
Abstract:
This study focuses on the design and validation of the optimum process parameters for reducing sugar production from a lignocellulosic biomass; corn cob. The statistical modelling for the process parameters was evaluated by applying Response Surface Methodology(RSM) (23-central composite design (CCD) of experiment using STATISTICA software in order to establish the effect of pretreatment conditions on enzymatic digestibility of corn cob to reducing sugars. Three important process variables were considered for the alkaline peroxide oxidation pretreatment process at low–high values of 60–90 oC reaction temperature, 6–10 h reaction time, and 1–3%(v/v) H2O2 concentration. At the validated optimized conditions of 76 oC pretreatment temperature, 8 h time, and 2%(v/v) H2O2 concentration, 2.98 g/L glucose concentration and 1.12 g/L xylose concentration resulting in total 312 mg/g dry biomass reducing sugars yield. Stereoscope microscopy, bright field (BF) light microscopy, and scanning electron microscopy (SEM-EDX) images reveal physical and chemical changes to the lignocellulosic residues after pretreatment and enzymatic conversion. The pretreatment methodology investigated is suitable for lignocellulosic biomass such as corn cob to produce reasonable quantity of reducing sugar required to produce bio-commodities like biofuel and fine chemicals.
Keywords:
biomass, cellulose, enzymatic hydrolysis, lignocellulose, rice husks
Topic:
Biomass Conversion Technologies for Liquid and Gaseous Fuels, Chemicals and Materials
Subtopic:
Bioethanol and sugars from lignocellulosic biomass
Event:
25th European Biomass Conference and Exhibition
Session:
3CV.1.34
Pages:
1365 - 1371
ISBN:
978-88-89407-17-2
Paper DOI:
10.5071/25thEUBCE2017-3CV.1.34
Price:
FREE
