Parametric and optimization studies on two stage high temperature acid hydrolysis of Kans Grass (Saccharum spontaneum) for xylose production

Date

4-2012

Degree

Bachelor of Science in Chemical Engineering

College

College of Engineering and Agro-Industrial Technology (CEAT)

Adviser/Committee Chair

Butch G. Bataller

Committee Member

Dhan Lord B. Fortela, Manolito E. Bambase, Jr., Rex B. Demafelis

Abstract

Kans Grass (Saccharum spontaneum), collected from Sariaya, Quezon, was subjected to two-stage acid hydrolysis in order to produce xylose. Compositional analysis reported a hemicellulose content of 28.23% total dry weight. The first-stage hydrolysis employed was adapted from the optimized dilute-acid pretreatment of cogon grass by Fojas (2008). Parametric and optimization studies were done for the second-stage hydrolysis. A Two-Level Factorial Design was applied to generate the experimental matrix using different sulfuric acid concentrations (2% and 6% v/v), hydrolysis temperature (104.44 and 126.67°C ), and reaction time (15 and 60 min) as factors. The response used for this study is xylose yield. Numerical optimization of the xylose yield resulted to a desirability of 0.946. The optimized hydrolysis condition of 2% v/v sulfuric acid at 126.76°C reacted for 60 minutes is predicted to recover 27.13% w/w xylose yield. A linear mathematical model with an adjusted R-Squared of 0.8666 was obtained.

Language

English

Call Number

LG 993.5 2012 E62 V55

Document Type

Thesis

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