Parametric and optimization studies on the two-stage acid hydrolysis of cogon grass (imperata cylindrica) for xylose production

Date

2012

Degree

Bachelor of Science in Chemical Engineering

College

College of Engineering and Agro-Industrial Technology (CEAT)

Adviser/Committee Chair

Butch G. Bataller

Restrictions

Restricted: Not available to the general public. Access is available only after consultation with author/thesis adviser and only to those bound by the confidentiality agreement.

Abstract

The production of xylose using cogon grass (Imperata cylindrica) as a lignocellulosi feedstock was done using a two-stage acids hydrolysis process. Parametric and optimization studies for hydrolysis were carried out using a Two-Level Factorial Design in order to determine the effects of acid concentration (2, 6% v/v H₂SO₄), temperature (104.44, 126.67C), and reaction time (15, 60 minutes) on the xylose yield (%), and the optimum conditions for the process based on these parameters. The parametric study shows that short reaction time composed to high xylose yield. On the other hand, high temperature and acid concentration result to high xylose yields.The linear mathematical model for xylose is, Xylose Yield=24.81+3.63A-4.25C+7.80AB-9.61AC-7.79BC The optimum conditions for xylose production were evaluated based on the linear model. The optimum conditions based on the two responses are 6% v/v H₂SO₄, 126.67°C , and 15 minutes, and the maximum xylose yield was 61.2528%.

Language

English

Location

UPLB College of Engineering and Agro-Industrial Technology (CEAT)

Call Number

LG 993.5 2012 E62 /P47

Document Type

Thesis

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