Parametric study on pretreatment and saccharification of Sargassum cristaefolium for hydrosylate preparation in bioethanol production

Date

10-2009

Degree

Bachelor of Science in Chemical Engineering

College

College of Engineering and Agro-Industrial Technology (CEAT)

Adviser/Committee Chair

Rex B. Demafelis

Co-adviser

Milagrosa M. Goss

Committee Member

Jovita L. Movillion, Veronica P. Migo

Abstract

Acid, alkaline, and enzymatic hydrolyses of Sargassum cristaefolium, a brown alga. were studied to evaluate its performance as ethanol substrate. Effects of acid/alkali concentration, temperature, and reaction time were investigated in acid and alkaline hydrolysis. For enzymatic hydrolysis, factors that were studied are enzyme dosage rate, temperature, and reaction time. Total and reducing sugars in the algal hydrolysate were also determined. Results showed that acid concentration is the most significant factor in both dilute sulfuric and nitric acid hydrolysis, while reaction time for dilute hydrochloric acid hydrolysis. In alkaline hydrolysis, temperature was found to be the most significant factor. however, for enzymatic hydrolysis, all three given factors were recommended to be further studied.For all types of hydrolysis, only minimal fraction of reducing sugar was determined in the reported total sugar concentrations. Enzymatic hydrolysis was able to yield the maximum greatly improve by optimizing dosage rate and reaction time.

Language

English

LC Subject

Chemical engineering

Location

UPLB College of Engineering and Agro-Industrial Technology

Document Type

Thesis

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