Effect of pre-ozonation on decolorization and organic matter removal of distillery slops

Date

6-1998

Degree

Bachelor of Science in Chemistry

College

College of Arts and Sciences (CAS)

Adviser/Committee Chair

Veronica P. Migo

Co-adviser

Catalino G. Alfafara

Abstract

Ozonation of distillery slops for 10 hours resulted in a maximum COD (chemical oxygen demand) removal of 16%. No further removal of COD was observed beyond 10 hrs. The biochemical oxygen demand (BOD), however, increased to a maximum of 28% (from 0.38 to 0.50) with no further change after 10 hrs of pre-ozonation. Decolorization of ozonated slops had an efficiency of about 80% in 43 hrs. The decolorization was faster during the first 10 hrs, and gradually slowed down as the ozonation progressed. Color removal was still observed beyond 10 hrs even if there were no further changes in COD and BOD. The biodegradability of the pre-ozonated slops was improved as measured by the BOD/COD ratio and anaerobic digestion test: the BOD/COD ratio increased by 32% and organic matter removal (as COD) from the anaerobic digestion test (15 days) was 38%. Raw (unozonated) slops had no significant COD removal in the anaerobic digestion test. By using empirical methods, decolorization of slops by pre-ozonation was found to reasonably fit a second order equation with a rate constant of 0.144 abs-1 h 1 and a coefficient of regression of the linearized plot of 0.995. Pre-ozonation had a greater effect on the decolorization and enhancement of biodegradability of slops compared to organic matter removal.

Language

Filipino

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

Thesis

Document Type

Thesis

This document is currently not available here.

Share

COinS