Variations and volatile fatty acids, Chemical Oxygen Demand (COD) and gas composition of swine manure in anaerobic culture of streptomyces sp.

Date

5-1996

Degree

Bachelor of Science in Chemistry

College

College of Arts and Sciences (CAS)

Adviser/Committee Chair

Ernesto J Del Rosario

Abstract

PENEYRA, ROMMEL DE LEON. May 1996. University of the Philippines at Los Banos . Variations in Volatile Fatty Acids, Chemical Oxygen Demand (COD) and Gas Composition of Swine Manure in Anaerobic Culture of Streptomyces sp.

ADVISER : ERNESTO J. DEL ROSARIO, Ph. D.

Isolates of Streptomyces sp. were evaluated as possible deodorizers of swine manure. Broth cultures of the mixed streptomyces served as inoculant for treatment of swine manure.

Production of acetic acid, propionic acid, butyric acid and valeric acid was monitored and quantified weekly for 35 days at room temperature in an anaerobic digester at various dilution ratios. Total Volatile Fatty Acids (TVFA) and percent composition at different dilution ratios were determined. VFA composition did not appreciably change upon microbial inoculation but the production of acetic and butyric acids were more susceptible to variations compared to propionic and valeric acids. The production of higher molecular weight (MW) fatty acids was significantly lower relative to that of the low MW ones. Acetic acid was found to be the primary component of VFA at about 55% followed by propionic, butyric, and valeric at 24 %, 16% and 5% (w/w), respectively.

Treatment with Streptomyces sp. resulted in either visible microbial growth or non-visible colonies in swine manure. The trends in TVFA production of untreated swine manure and with Streptomyces sp. having visible growth were the same; the peak in TVFA produced was observed at 1:1 swine manure-water (w/v) ratio.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

LG 993.5 1996 C4 P46

Document Type

Thesis

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