Lime and urea pre-treatment of rice straw for biomethanation

Date

10-1983

Degree

Bachelor of Science in Chemistry

College

College of Arts and Sciences (CAS)

Adviser/Committee Chair

William G. Padolina

Abstract

RAYOS, Rowena H. 1983. Lime and Urea Pre-treatment of Rice Straw for Biomethanation. An undergraduate thesis presented in partial fulfillment of the requirements for the degree of Bachelor of Science in Chemistry under Dr. William G. Padolina, University of the Philippines at Los Banos. First semester, 1933-1984.

Rice straw was pre-treated with line and urea solutions with concentrations of 2%, 6%; 10%. All treatments increased gas production relative to the control. Ten percent line solution, followed by 6% lime, Liu. found out to be the most effective pre-treatment for increasing gas yield. lime was observed to be a better pre-treatment agent than urea. Retention time, found out to be about 24 days, was unaffected by the' treatments. Gas composition averaged at 58-60% methane, the rest being carbon dioxide, and was further shown to be independent of the treatment. Volatile solid analysis suggested a direct relationship between reduction in volatile solid content and gas production. Average gas production was calculated at 485 li/kg VS removed.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

LG 993.5 1983 C4 R39

Document Type

Thesis

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