Optimization of the carbonization of rice (Oryza sativa) straw using the modified drum type carbonizer

Date

4-2013

Degree

Bachelor of Science in Agricultural Engineering

Major Course

Major in Agricultural and Bio-Process Engineering

College

College of Engineering and Agro-Industrial Technology (CEAT)

Adviser/Committee Chair

Elauria, Jessie C.

Committee Member

Yaptenco, Kevin F.

Abstract

Rice straw was carbonized and the effects of the fuel load, number of air openings, and chimney height on the percentage actual recovery of carbonized rice straw was determined. The settings of each factor were 3, 4.5, 6 for the fuel load 4, 6, 8 for the number of air openings, and 0.6, 0.8, 0.1 for the chimney height. After conducting ANOVA, it was determined that only fuel load has significantly affected the percentage actual recovery of carbonized rice straw. This was true at 95%confidence limit. The increase in fuel load decreases the percentage actual recovery. The optimum condition for producing carbonized rice straw was determined to be 3 kg fuel load, 4 air opening and 1meter chimney height, and the theoretical actual recovery was between 20-30%. Verification runs were conducted to confirm the theoretical results of the optimization and the Duncan's Multiple Range Test was conducted to test the significant difference of the means. The carbonized rice straw was manually briquetted, using cassava starch. The briquetted charcoal was subjected to water boiling test in a cook stove to test the performance as domestic fuel. The burning rate was 0.098g/s, specific fuel consumption was 4.24 kilogram of fuel per kilogram of water evaporated, and the thermal efficiency was 15.3%.

Language

English

Location

UPLB College of Engineering and Agro-Industrial Technology

Call Number

LG 993.5 2013 A2 O96

Document Type

Thesis

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