Biogas production from duck manure by anaerobic digestion
Date of Publication
1997
Document Type
Master's Thesis
Degree Name
Master of Science in Chemical Engineering
Subject Categories
Chemical Engineering
College
Gokongwei College of Engineering
Department/Unit
Chemical Engineering
Thesis Adviser
Carlito M. Salazar
Defense Panel Chair
Pag-asa D. Gaspillo
Defense Panel Member
Susan A. Roces
Florinda Bacani
Abstract/Summary
This study investigates the production of biogas from duck manure by anaerobic digestion. An all-metal fixed dome digester was used for production of methane from duck manure under mesophilic temperatures (20-40 degrees Centigrade). Biogas production was carried out on batch and semi-continuous processes. Different manure-water proportions and varying amounts of starter were studied under batch process. Results for this process showed that 1:1 with 25 percent starter was the highest producer of biogas than 1:1 with 20 percent starter and 1:2.5 with 25 percent starter. The cumulative biogas volume for 1:1 with 25 percent starter was 792.71 liters from 80 liters of feed digested for 30 days. This ratio also gave the highest methane content of 68 percent. For semi-continuous process, the effects on biogas production of different hydraulic retention times and different organic loading rates were investigated. Manure-water ratio of 1:1 was fed into the digester at varying feed rates and organic loading rates ranging from 0.1286 g - 1.60 g Chemical Oxygen Demand (COD) per L-day. Results showed that highest methane conversion was 2.8 liters CH4 per gram COD removed was achieved at 10-day Hydraulic Retention Time (HRT) with methane content of 63 percent. Highest methane content, however, was achieved at 21-day HRT with 68 percent. An average reduction of 65 percent on COD was attained for batch process and at 21-day and 10-day HRT.
Abstract Format
html
Language
English
Format
Accession Number
TG02627
Shelf Location
Archives, The Learning Commons, 12F Henry Sy Sr. Hall
Physical Description
106 leaves
Keywords
Biogas; Ducks -- Manure; Biodegradation; Bacteria; Anaerobic; Organic wastes -- Recycling; Methane
Recommended Citation
San Gabriel, A. C. (1997). Biogas production from duck manure by anaerobic digestion. Retrieved from https://animorepository.dlsu.edu.ph/etd_masteral/1814