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http://dx.doi.org/10.5338/KJEA.2010.29.2.197

Optimum Recovery of Biogas from Pig Slurry with Different Compositions  

Park, Woo-Kyun (National Academy of Agricultural Science, Rural Development Administration)
Jun, Hang-Bae (Department of Environmental Engineering, Chungbuk National University)
Kwon, Soon-Ik (National Academy of Agricultural Science, Rural Development Administration)
Chae, Kyu-Jung (Kolon Engineering and Construction Co., Ltd.)
Park, Noh-Back (National Academy of Agricultural Science, Rural Development Administration)
Publication Information
Korean Journal of Environmental Agriculture / v.29, no.2, 2010 , pp. 197-205 More about this Journal
Abstract
This study was conducted to investigate the optimum conditions for efficient methane production through anaerobic digestion of pig waste slurry. The examined parameters were organic matter content of the pig slurry, the ratio of seed sludge to pig slurry, and stirring intensity of the digestion reactor. The effects of types of slurry produced from different purpose-based pigs fed with different feeds were also tested. The methane concentration in the produced biogas was 45% when the ratio of seed sludge to pig slurry was 50% and total solid (TS) concentration was 1%, and it increased in proportional to TS concentration increases from 3 to 7%. At 3 and 5% of TS concentration, increasing mixing velocity from 80 to 160 rpm resulted in higher biogas production amount. However, mixing amount of seed sludge did not cause any significant effect on biogas production. Overall, the most efficient biogas production was achieved at 3-5% TS concentration in combination with 50% seed sludge inoculation and mixing velocity at 120 rpm. Among pig slurry types, gestating sow waste slurry showed the highest biogas production probably due to higher the degradation rate than other types of pig waste slurry being affected by the feeds components.
Keywords
Anaerobic digestion; Biogas recovery; Pig slurry; Mixing velocity;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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