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http://dx.doi.org/10.11109/JAES.2013.19.2.191

Anaerobic Co-digestion of Dairy Manure and Crude Glycerin  

Lee, Sae-Min (Department of Animal Science and Technology, Konkuk University)
Lee, Sang-Rak (Department of Animal Science and Technology, Konkuk University)
Publication Information
Journal of Animal Environmental Science / v.19, no.2, 2013 , pp. 191-196 More about this Journal
Abstract
In this study, the mixture ratio included 20% (GLY 20), 40% (GLY 40), and 60% (GLY 60) based on VS with the control group (GLY 0) with no crude glycerin added. Maintaining stable pH, GLY 20 and GLY 0 showed the highest total output of biogas (1.24 L/L/d) and methane(0.78 L/L/d) as its volatile solids reduction rate was 53.56%. In case of GLY 40 and GLY 60, their pH was rapidly reduced after seven days of the study, so that their anaerobic digestion was all stopped.In the results of the study, it is desirable to add crude glycerin less than 20%, and it would be necessary to have the future researches on more detailed organic loading rate of each ratio, and analysis on economic feasibility.
Keywords
Dairy manure; Crude glycerin; Biogas production; Methane production rate; Volatile solids reduction rate;
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