| Article ID | Journal | Published Year | Pages | File Type | 
|---|---|---|---|---|
| 10394876 | Bioresource Technology | 2011 | 5 Pages | 
Abstract
												⺠Small amounts of glycerin with cattle manure strongly increase biogas production. ⺠Applying ultrasound as a pre-treatment increased the production of biogas. ⺠Optimum proportion of glycerin added was 4% (mesophilic) and 6% (thermophilic).
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											Authors
												L. Castrillón, Y. Fernández-Nava, P. Ormaechea, E. Marañón, 
											