AI Article Synopsis
- * Co-digestion was performed in an induced bed reactor at 55 °C, with a special sonication treatment to enhance biodegradability.
- * The optimal mixture of 87% CM, 10% FW, and 3% Gly yielded significantly higher methane production (640 L CH4/kg VS) compared to using just CM and FW, indicating a successful enhancement in biogas output.
Article Abstract
The aim of the present research work was to boost biogas production from cattle manure (CM) by adding food waste (FW) and crude glycerin (Gly) from the biodiesel industry as co-substrates. For this purpose, different quantities of FW and Gly were added to CM and co-digested in an induced bed reactor (IBR) at 55 °C. Sonication pre-treatment was implemented in the CM+Gly mixture, applying 550 kJ/kg TS to enhance the biodegradability of these co-substrates. The best results were obtained with mixtures of 87/10/3 (CM/FW/Gly) (w/w) operating at an organic loading rate of 7 g COD/L day, obtaining 92% COD removal, a specific methane yield of 640 L CH4/kg VS and a methane production rate of 2.6L CH4/L day. These results doubled those obtained in the co-digestion of CM and FW without the addition of Gly (330 L CH4/kg VS and 1.2L CH4/L day).
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| http://dx.doi.org/10.1016/j.biortech.2013.02.076 | DOI Listing |
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