Jose Carlos Meneses-Reyes1, Guadalupe Hernandez-Eugenio1, David H. Huber2,3, Nagamani Balagurusamy4, Teodoro Espinosa-Solares1*
1Universidad Autonoma Chapingo, Posgrado en Ingeniería Agrícola y Uso Integral del Agua, Laboratorio de Bioprocesos, Chapingo 56230, Estado de Mexico, Mexico
2West Virginia State University, Gus R. Douglass Institute, Institute, WV 25112-1000, USA
3West Virginia State University, Department of Biology, Institute, WV 25112-1000, USA
4Universidad Autonoma de Coahuila, Escuela de Ciencias Biologicas, Laboratorio de Biorremediacion, Torreon 27000, Coahuila, Mexico
*t.espinosa.s@taurus.chapingo.mx
The objective of this work was to evaluate the performance of mesophilic continuous anaerobic codigestion using oil-extracted microalgae (M) and glycerol (G) in co-digestion with chicken litter (CL). The process included the starting up and stabilization of continuous anaerobic bioreactors using CL as a feedstock and the corresponding adaptation to M-CL and M-G-CL feedstocks. The treatments were selected based on a previous report of our research team on Biochemical Methane Potential (BMP) evaluation, taking in consideration only the best M-G-CL feedstock ratios. The performance was evaluated by the Specific Methanogenic Activity (SMA); the best response (270.0 mL CH4 gVS added-1) was obtained with a triple co-digestion M-G-CL 30:3:67, which was 39.0% above the CL treatment. These findings have shown that the two main residuals from microalgae biodiesel production (G and M) can be used as a feedstock to improve methane production through anaerobic digestion.
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