Oil-extracted Chlorella vulgaris biomass and glycerol bioconversion to methane via continuous anaerobic co-digestion with chicken litter

José Carlos Meneses-Reyes, Guadalupe Hernández-Eugenio, David H. Huber, Nagamani Balagurusamy and Teodoro Espinosa-Solares

Renewable Energy, 2018, vol. 128, issue PA, 223-229

Abstract: The objective of this work was to evaluate the performance of mesophilic continuous anaerobic co-digestion 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.

Keywords: Oil-extracted microalgae; Glycerol; Biodiesel residuals; Mesophilic; Specific methanogenic activity (search for similar items in EconPapers)
Date: 2018
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Citations: View citations in EconPapers (5)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:128:y:2018:i:pa:p:223-229

DOI: 10.1016/j.renene.2018.05.053

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