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Title: | Assessment of two-phase olive mill solid waste and microalgae co-digestion to improve methane production and process kinetics |
Authors: | Fernández Rodríguez, M. J.; Rincón, Bárbara ![]() ![]() ![]() |
Keywords: | Microalgae kinetics. olive mill solid waste co-digestion biomethane biochemical methane potential |
Issue Date: | 2014 |
Publisher: | Elsevier |
Citation: | Bioresource Technology 157: 263- 269 (2014) |
Abstract: | Olive mill solid waste (OMSW) is a pollutant waste coming from olive oil elaboration by the two-phase centrifugation system. OMSW has a high organic matter content and unbalanced carbon to nitrogen (C/N) ratio, 31/1, which avoids obtaining high methane yields in the anaerobic digestion of this waste. In the present study a microalgae, Dunaliella salina, was employed as co-substrate for the OMSW anaerobic digestion in order to decrease the C/N ratio and increase its biodegradability. Different co-digestion mixtures (C/N ratios) were studied. The increase of D. salina from 25% to 50% in the co-digestion mixture clearly increased the biodegradability of the sole substrates. The highest biodegradability was found for the co-digestion mixture 50% OMSW-50% D. salina. Nevertheless, the maximum methane production, 330mLCH4/gVSadded, and the highest methane production rate were obtained for the co-digestion mixture 75% OMSW-25% D. salina, keeping a C/N ratio near to 26.7/1. © 2014 Elsevier Ltd. |
URI: | http://hdl.handle.net/10261/114850 |
DOI: | http://dx.doi.org/10.1016/j.biortech.2014.01.096 |
Identifiers: | doi: 10.1016/j.biortech.2014.01.096 issn: 0960-8524 |
Appears in Collections: | (IG) Artículos |
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