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The application of anaerobic digestion, from waste streams that currently have no use, can be utilized for bioenergy production. The present work objective was to evaluate the mixing effect in the biodegradability of residues from the Cuban sugar industry such as bagasse, press mud and vinasse using a mixture design. Methane yield and kinetic process were also evaluated using two different kinetic models: first order model and Gompertz model. The results showed that press mud had the higher methane yield (252 mLCH4/gVS) mean while bagasse had the lowest value (170 mLCH4/gVS). All substrates mix resulted an increase in methane yield up to 23% compared to the expected yield calculated as individual fractions potential methane. This behavior demonstrate a significant synergistic effect. The kinetic results showed that vinasse had the best results. [ABSTRACT FROM AUTHOR]

Today the world currently suffers from serious pollution and health problems, due to the lack of adequate treatment of organic waste generated by the natural activities of living beings, including bovine manure, sewage sludge and food waste; nevertheless, these residuals when they are co-digested anaerobically, offer benefits such as obtaining biogas, harmless biofertilizers and reducing environmental damage and human health. This research, with stirred reactors on a laboratory scale, these residuals were co-digested anaerobically in different proportions. The results obtained shows, in the first instance, that the process is justified. because it is obtained an energy potential of between 1,32-8,92 MJ/kg of total solids, more than with the burning of 1 kg of manure; and on the other hand, establish the limits of the organic load and observe the growth of the energy potential of the process, due to the possible synergic effect that the mixture offers on food waste. [ABSTRACT FROM AUTHOR]

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Copyright of Revista ION is the property of Universidad Industrial de Santander and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)