The biomethanisation of pig wastes produces a significant amount of biogas and reduces the organic load of the effluent. This effluent contains an important amount of nutrients that may be recuperated by coagulation-floculation, with cationic polymers. The optimization of this process was studied and the characteristics of the solid wastes produced determined. This product is a typical protein concentrate whose value is discussed, as well as possible reutilizations for feeding purposes.
Valorization of Solid Wastes from Biomethanisation of Pig Breeding Effluents
E. A. Duarte, B. Mendes, J. S. Oliveira; Valorization of Solid Wastes from Biomethanisation of Pig Breeding Effluents. Water Sci Technol 1 November 1992; 26 (9-11): 2097–2100. doi: https://doi.org/10.2166/wst.1992.0670
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