Informe técnico del concepto: determinación del porcentaje de sulfuro de hidrógeno (h2s) en biogas obtenido por la digestión anaerobia de excretas animales mediante la incorporación de un aditivo nanoestructurado de hierro.

Abstract

The research work presented covered specific objectives of the macroproject "Nanostructured additive to reduce H2S content in biogas produced by anaerobic digestion". The experimental development initially included the evaluation of the anaerobic digestion of a specific substrate (poultry, bovine and swine feces) recording the normal production of hydrogen sulfide (H2S), and once finished, the evaluation was performed again by adding different concentrations of a nanostructured iron additive with the purpose of improving the anaerobic digestion process and reducing the concentration of H2S in the biogas produced. After this, the substrate was characterized through the following physicochemical parameters: Total Solids (%p/p), Volatile Solids (%ST). Indicating the amount of water and biodegradable matter, and pH to establish the degree of acidity or alkalinity of the sample. After characterizing the substrate, the six experimental mini batch reactors were set up under mesophilic conditions (37°C), measuring mainly the production of biogas, methane and H2S for a period of 4 months. Finally, the production of biogas without and with iron nanostructured additive was recorded in order to identify the levels of H2S and the improvement in the quality of the biogas produced.