Publicación:

Producción de hidrógeno por fermentación oscura a partir de estiércol de cerdo, mucílago de cacao y mucílago de café.

Resumen

Fossil fuels supply more than 80% of the world’s energy demand (Valdez-Vasquez & Poggi-Varaldo, 2009); this excessive consumption has led to a deficit in reserves and a higher concentration of greenhouse gases such as CO2, CH4 and NxO (Zuberi & Ali, 2015). In this situation, alternative sources of energy that offer energy security and a bio-based economy that projects a sustainable society have been investigated (Davis, Aid, & Zhu, 2017). The use of residual biomass such as pig manure (PM) and cocoa mucilage (CCM), through dark fermentation (DF) and anaerobic co-digestion, allows the production of bio-hydrogen (Hernandez, Rodriguez, & Andres, 2014). It is stand out that hydrogen has one of the highest calorific values (120MJ/kg) in relation to other fuels (Argun & Onaran, 2017). Countries such as Colombia have the capacity to generate bio-hydrogen from biomass, this based in the 922 thousand tons of animal and vegetable waste, this represents a 45% of the total residual products produced (DANE, 2017). Because of this, it is important to establish the potential of bio-hydrogen production from residual biomass, focused on the most important crops of the country, in order to close the local production cycles. This article studies the production of bio-hydrogen, using substrates as a PM, CCM and coffee mucilage (CFM). For this, an experimental design was develop to involve the factors related to coffee mucilage: cocoa (Rs M:C), substrate concentration and C/N ratio, under reproducibility and repeatability parameters. Likewise, brings information to contribute to overcoming the challenges that today are faced to give the DF studies in the laboratory a perspective of industrial scale and final application in the generation of clean energies (Sivagurunathan et al., 2016).