Organic loading rate effect in hydrogen production from crude glycerol in anaerobic fluidized bed reactor

摘要

Aiming at a sustainable energy future, the search for renewable energy sources has been intensified due to the gradual depletion of traditional energy sources from fossil fuels. In this case, renewable sources such as hydrogen and biodiesel have gained great importance as alternative pollution-free fuels for the future. Hydrogen stands out as a promising alternative to fossil fuels, being CO2 neutral, renewable and possessing the highest energy per unit mass as any known fuel. Biodiesel, in turn, has been increasingly used as a substitute for diesel in internal combustion engines. With the growing production of biodiesel, the glycerol generation - main byproduct formed - has intensified. In various other applications, glycerol can be used as substrate for fermentation in high value added compounds, as solvents organic acids and hydrogen. The fermentative hydrogen production from glycerol can be influenced, among other factors, by pH, temperature, hydraulic retention time and organic loading rate. In this context, the objective of this " "" study is to investigate the effect of organic loading rate in hydrogen production from crude glycerol by anaerobic fluidized bed reactor, in order to maximize the hydrogen yield and production rate.