Studies on the effect of supplements for improving the kinetics of anaerobic digestion

Abstract

It is a very well-known fact that in recent times non-renewable energy-producing industries are in a state of crisis. The increased exploitation of these fossil fuels increases the likelihood of causing environmental pollution, which affects both plant and animal life. In this context, the development and application of technology for producing energy from renewable sources such as wind, sun, biomass, and waste appears promising for the advancement of sustainable or green energy. Anaerobic digestion (AD) in biogas facilities has grown in popularity over the last 20 years due to its ability to produce sustainable energy from a wide range of organic materials. Anaerobic digestion (AD) converts biomass into biogas. The nutrient status of the AD substrate, on the other hand, frequently influences how well it performs. In this study, a few substrate supplements were chosen to enhance the biogas production; MgO, FeCl3,Pectin, FeSO4, and silica gel were used as supplements, chosen based on literature review [1]. A kinetic study of the process was used to assess the potential impact of the supplements on the AD process. MgO, FeCl3 were found to improve the ultimate methane yield and kinetic parameters in all three digesters with different total solid concentrations. Finally, the final batch of experiments was run with the appropriate amounts of all three supplements, and the process produced better results.