Proposal for a simple method for calculating biogas production in natural treatment systems for livestock wastewater

Abstract

This paper proposes a simple method for estimating the production of biogas (CH4–CO2) obtained from the treatment of wastewater from livestock farms in anaerobic digestion chambers of natural treatment systems. For this, the use of a mathematical model based on two biological reactions of anaerobic decomposition is proposed; one for the process of acetogenesis, considering Monod growth, and another for methanogenesis, considering Haldene growth. In addition, temperature T and pH are considered as factors affecting biological growth in anaerobic digesters.