Simulation of anaerobic digestion process to improve the efficiency of bioenergy produced from municipal solid waste

Farid Haghighatshoar¹

1) Department of Mechanical Biosystem Engineering, Renewable Energy, University of Mohaghegh Ardabili

IOI Code : XDHG-FGFHC
Publication : Green Management of Wastes and Biotechnology(gmbtuma.ir/2nd)
Abstract :
    Lifestyles in cities as well as in villages are changing rapidly due to modernization and industrial revolutions. As a result, the demand for pure energy has increased. Biogas is a renewable energy source that can be used to replace mainly non-renewable energy, fossil fuels. The anaerobic digestion process was simulated for the treatment of municipal solid waste (MSW) using Aspen Plus software. Using anaerobic digestion with enzymes, organic compounds were separated from indirect minerals such as plastics, metals, and textiles. These complex structures, such as proteins, carbohydrates, and fats, are hydrolyzed to their respective monomers, such as amino acids, glucose, and fatty acids. These hydrolyzed monomers are then converted to various volatile fatty acids (VFAs); VFAs are then converted to carbon dioxide, acetic acid, and hydrogen. An anaerobic digestion process model is demonstrated by Aspen Plus in RSTOIC and RCSTR reactors. The hydrolysis reaction takes place in the RSTOIC reactor; Amino acid degradation, acidogenesis, and estrogen reactions were investigated in the RCSTR reactor. The dry matter content of bio-sludge was 20 wt, which is mainly composed of VFA. Sensitivity analysis was performed to study the effect of residence time on the production of bio-sludge organic matter reduction. The rate of biological production increases with the length of stay at the site.

Keywords : municipal solid waste management simulation of anaerobic digestion process aspen plus and biogas