A Review of the State of the Art of Biomethane Production: Recent Advancements and Integration of Renewable Energies

Francesco Calise, Francesco Liberato Cappiello, Luca Cimmino, Massimo Dentice d’Accadia and Maria Vicidomini
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Francesco Calise: Department of Industrial Engineering, University of Naples Federico II, 80125 Naples, Italy
Francesco Liberato Cappiello: Department of Industrial Engineering, University of Naples Federico II, 80125 Naples, Italy
Luca Cimmino: Department of Industrial Engineering, University of Naples Federico II, 80125 Naples, Italy
Massimo Dentice d’Accadia: Department of Industrial Engineering, University of Naples Federico II, 80125 Naples, Italy
Maria Vicidomini: Department of Industrial Engineering, University of Naples Federico II, 80125 Naples, Italy

Energies, 2021, vol. 14, issue 16, 1-43

Abstract: Anaerobic Digestion (AD) is a well-established process that is becoming increasingly popular, especially as a technology for organic waste treatment; the process produces biogas, which can be upgraded to biomethane, which can be used in the transport sector or injected into the natural gas grid. Considering the sensitivity of Anaerobic Digestion to several process parameters, mathematical modeling and numerical simulations can be useful to improve both design and control of the process. Therefore, several different modeling approaches were presented in the literature, aiming at providing suitable tools for the design and simulation of these systems. The purpose of this study is to analyze the recent advancements in the biomethane production from different points of view. Special attention is paid to the integration of this technology with additional renewable energy sources, such as solar, geothermal and wind, aimed at achieving a fully renewable biomethane production. In this case, auxiliary heat may be provided by solar thermal or geothermal energy, while wind or photovoltaic plants can provide auxiliary electricity. Recent advancements in plants design, biomethane production and mathematical modeling are shown in the paper, and the main challenges that these fields must face with are discussed. Considering the increasing interest of industries, public policy makers and researchers in this field, the efficiency and profitability such hybrid renewable solutions for biomethane production are expected to significantly improve in the next future, provided that suitable subsidies and funding policies are implemented to support their development.

Keywords: Anaerobic Digestion; biogas upgrading; mathematical modeling; thermal modeling; renewable energies; solar energy; photovoltaic systems (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (8)

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