A short review of comparative energy, economic and environmental assessment of

Abstract

Biogas can be utilized as a source of heat or power in single generation, cogeneration and multi-generation systems for production of useful commodities as power, heat or chemicals like hydrogen and methane. Different technologies can be employed for converting biogas as an energy carrier into final products. Besides, some strategies can be made for recovering the heat after the power generation processes for different purposes such as heating, cooling or even production of hydrogen or fresh water. Gas engines, gas turbines and solid oxide fuel cells (SOFCs) are the common technologies for power generation from biogas. This study investigates the novel biogas-based energy systems and assesses their energetic performance via efficiency evaluation as well as their environmental and economic performances.