K. Stamatelatou, Democritus University of Thrace, Greece
G. Antonopoulou, Institute of Chemical Engineering Sciences, Greece
P. Michailides, Democritus University of Thrace, Greece
Biomass is a renewable source for energy production by means of bioprocesses such as fermentation/anaerobic digestion. Biohydrogen and biogas are gaseous fuels produced by these processes. In this chapter, the basic principles and various technological aspects affecting the efficiency of fermentation and anaerobic digestion processes are presented. The hydrogen and methane yields from various types of biomass are reported, and difficulties and future trends in the area of ...