The upgrading of biogas coupled with centrate treatment was evaluated in an outdoors photobioreactor interconnected to an absorption column of CO2 and H2S from September to December 2016.
The maximum recorded CH4 concentration in the biomethane was 94%, with total removal of H2S and removal efficiencies of CO2 ranging from 70% to 90% depending on the environmental conditions.
D. Marín, E. Posadas, R. Lebrero, R. Muñoz
Departamento de Ingeniería Química y Tecnología del Medio Ambiente. Universidad de Valladolid. C/ Real de Burgos, s/n, Sede Doctor Mergelina. CP 47011 - Valladolid