If we compare the test anaerobic digestion of two substrates,
we note that for the substrate resulted in the production of
biogas which% CH4 is greater than 70% [8]. This was
confirmed by the flammability of biogas produced. It was also
noted that the sludge treatment plants are more productive in
the landfill biogas. We realized this fact, a comparison experiment between the two substrates digestion which was
launched in the same operating conditions two anaerobic
digestion tests, one with the sewage sludge and other organic
waste with the landfill. We followed the variation of CDO and
we measured the volume of biogas each bottle. Fig. 7 shows
the degradation of the two substrates and indicates that both
substrates digestion are biodegradable and can be valuable in
a renewable and inexhaustible.