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Waste from poultry droppings in Had Soualem is valuable because it is rich in organic molecules that break down easily. One way to use this waste is by making methane from it. This helps reduce its volume and its impact on the environment. We are studying how mixing this waste with green waste can assess the effect of co-digestion with a green waste co-substrate in batch mode, under mesophilic conditions at 37 °C and using an infinitely mixed laboratory digester continuous stirred tank reactor (CSTR) with a capacity of 1.5 liters. During this process, the parameters pH, TOC, NTK, COD, alkalinity, and conductivity at the digester were monitored at the laboratory scale, and volatile fatty acids were modified to promote the bioconversion of biomass into methane. When everything works just right, the reactor stays stable, and it can make up to 70% methane, with only 1 to 1.5% hydrogen sulfide. This shows that combining poultry waste with green waste could be a good way to deal with these types of organic waste, turning them into something valuable and making the process more appealing. [ABSTRACT FROM AUTHOR]