Haroun Ali Adannou^{1, 2,}, Barka Ibrahim Mahamat³

The sizing of an anaerobic digester is generally a function of the main objectives pursued by anaerobic digestion, in relation to the available material, technological and economic resources, as well as the legislation in force. The main objective of the study of the sizing of an anaerobic digester is to optimize the treatment of organic waste and/or the production of methane. In this work we seek the theory of a technique for sizing a biodigester in order to store the biogas produced. To this end, we studied the design possibilities of different types of bioreactors that can be used for the production of biogas at the African Laboratory for Sustainable Development Research (AfricLab) and taken up at the laboratory of the Department of Physics and Chemistry, Ecole Normale Supérieure de N'djamena. Although the design technology is advanced, the aim of our work remains at the scale of a rudimentary study to be able to understand the simple ways and means of sizing and storing biogas, to do this an adapted table of the definitions and units of the parameters used in the equations for sizing was given. The laboratory work on the sizing of a biodigester and the storage time of the biogas produced required a small type of laboratory bioreactor of a few liters and fed with the real effluent considered. A ramp-up is carried out by following the yield of the biogas produced and measured according to the applied load. Based on this, we studied the different types of bioreactors in an industrial theoretical way and we presented them in the results and discussion section. This part has already been done on the work of BOUANIKA Nour el Imene & DJEDIA Arfa. Thus, a bibliographic synthesis is made for the production of this present scientific article.

sizing, anaerobic digester, storage, biogas, laboratory