KHELKHAL, Amina2024-02-132024-02-132018https://theses.univ-temouchent.edu.dz/opac_css/doc_num.php?explnum_id=1445http://dspace.univ-temouchent.edu.dz/handle/123456789/2240Evaluating waste in done thongh a set of operations to recycle the trash which is able to be produced again,that is called evaluation of the materiul ;more precisely our work is dosed on how to specify the evaluation of the material in on energetic way to produce thermic and slectrical energy ,there exist two major operaion ; first fermenting operation is related to vegetarian and animal waste, second combustion operation deals with solid and organic trash, in sun , this investigation of evaluating waste is regarded as a prominent solution to produce energy and economize non renewable energy use