Valorization of agro-industrial waste by bio-process aerobic composting

The results of physicochemical analyzes of the compost obtained from food waste after 6 months of composting highlight: - a value of ph (7.6) in the optimum margin for bacterial growth from 6 to 7.5 and fungi from 5.5 to 8.0. - an enrichment of compost in organic carbon (37.70%) and in organic matter (64.99%) - an enrichment of compost in humic substances (265.728 g / kg). - a transformation of aliphatic structures in aromatic structures more stable and condensed. - a very low concentration of heavy metals which are infinitely far from the most severe standard even if metallic elements were considered. spectroscopic characterizations were carried out and show that the obtained compost is mature and stable. the amount of nutrients (p2o5 + k2o + cao + mgo) is 10.57%. in light of these results,the obtained compost is a stable,hygienic,rich product in fertilizing elements (p2o5+ k2o + cao + mgo),in organic matter and humic substances. this finding can open the way for agricultural development. © 2017,university of mohammed premier oujda morocco.