In-vessel composting under air pressure of organic fraction of municipal solid waste in Azemmour, Morocco

This study aims to evaluate the performance of laboratory-scale in-vessel composting bioreactor for the Organic Fraction of Municipal Solid Waste treatment in Azemmour, Morocco. The bioreactor was specially designed and used for this study, and it was operated semicontinuously under 0.6 bar pressure. The evaluations studied included the operational indices, the compost maturity indices and the quality of the final compost. Obtained results showed that organic fraction of municipal solid waste could be composted successfully in 12 days. Moreover, high CO2 generations involve high temperature and high internal air pressure change, revealing vigorous microbial activity. The final compost was satisfactory for its agricultural application.