Author/Authors :
Makan، Abdelhadi نويسنده Water and Environment Laboratory, Chemistry Department, Faculty of Science, University Chouaib Doukkali, P.O. Box 20, El Jadida 24000, Morocco , , Assobhei، Omar نويسنده BIOMARE Laboratory, Biology Department, Faculty of Science, University Chouaib Doukkali, P.O. Box 20, El Jadida, 24000, Morocco , , Mountadar، Mohammed نويسنده Water and Environment Laboratory, Chemistry Department, Faculty of Science, University Chouaib Doukkali, P.O. Box 20, El Jadida 24000, Morocco ,
Abstract :
This study aimed to evaluate the effect of initial moisture content on the in-vessel composting under air pressure of
organic fraction of municipal solid waste in Morocco in terms of internal temperature, produced gases quantity,
organic matter conversion rate, and the quality of the final composts.
For this purpose, in-vessel bioreactor was designed and used to evaluate both appropriate initial air pressure and
appropriate initial moisture content for the composting process. Moreover, 5 experiments were carried out within
initial moisture content of 55%, 65%, 70%, 75% and 85%. The initial air pressure and the initial moisture content of
the mixture showed a significant effect on the aerobic composting. The experimental results demonstrated that for
composting organic waste, relatively high moisture contents are better at achieving higher temperatures and
retaining them for longer times.
This study suggested that an initial moisture content of around 75%, under 0.6 bar, can be considered as being
suitable for efficient composting of organic fraction of municipal solid waste. These last conditions, allowed
maximum value of temperature and final composting product with good physicochemical properties as well as
higher organic matter degradation and higher gas production. Moreover, final compost obtained showed good
maturity levels and can be used for agricultural applications.
