UNIVERSITÉ PAUL CÉZANNE, AIX MARSEILLE III - IMEP

ABSTRACT
Résultats et discussion. Chapitre 5: Disponibilité des substrats oléicoles
Morocco is a country which produces olive oil extensively and this industry within the
country is currently under huge expansion. The olive mill wastewater (OMW) which is being
dumped in the environment results in serious environmental pollution while olive cake (OC)
does have a proper disposal. In the present work, a new integrated process is described to
reduce the OMW produced by a triphasic system using the technique of pressing. Our process
consists in using olive cake as an absorbing agent of OMW produced and then to dry the
mixture in a greenhouse to get a final moisture of 10% (weight/weight). The optimal
conditions of mixing of OC with OMW were determined following various trials of mixing-
drying. The experimental performance of OC-OMW mixture drying in greenhouse was
evaluated. The drying air temperature varied from 10 to 53°C during drying. The mixture was
3 times dryer in the greenhouse than outside. Finally, a characterization of the dried mixture
by NMR analysis was performed to predict its future utilization and determine whether this
lignocellulosic material might be valued in the ways existing for crude olive cake.
Keywords: Olive cake, Olive mill wastewater, greenhouse, solar drying, NMR.
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