The oil extraction process from olive fruits produces a large quantity of liquid waste, so called as olive oil
mill wastewaters “Margines” which has a very strong polluting power resulting in high levels of COD (Chemical
Oxygen demand) high salinity and a strong phenolic compounds causing environmental pollution. The exploitation of
this waste without preliminary treatment is very limited considering its toxicity for soils and plants. In addition, the
richness of this effluent in organic compounds and especially on potassic elements represents an asset for its
agronomic valorization as a fertilizer. This alternative could be regarded as promising if it is practiced in a rational
way. Mineralization is the core of the symbiotic relation between soil - microorganism and plant. It is the generator of
mineral elements essential to the plants nutrition. Microorganisms are the main biotic actors in this process. The
product of the mineralization depends, on the first hand, on the biomass of the soil and on the second hand on the
quantity, nature and characteristics of the organic matter.The monitoring of the mineralization is therefore essential
after any input of organic matter with a view to its valorisation which effects are unpredictable.
It is within this framework that this work has been carried out aiming to study the effect of olive oil mill waste waters
spreading on the process of mineralization of organic matter and the soil content of carbon and mineral nitrogen.
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Posté Le : 30/08/2023
Posté par : einstein
Ecrit par : - Dakhli Raja
Source : Algerian Journal of Natural Products Volume 5, Numéro 1, Pages 393-404 2017-02-03