World Journal of
Pharmaceutical and Life Sciences

COMPARATIVE STUDY OF DIFFERENT DEPOLLUTION TECHNIQUES AND THE IMPACT OF PHYTOREMEDIATION ON THE REHABILITATION OF SOILS POL-LUTED BY HEAVY METALS: (ARTICLE REVIEWED)

Redouane Tarik*, Noureddine EL Moualij, Touriya Zair, Mohamed Tarik, Jalila El Amri

ABSTRACT

Because of pollutants spread by industry, mining activity or intensive agriculture such as Zn, Pb, hydrocarbons, Cd, Hg, etc. soils become uncultivable or uninhabitable for future generation. Heavy metals are not biodegradable and therefore persist in the environment for long periods. Moreover, they are continually added to the soil by vari-ous activities. The accumulation of heavy metals in the environment can therefore affect the health of humans and animals. At the microscopic scale, heavy metals also have adverse effects on bacterial populations, which is not without consequences on the functioning of the ecosystem. The development of effective techniques to decontami-nate polluted sites has become essential. Different soil remediation techniques exist. One of these techniques is phytoremediation which exploits the properties of some plants to accumulate large quantities of heavy metals. Phytoremediation has attracted attention as a potential alternative to traditional methods of depollution (thermal, physicochemical) due to lower cost and minimal soil disturbance, so a study is needed to evaluate different soil remediation techniques. To choose the best technology (s) for polluted soils and the implementation of innovative solutions to overcome the problem of soil contamination by heavy metals and therefore the rehabilitation of these soils.

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