Heavy metals persistence in the environment has always been one of the most important research topics. Mining has undeniably contributed to the country's economic development significantly. However, like any mining activity it has generated a sharp increase in the levels of toxic heavy metals in the environment [1-3]. Northern Tunisia is an important metallogenic province that used to produce about 2.3 million tons (MT) of lead, 2 MT of zinc and 0.8 MT of fluorine [4]. After the mine's closure, several environmental problems surfaced and mining site construction was abandoned with no planned perspectives. The mere heavy metal pollution was not only degrading the