Evaluation du risque de pollution du sol par le plomb et le zinc issus de la digue des rejets stériles du complexe minier de Kherzet Youcef (Ain Azel. W. Sétif)

Abstract

The purpose of this work is to evaluate the environmental impact of the dam of the sterile discharges of the Kherzet Youcef mining complex ( Ain Azel wilaya de Sétif). This complex was used for the reatment of Kherzet Youcef Pb-Zn polymetallic ore prior to closure and currently processes ore from the Chaabet El Hamra mine. The geochemical analysis of the samples from the dike and the soils by fluorescence X and flam atomic absorption spectroscopy allowed the evidencing of a soil pollution surrounding the dyke by zinc and lead, in addition to the presence Sulfur in releases poses a potential risk for producing acid mine drainage pollution. In order to reduce the risk of soil pollution, the techniques for adding clays and phosphates to waste have been proposed.