Abstract
This work presents the possible recovery and reuse, after treatment, of an iron-based sludge from wastewater treatment station in the removal of cadmium in aqueous solution. The sludge sustained a heat treatment (100 and 500°C) and was characterized by XRD, FTIR, BET and SEM witch shown an evolution in the morphology and the structure of the materials indicating the effect of the heat temperature. The material was then applied to remove cadmium in aqueous solution. The results show that the raw material gives the best results with a maximal adsorption capacity of 70.92 mg/g at pH=5.This study has shown us that it is possible to recover and reuse effectively sludge, from wastewater treatment plant, considered as a solid waste, in the removal of a pollutant such as cadmium in aqueous solution.
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