Recovery and Synthesis of Al~(3+)/Fe~(3+) Polycationic-Nanocomposites from Acid Mine Drainage Treatment Process and their Respective Application in the Removal of Arsenic and Chromium Ions from Polluted Water Resources

摘要

As the quest for effective and affordable techniques for the treatment of wastewater continues, this study was therefore designed with the aim of recovering and synthesizing Al/ Fe polycationic-nanocomposite from authentic acid mine drainage (AMD) and explore its efficacy in the removal arsenic and chromium ions from an aqueous system. Batch experiments were used to fulfil the goals of this study. The Fe/Al matrix was recovered from coal mine drainage and was then used to synthesize a polycationic-nanocomposite through calcination and vibratory ball-milling. Obtained results revealed > 95 and 99 % removal efficiency for chromium and arsenic ions, respectively. In that regard, preliminary assays from this novel, double-edged and innovative study proved that valorisation of mine water by acceptable treatment and extraction of valuable minerals that has myriads of industrial applications such as contaminated water depollution is achievable.