Prediction of the location of fluoride pollution in Northern Algerian Sahara and the adsorption mechanism on the organic matrix (OM)

Abstract

This study aims to determine and manipulate the concentration of fluoride ions in groundwater (the northern Algerian Sahara) through the application of Geographic Information Systems (GIS). Water treatment using organic matrix (OM); the various factors affecting the removal efficiency (granular diameter diversity, temperature, contact time, - PH- adsorption dose) were changed. The physical and chemical analysis of the water showed that 62.19%. Of the well samples exceeded the limits of the World Health Organization (WHO). Standards in fluoride ion concentrations, where the high concentrations were mostly in The northeastern part, where the fluoride ions were treated through the process of physical adsorption between the highest concentration value of 2.78 mg / L and the matrix prepared from organic materials of animal origin (bovine bones), with very satisfactory results of 98%. The fluoride ion concentration Map could be used to identify and reduce health risks and mitigate groundwater pollution in the area, and on the other hand, water managers can use it to improve their water quality decisions by developing efficient and economical treatment mechanisms such as organic matter matrix used in this research.