Technical Note: Fluoride Removal Studies in Water Using Natural Materials

Excess fluoride in water causes health hazards to the natural environment. The removal of fluoride was attempted using natural materials such as red soil, charcoal, brick, fly-ash and serpentine. Each material was set up in a column for a known volume and the defluoridation capacities of these materials were studied with respect to time. This study reveals that red soil has good fluoride removal capacity followed by brick, fly-ash, serpentine, and charcoal.