Utilization of Fly Ash in the Removal of Orthophosphate from Water Samples

The ability of different fly ash samples to remove orthophosphate from standard phosphate solutions and from wastewater samples is reported. The results of studies to determine the temperature, the amount of fly ash, and the time necessary for maximum orthophosphate removal are included. The mode of action, whether by absorption onto the fly ash or by a precipitation reaction with one or more of the soluble components from the fly ash, is also investigated. The chemical compounds present in the fly ash, as determined by x-ray diffraction, are also included