The Main proposal of our work is Utilization of Waste fly ash a byproduct of Coal based thermal power plants in removing of phenyl for rural development. The aim of this present work is to investigate the sorption potential of a modified and unmodified fly ash as a law-cost adsorbent material for the removal of phenyl from aqueous medium. In this regard fly ash is a very attractive option, because it is cheap, widely available and has good mechanical stability for handing purposes and employment in adsorption columns. The effect of various factors such as contact time, adsorbent dosage, PH, temperature and initial adsorbent. A concentration on the sorption process was investigated under batch equilibrium technique using UV/Vis Spectrometry. The result obtained showed that the capacity of fly ash for adsorption of Phenyl depends on the initial PH and concentration of solutions.