LEACHING STUDIES OF FLUORIDE FROM FLY ASHESM.K. BHATNAGAR, PRACHI BHATNAGAR, ASHOK TRIPATHI AND AVINASH KUMARAbstract Coal is a major source of energy and its consumption is increasing day by day. When coal is burnt in thermal power plants, Fly ash is produced as a bye product. Fly ash is thus an industrial waste generated from thermal power plants. It constitutes 80-85 percent of the total ash produced in the power plant. For fly ash disposal about 35,000 hectare of land is required in India. One of the main problems in disposing of big quantities of fly ash is the possible leaching of different pollutants, including fluoride. A thorough investigation regarding leaching of fluoride from fly ashes is much essential to know the impact of fluoride due its leaching from fly ash to ground water as well as surface water. In the present study leaching studies have been carried out on fly ash, bottom ash, pond ash and weathered ash of Amarkantak thermal power station (ATPS) Chachai and Sanjay Gandhi thermal power station (STPS) Birsinghpur district Shahdol Madhya Pradesh, India. The amount of fluoride released in different experiment has been evaluated. The different samples of ashes have been collected and analyzed for some physico chemical parameters and fluoride content
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