School of Environmental Studies, Jadavpur University, Kolkata-700 032, India E-mail: debasrees123@gmail.com Manuscript received online 27 January 2019, accepted 14 March 2019 Feed coals of studied thermal power plants contain several environmental concern elements (Cu, Cd, Cr, Pb). Enrichment in concentration of these elements in fly and bottom ash takes place during combustion. Combustion residues containing these elements are a potential source for ecological disrupt. Controlled emission

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... ology and discarding process of ashes in power plants are vital from environmental aspect. Appropriate and secure recycling of ashes is a good alternative of its disposal for financial moreover environmental benefit.