Removal of Heavy Metals from Aqueous Solutıon Using Fly Ash: Çan Thermal Power Plant, NW Turkey as a Case Study
This study was conducted to investigate use of fly ash created by fluidized bed combustion Can Thermal Power Plant for the removal of heavy metals from aqueous solutions as a low-cost adsorbent. The adsorption capacity of metal ions (Cd, Co, Cr, Cu, Ni, Mn, Pb and Zn) from aqueous solution onto coal fly ash was studied in batch experiments, which were carried out at room temperature to investigate the efficiency of the adsorbent for removing selected metals. The highest adsorption capacities of fly ash were determined for Cu and Cd metals, with values of 67.29% and 53.66%, respectively. The following metal removal capacity of fly ash was determined: Cu > Cd > Pb > Zn > Cr > Co > Mn > Ni. The ash originating from coal combustion thermal power plant may be considered a viable adsorbent for metal ions from aqueous solutions at neutral pH conditions and with small amounts of fly ash.
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