Abstract
: In this study, the removal of Mn2+ ions from waters by the adsorption method using ash obtained from a treatment plant sludge burning unit, which is treatment plant waste and mostly disposed of in landfill, was investigated. By determining the most suitable conditions for adsorption, adsorption kinetics, isotherms and thermodynamic values were determined. In the experiments, 63.9% removal efficiency was achieved using 10 g L-1 adsorbent concentration for 10 mg L-1 Mn+2 under optimum conditions. As a result of the research, it was determined that the adsorption proceeds according to the pseudo second degree reaction and abides by the Langmuir isotherm. The thermodynamic constants of ΔH°= -4.866 kj mol-1 and ΔS°= 21.44 j mol-1 were determined. As a result of this, the reaction was exothermic, spontaneous and random, and adsorption was physical adsorption. As a result of the study, sewage sludge ash can be used in the treatment of water containing low concentrations of Mn2+.
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