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The process of separating nickel from the waste of thermal power stations has a positive effect on the environment and has a good economic return. . In this study, nickel was separated from the wastes of the South Baghdad thermal power station by using phosphoric acid. The investigation studied the influence parameters ( concentration of acid, temperature, time, size of waste granules and acid to the waste quantity ratio) on separation process of nickel. The best conditions in the separation process were obtained when the concentration of acid is 5 molarities, the temperature 50 °C, the duration time of separation is 4 hours, the acid phosphoric to the waste quantity ratio is 30, and the size of the waste granules is 150μm. The percentage of nickel that can be separated from the wastes of south Baghdad thermal power station reaches 81%.

STUDYING THE EVALUATION OF THE EFFICIENCY OF PHOSPHORIC ACID ON THE SEPARATION OF NICKEL FROM THE WASTE OF SOUTH BAGHDAD THERMAL POWER STATION