This study is to investigate the removal efficiency of Cr^(+6) from waste water by using the coprecipitation phenomena. Experiments were performed mainly by using the jar tester at pH range of 8 to 11. Cr^(+6) concentration was 1㎎/ℓ with differen...
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다국어 초록 (Multilingual Abstract)
This study is to investigate the removal efficiency of Cr^(+6) from waste water by using the coprecipitation phenomena. Experiments were performed mainly by using the jar tester at pH range of 8 to 11. Cr^(+6) concentration was 1㎎/ℓ with differen...
This study is to investigate the removal efficiency of Cr^(+6) from waste water by using the coprecipitation phenomena.
Experiments were performed mainly by using the jar tester at pH range of 8 to 11. Cr^(+6) concentration was 1㎎/ℓ with different concentrations of ammonium ferrous sulfate, which were 5 to 100㎎/ℓ as Fe^(+2).
Following conclusion were obtained from the results of this study.
Removal efficiency was highly improved compared to the conventional hydroxide precipitation treatment. The optimum conditions for Cr^(+6) removal is at pH range of 9 to 10 and over the ratio(㎎/ℓ Fe^(+2)㎎/ℓCr^(+6)) of 5.
The added So₄^(-2) at pH range of 5 to 6 improved on the coprecipitation of Cr^(+6). The added Ca^(+2) at pH range 10 to 11 improved on the coprecipitation of Cr^(+6).