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- W2371296114 abstract "Separation and recovery of Zn,Fe and Mn from acid mine drainage was researched by applying absorption with mechanically activated pyrite,oxidation-precipitation and sodium hydroxide neutralization.The mass concentration of residual Zn is 1.33 mg/L,and the removal rate of Zn is up to 99.08% when pH of the acid mine drainage is 1.83,the mass concentrations of Zn,total iron and Mn are 150,2 900 and 315 mg/L,respectively,the dosage of activated pyrite is 975 g in 10 L wastewater,reaction time is 20 min.In 10 L wastewater after removing Zn,the residual Fe and Mn are 97.96 mg/L and 290.55 mg/L,respectively,and the removal rates of Fe and Mn are 98.28% and 18.45%,respectively when pH of the wastewater is 6.92,airflow is 500 mL/min,reaction time is 2.5 h.X-ray diffraction(XRD) analysis shows that the products of oxidation-precipitation are Fe3O4 and α-FeOOH,in which the content of Fe is 52.73%.Then the residual Mn is 1.15 mg/L,and the Mn content in the sediment is 34.47% when pH of the wastewater is adjusted to about 11.01 with sodium hydroxide solution,and reaction time is 30 min.The effluent quality can meet the Chinese standards of wastewater discharge(GB 8978-1996) after pH of the Mn removing wastewater is adjusted to 7 with sulfuric acid." @default.
- W2371296114 created "2016-06-24" @default.
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- W2371296114 date "2011-01-01" @default.
- W2371296114 modified "2023-09-23" @default.
- W2371296114 title "Separation and recovery of Zn,Fe and Mn in acid mine drainage" @default.
- W2371296114 hasPublicationYear "2011" @default.
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