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Chemical precipitation approach to the removal of heavy metals from wastewater for discharge into sanitary sewerageBy Ayodele Akinterinwa, Idris Adebayo
Abstract: NaOH, Ca(OH)2 and Na2CO3 were used as the precipitants in this study. The reaction time was set at 45 min, temperature at 50º C, pH at 9 for the hydroxides and 10 for the carbonate. Heavy metal ions precipitated includes; Pb2+, Cu2+, Mn2+, Zn2+ and Fe3+. NaOH exhibited highest precipitation for Cu2+ (99.2 %) and least for Zn2+ (75.2 %), Ca(OH)2 exhibited highest precipitation for Cu2+ (100 %) and least …
Published in Journal of Water Pollution & Purification Research · Vol. 6, Issue 1, 2019 · pp. 1–5 Read article →