Removal of heavy metals from samples of residual sludge
by Jose Abrego
International Journal of Environment and Pollution (IJEP), Vol. 6, No. 2/3, 1996

Abstract: Nitric acid leaching processes were evaluated for removal of heavy metals from samples of residual sludge from an industrial and municipal wastewater plant. The study showed that an acid:water ratio of 1:1 and a nitric acid concentration of 2 mol 1⁻¹ gave efficient removal of 86.7%, 100% and 100% of copper, nickel and arsenic.

Online publication date: Wed, 16-Sep-2009

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