Study demonstrates copper oxide nanoparticle efficacy in removing nickel ions from water, suggesting a potential wastewater treatment method.
This study focused on the synthesis of copper oxide (CuO) nanoparticles by chemical precipitation method for the uptake of divalent nickel ions from aqueous media. The adsorption capacity was 15.4 mg/g under optimum conditions. The kinetic models were applied to find out the mechanism for the removal of nickel ions. The study indicated that the optimum conditions for nickel sequestration were pH = 7.0, initial concentration = 100 mg/L, nanoparticle dose = 0.2 g/L, contact time = 90 min, temperature = 26 ± 1 °C and rpm = 180. These results could be useful for the sequestration of Ni(II) ions from wastewater.
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Jain et al. (2020) studied this question.
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