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Abstract:
The adsorption characteristics of CuO NPs in soil were investigated by static adsorption experiments. The effects of CuO NPs initial concentration, soil with different properties and pH on soil adsorption of CuO NPs were explored, and the interactions between co-existing organic pollutants (phenanthrene) and CuO NPs and the effects of phenanthrene on soil adsorption of CuO NPs were clarified. The results showed that the adsorption of CuO NPs in soil was in accordance with the pseudo-secondary reaction kinetic model. The dissolution and stabilization of CuO NPs by humic acid and organic matter resulted in low adsorption of CuO NPs by soil. The lowest adsorption of CuO NPs by soil occurred at neutral pH. The presence of phenanthrene occupied some adsorption sites and thus reduced the adsorption of CuO NPs by soil, and the equilibrium adsorption of CuO NPs at initial concentrations of 30 and 50mg/L decreased by 37.3% and 24.7%, respectively, but the presence of phenanthrene did not affect the adsorption process of CuO NPs. © 2023 Chinese Society for Environmental Sciences. All rights reserved.
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China Environmental Science
ISSN: 1000-6923
CN: 11-2201/X
Year: 2023
Issue: 8
Volume: 43
Page: 4121-4126
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ESI Highly Cited Papers on the List: 0 Unfold All
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30 Days PV: 3
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