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• W4220894859 endingPage "102715" @default.
• W4220894859 startingPage "102715" @default.
• W4220894859 abstract "Adsorption using different adsorbents is seen as the most effective method of treating wastewater contaminated by heavy metal ions such as copper ions. In particular, nano-adsorbents have emerged as the state-of-the-art materials for heavy metal removal because of their unique physicochemical properties. The aim of this study was to review the progress made in the last decade (2011−2021) on the removal of copper ions from aqueous environment. Relevant works were sourced and carefully analysed. The findings revealed that various classes of nano-adsorbents have been employed in the copper ion removal, among which magnetic nanoparticles (MNPs) (43.4%) was the most frequently used class, while aerogels (1.2%) are the least frequently used class of nano-adsorbents. Best results were obtained by the modification/functionalization of the nano-adsorbents with other materials, which resulted in an increase in their specific surface area. The majority of the nano-adsorbents showed high removal efficiencies (>90%), while the highest adsorption capacity (1937.5 mg/g) was obtained experimentally with the aerogel class. The adsorption isotherm fitted well with the Langmuir and Freundlich models, while the kinetic data provided the best correlation with the pseudo-second order kinetic model for most of the nano-adsorbents. The MNPs, in particular, showed high reusability, with most of them maintaining high efficiencies even after 3–5 rounds of regeneration. Effective treatment of copper-contaminated wastewater can therefore, be achieved with the use of nano-adsorbents as a novel, non-toxic, and cost-effective technique of adsorption. • A decade of studies on the removal of Cu 2+ ions from water using nano-adsorbents has been reviewed. • The nano-adsorbents for Cu 2+ removal were grouped into seven different classes. • Functionalization of the nano-adsorbents with other materials increases their surface area and subsequently, their uptake capacity. • Adsorption process parameters were also discussed." @default.
• W4220894859 created "2022-04-03" @default.
• W4220894859 creator A5015725361 @default.
• W4220894859 creator A5026890832 @default.
• W4220894859 creator A5049181781 @default.
• W4220894859 creator A5057777486 @default.
• W4220894859 creator A5061348364 @default.
• W4220894859 date "2022-06-01" @default.
• W4220894859 modified "2023-10-17" @default.
• W4220894859 title "Recent advances in nano-adsorbents for the sequestration of copper from water" @default.
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