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- W2360121927 abstract "The objective of this study is to seek for a low cost adsorbent material to remove heavy metal ions from aqueous solution. As a high volume agricultural waste, peanut shells were modified with KMnO4 to produce biomass adsorbent. The adsorption capacity of the modified adsorbents to remove cadmium(Ⅱ) and plumbum(Ⅱ) from aqueous solution were investigated in different conditions. Results showed that the optimum initial solution pH values for adsorption were 4.5 for the lead and 6.5 for cadmium, respectively. The adsorption could reach equilibrium in about 18 hours. The maximum adsorption capacity was 104.75 mg·g-1 for Pb2+ and 43.11 mg·g-1 for Cd2+. In addition, the competitive adsorption of Pb2+ and Cd2+ on the modified peanut shells was investigated and the results showed the adsorption capacity of Pb2+ or Cd2+ was markedly restrained with the coexisting ions in the aqueous solution. Comparing with the sole ion adsorption results, the competitive adsorption had made adsorption capacity of Cd2+ and Pb2+ fall about 88.47% and 20.80% respectively. In the competitive adsorption test, the adsorption capacity of Pb2+ was about 5~6 times of Cd2+, which showed a preference for Pb2+ and indicated the adsorption selectivity sequence of the modified peanut shells for these two heavy metals is Pb2+Cd2+." @default.
- W2360121927 created "2016-06-24" @default.
- W2360121927 creator A5067021896 @default.
- W2360121927 date "2011-01-01" @default.
- W2360121927 modified "2023-09-23" @default.
- W2360121927 title "Adsorption of Cd~(2+) and Pb~(2+) from Aqueous Solution by Modified Peanut Shells" @default.
- W2360121927 hasPublicationYear "2011" @default.
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