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- W2160943891 abstract "In this paper, fly ash modified by hydrochloric acid was used as adsorbent to remove Cr(III) in aqueous solution. Adsorption isotherms and kinetics models were analyzed, the thermodynamic constants were calculated on the basis of data achieved. Optimal operation conditions were attained through groups of orthogonal experiments, and the effect was compared to that of active carbon. The results showed that modified fly ash was effective on Cr(III) removal. The adsorption process fit Langmuir and Freundlich isotherm equations, with correlation coefficients R2 0.9988 and 0.9590 respectively, the maximum adsorption capacity was 16.5017 mg/g in theory. Pseudo-second order kinetics model was better to reveal the dynamic adsorption characteristics than pseudo-first-order kinetics model did, the adsorption process could proceed spontaneously. Concentrations of Cr(III) was the most important factor for Cr(III) removal shown in orthogonal experiments, the highest efficiency was 72.04%. With acceptable adsorption capacity and lower cost, the adsorption system with modified fly ash was of more advantages in practical application." @default.
- W2160943891 created "2016-06-24" @default.
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- W2160943891 date "2011-05-01" @default.
- W2160943891 modified "2023-09-25" @default.
- W2160943891 title "Notice of Retraction: Cr(III) Removal with Fly Ash Modified by Hydrochloric Acid" @default.
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- W2160943891 doi "https://doi.org/10.1109/icbbe.2011.5780985" @default.
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