Abstract
The current work initially investigated the manganese removal by sorption in a recycled spent zeolite (faujasite) used in the oil industry. Equilibrium adsorption was described by the Langmuir isotherm (r2 > 0.99) with a maximum loading of 10.9 mg/g-zeolite. The performance of the spent zeolite was compared with that of limestone (a low cost sorbent). In this latter case, equilibrium sorption was also modelled using the Langmuir isotherms with 1.03 mg/g-limestone as maximum uptake. Fixed-bed sorption on both materials was also studied and solid loadings increased with the aqueous metal concentration. The Thomas model was selected to describe the breakthrough curves and showed good correlation with the experimental data for both samples and indicated a maximum solid uptake of 0.33 mg/g-solid in faujasite and 0.03 mg/g in limestone.
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Funding provided by Vale and the agencies FINEP, CAPES, CNPq and FAPEMIG are acknowledged.
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© 2017 The Minerals, Metals & Materials Society
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Silva, A.M., Figueiredo, R.S., Leao, V.A. (2017). A Comparison Between Recycled Spent Zeolite and Calcite Limestone for Manganese Removal. In: Meyers, M., et al. Proceedings of the 3rd Pan American Materials Congress. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-319-52132-9_11
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DOI: https://doi.org/10.1007/978-3-319-52132-9_11
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