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A Comparison Between Recycled Spent Zeolite and Calcite Limestone for Manganese Removal

  • Adarlene M. Silva
  • Rodrigo S. Figueiredo
  • Versiane A. LeaoEmail author
Conference paper
Part of the The Minerals, Metals & Materials Series book series (MMMS)

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.

Keywords

Spent zeolite Limestone Manganese Fixed-bed Sorption 

Notes

Acknowledgements

Funding provided by Vale and the agencies FINEP, CAPES, CNPq and FAPEMIG are acknowledged.

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Copyright information

© The Minerals, Metals & Materials Society 2017

Authors and Affiliations

  • Adarlene M. Silva
    • 1
  • Rodrigo S. Figueiredo
    • 1
  • Versiane A. Leao
    • 1
    Email author
  1. 1.Universidade Federal de Ouro PretoOuro PretoBrazil

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