Sorption of lead on modified silica obtained from chrysotile: isotherms application

Authors

  • Edson Cavalcanti da Silva Filho Universidade Federal do Piauí
  • Antônio Wuiston Martins Fortes Universidade Federal do Piauí
  • Luizângela da Silva Reis Universidade Federal do Piauí
  • Maria Rita de Morais Chaves Santos Universidade Federal do Piauí
  • Luiz de Sousa Santos Júnior Universidade Federal do Piauí
  • Maria Gardênnia da Fonseca Universidade Federal da Paraíba

DOI:

https://doi.org/10.14295/cs.v1i1.4

Keywords:

lead, adsorption, silica

Abstract

A silica was modified with three alcoxysilanes with different quantities of nitrogen, whose the silica obtained from chrysotile acid leaching. The modified silicas were applied in lead removal from aqueous solution, obtained the following capacities: 1.41, 0.78 e 0.60 mmol g-1 for the materials containing 3, 1 and 2 nitrogen in organic chains, respectively. The isotherms were adjusted using different models, and each material showed affinity to a model. The interactions were favorable and spontaneous from Freundlich model and Gibbs free energy, respectively.

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Published

2010-04-01

How to Cite

Silva Filho, E. C. da, Fortes, A. W. M., Reis, L. da S., Santos, M. R. de M. C., Santos Júnior, L. de S., & Fonseca, M. G. da. (2010). Sorption of lead on modified silica obtained from chrysotile: isotherms application. Comunicata Scientiae, 1(1), 15. https://doi.org/10.14295/cs.v1i1.4

Issue

Vol. 1 No. 1 (2010)

Section

Original Article

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