Equilibrium and kinetic modeling of the adsorption: evaluating the performance of adsorbent in softening water for irrigation and animal consumption

Autores

  • Aline Sales Ferreira Department of Chemistry - State University of Ceará (UECE-CECITEC).
  • Antonébia Alves Mota Department of Chemistry - State University of Ceará (UECE-CECITEC).
  • Aldayr Melo Oliveira Department of Chemistry - State University of Ceará (UECE-CECITEC).
  • Francisco Idelbrando Lima Rodrigues Department of Chemistry - State University of Ceará (UECE-CECITEC).
  • Sara Nóbrega Pacífico Department of Chemistry - State University of Ceará (UECE-CECITEC).
  • José Eduardo da Silva Department of Chemistry - State University of Ceará (UECE-CECITEC).
  • Bruno Tavares de Oliveira Abagaro Department of Physics - State University of Ceará (UECE-FAFIDAM).
  • Gilberto Danta Saraiva Department of Physics - State University of Ceará (UECE-FECLESC).
  • Raimundo Nonato Pereira Teixeira Regional University of Cariri, Department of Biological Chemistry.
  • Vicente de Oliveira Sousa Neto Department of Physics - State University of Ceará (UECE-FECLESC).

Palavras-chave:

adsorption, mechanism, kinetic, hardness.

Resumo

Coconut bagasse, an agricultural solid waste was used as biosorbent for the removal of hardness after alkalized treatment. The adsorption of Ca(II) was studied at pH 6.8. The analysis of the isotherms by the nonlinear model showed that the experimental data were best described by the Temkin model, with lower χ2 value was obtained. The maximum adsorption capacities by Langmuir model was 30.20 mg.g-1.The results using non linear and linear method shown low discrepancy between them to equilibrium study. The results show that the CHA adsorbent can be applied for the removal of Hardness from wastewater.

Publicado

08-01-2020

Edição

v. 11 n. 6 (2019): Revista Virtual de Química

Seção

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