Adsorption kinetics for the removal of chromium (VI) from aqueous solutions using acerola (Malpighia glabra L.) seeds

Authors

  • Jéssica Cristian Teles Resende Universidade Federal de Sergipe
  • Denner Déda A. Nunes Universidade Federal de Sergipe
  • Erivaldo N. Reis Universidade Federal de Sergipe
  • Edilson Jesus Santos Universidade Federal de Sergipe
  • Cristina Ferraz Universidade Federal de Serfipe
  • Rogério Luz Pagano Universidade Federal de Sergipe
  • Antônio Santos Silva Universidade Federal de Sergipe
  • Danilo Conceição Silva Universidade Federal de Sergipe

Keywords:

Chromium hexavalent, acerola seeds, adsorption

Abstract

This study aimed to evaluate the use of the acerola seeds (Malpighia emarginata L.) in the removal of Cr(VI) from aqueous solutions. The adsorbent was obtained by heat treatment at 170 °C, crushed and classified by particle size. The determination of Cr(VI) was carried out by UV-visible through the complexation with 1,5-diphenylcarbazide, measuring the absorbance at 540 nm wavelength. The experiments were performed at 25 ± 1 °C, varying contact time 10-140 minutes, pH 2-8 and adsorbent mass 0.1-0.6 grams. The average removal of Cr(VI) was 66% using 0.1 g of biosorbent, pH 2.0 and contact time 120 min. Uptake kinetics follows the pseudo-second-order model.

Author Biographies

Jéssica Cristian Teles Resende, Universidade Federal de Sergipe

Departamento de Engenharia Química. Processos Químicos

Denner Déda A. Nunes, Universidade Federal de Sergipe

Departamento de Engenharia Química. Processos Químicos

Erivaldo N. Reis, Universidade Federal de Sergipe

Departamento de Engenharia Química. Processos Químicos

Edilson Jesus Santos, Universidade Federal de Sergipe

Departamento de Engenharia Química. Processos Químicos e otimização

Cristina Ferraz, Universidade Federal de Serfipe

Departamento de Engenharia Química

Rogério Luz Pagano, Universidade Federal de Sergipe

Departamento de Engenharia Química. Modelagem e Simulação de processos químicos

Antônio Santos Silva, Universidade Federal de Sergipe

Departamento de Matemática. Modelagem matemática

Danilo Conceição Silva, Universidade Federal de Sergipe

Departamento de Engenharia Química

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Published

2014-10-08

How to Cite

Teles Resende, J. C., Nunes, D. D. A., Reis, E. N., Santos, E. J., Ferraz, C., Pagano, R. L., Silva, A. S., & Silva, D. C. (2014). Adsorption kinetics for the removal of chromium (VI) from aqueous solutions using acerola (Malpighia glabra L.) seeds. Scientia Plena, 10(10). Retrieved from https://scientiaplena.org.br/sp/article/view/2086

Issue

Vol. 10 No. 10 (2014): October/Outubro 2014

Section

Articles

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