Optimization of the Lead Adsorption Process with Modified Chitosan for being used in the Treatment of Water

Authors

  • C. Gisela Dávila Molina Laboratorio de Control de Calidad Nefrocontrol S.A
  • Pablo Bonilla Central University of Ecuador

DOI:

https://doi.org/10.29166/quimica.v2i1.542

Keywords:

Chitosan, chitin, chitosan-glutaraldehyde, chitosan-iron, adsorption, lead

Abstract

In this study, chitosan extracted from Penaeus Vannamei shrimp was modified to prepare two adsorbent materials: chitosan-glutaralaldehyde (QGD) and chitosan-ferric nitrate (QFe). Effects of the pH, dosage of adsorbent, stirring speed, temperature and contact time were evaluated. The best lead adsorption was found to occur onto QGD at pH 6,75-7,00; dosage of adsorbent 0,35-0,50g and time of contact 151-175min. The efficiency of lead remotion with QGD was 98,40% and the isothermal study of adsorptive capacity showed an absorption of 282,61mg of Pb2+ per g of QGD.

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Author Biographies

C. Gisela Dávila Molina, Laboratorio de Control de Calidad Nefrocontrol S.A

Los Arupos E1-129 y Av. 10 de Agosto, Quito–Ecuador

Pablo Bonilla, Central University of Ecuador

Facultad de Ciencias Químicas, Quito–Ecuador

References

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Vassireddy, D. (2005). Arsenic adsorption onto iron-chitosan composite from drinkin water. Missouri: Universidad Missouri-Columbia

Published

2011-11-01

How to Cite

Dávila Molina, C. G., & Bonilla, P. (2011). Optimization of the Lead Adsorption Process with Modified Chitosan for being used in the Treatment of Water. Química Central, 2(1), 19–22. https://doi.org/10.29166/quimica.v2i1.542

Issue

Section

Contaminación ambiental