Study of the Chromium VI Adsorption by the Employment of a Biocomposite Based on Rice Husk and Chitosan

Marcela Lopez-Chavez, Alejandro Silva-Vela, Paul Huanca-Zuñiga, Daily Gallegos-Florez, Jonathan Almirón, Danny Tupayachy-Quispe

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

Abstract

This current work has focused on the evaluation of the hexavalent chromium – Cr (VI) adsorption carried out by a biocomposite based on rice husk and chitosan. The chromium IV is an agro industrial contaminant residual while chitosan is a natural biopolymer with a great adsorption of heavy metals. Conditions for the biosorption such as concentrations of rice husk and Cr (VI) alongside the contact time, were identified in order to achieve the highest biosorpion of the heavy metal – Cr (VI). The morphology of rice husk, carried out in a Scanning Electron Microscopy (SEM), showed a porous surface which can allow the adherence of chitosan. Different concentrations of rice husk (10, 20, 30, 40, 50 gggg-1) were used for the synthesis of the biopolymer. Furthermore, the capacity of Cr (VI) adsorption of the biocomposite based on rice husk and chitosan was evaluated throughout the contact time, resulting in a 68.28 % of Cr (IV) removal at 120 minutes. Additionally, the results of the experimental design consistent with the adsorption kinetic designs are shown in this work.

Original languageEnglish
Title of host publicationKey Engineering Materials
PublisherTrans Tech Publications Ltd
Pages109-115
Number of pages7
DOIs
StatePublished - 2022

Publication series

NameKey Engineering Materials
Volume931
ISSN (Print)1013-9826
ISSN (Electronic)1662-9795

Bibliographical note

Publisher Copyright:
© 2022 Trans Tech Publications Ltd, Switzerland.

Keywords

  • adsorption
  • Biocomposite
  • Chitosan
  • kinetic reaction
  • Rice husk

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