Adsorption Characteristics of Protonated Chitosan for Hexavalent Chromium in Simulated Wastewater

International Journal of Agriculture & Environmental Science

© 2018 by SSRG - IJAES Journal

Volume 5 Issue 1

Year of Publication : 2018

Authors : L. Chen, X.R. Zhu, J.M. Wang, Q.R. Chen

10.14445/23942568/IJAES-V5I1P103

How to Cite?

L. Chen, X.R. Zhu, J.M. Wang, Q.R. Chen, " Adsorption Characteristics of Protonated Chitosan for Hexavalent Chromium in Simulated Wastewater," SSRG International Journal of Agriculture & Environmental Science, vol. 5,  no. 1, pp. 15-20, 2018. Crossref, https://doi.org/10.14445/23942568/IJAES-V5I1P103

Abstract:

Chitosan was protonated by sulfuric acid solution. The adsorption characteristics of protonated chitosan for hexavalent chromium Cr (VI) in the simulated wastewater containing Cr (VI) were studied. The effects of chitosan protonation degree and pH value of raw water on Cr (VI) adsorption characteristics were investigated. The research results showed that the greater the protonation degree, the higher the removal rate of Cr (VI), and the chitosan protonated in pH 1.5 diluted sulfuric acid had the best adsorption effect of 96%. In addition, the Cr (VI) removal efficiency reached the highest when the pH value of the raw water was three. The adsorption process of the protonated chitosan could well meet the Lagergren pseudo-second order equation and was dominated by chemical adsorption.

Keywords:

protonation, chitosan, adsorption, wastewater, hexavalent chromium

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