Reactive dye removal from wastewater using a chitosan nanodispersion
Journal article, 2011

Adsorption of an azo reactive dye, C.I. Reactive Red 120 (RR120), from aqueous solution on chitosan and on a chitosan nanodispersion has been studied. The nanodispersion was prepared using a mixture of chitosan and sodium tripolyphosphate. The results showed that the adsorption of RR120 on dissolved chitosan and on the chitosan nanodispersion was affected significantly by initial dye concentration, sorbent amount, temperature, pH and ionic strength of the solution. Maximum dye removal for both adsorbents was at a pH of 4-5 and the adsorption of the reactive dye on both dissolved chitosan and the nanodispersion gave good fit to the Langmuir isotherm model. The adsorption capacity of the nanodispersion was around 910mgg-1, much higher than of dissolved chitosan, which was 51mgg-1. The adsorption of the dye on the chitosan nanodispersion reached equilibrium much faster than on dissolved chitosan. The kinetics of the adsorption correlated well with the pseudo-second order model.


H. Momenzadeh

Amirkabir University of Technology

Ali Tehrani

Institute for Color Science and Technology

A. Khosravi

Amirkabir University of Technology

K. Gharanjig

Institute for Color Science and Technology

Krister Holmberg

Chalmers, Chemical and Biological Engineering, Applied Surface Chemistry


0011-9164 (ISSN)

Vol. 271 0011-9164 225-230

Driving Forces

Sustainable development

Subject Categories

Chemical Engineering

Chemical Sciences

Areas of Advance

Materials Science



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