Notice of RetractionStudies on the Removal of Cd(II) Using Modified Chitosan Resins

Notice of Retraction

After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.

We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.

The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org.

Chitosan derivative, N-(2-hydroxyethyl)TEPA-type chitosan resin, was chemically modified by chloromethyloxirane and tetraethylenepentamine (TEPA). The uptake behaviour of resin towards Cd(II) was studied in aqueous medium, where the maximum adsorption capacity of the resin was 314.1mg/g at pH 8.0 and 25°C. Kinetic studies referred that the uptake reaction is pseudo second order. The uptake reaction is a monolayer and found to be endothermic. Interference of other cations and anions in Cd(II) adsorption was found to be significant. The resin was regenerated effectively (desorption ratio-98%) using a mixture of 2M NaCl and 0.5M, and can be regenerated many times as well as stable performance in adsorption of Cd(II).