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• Ren, F
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Molecules 2012, 17(4), 4388-4399; doi:10.3390/molecules17044388

Article

Adsorption Behavior of Fe(II) and Fe(III) Ions on Thiourea Cross-Linked Chitosan with Fe(III) as Template

Jun Dai ^1,2 , FengLian Ren ^1,*  and ChunYuan Tao ²

¹ College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China ² College of Chemistry and Chemical Engineering, JiuJiang University, JiuJiang 332005, China

* Author to whom correspondence should be addressed.

Received: 27 February 2012; in revised form: 6 April 2012 / Accepted: 6 April 2012 / Published: 11 April 2012

Download PDF Full-Text [486 KB, uploaded 11 April 2012 11:46 CEST]

Abstract: A new type of thiourea cross-linked chitosan with Fe(III) as template (TCCTS template) was synthesized. The adsorption of Fe(II) and Fe(III) on this TCCTS template was studied. The factors affecting adsorption such as pH and contact time were considered. The results showed that the optimum pH value for adsorption was pH = 5.0 and the adsorption equilibrium time was about 60 min. The adsorption isotherms and kinetics were investigated, and the equilibrium data agreed very well with the Langmuir model and the pseudo second-order model could describe adsorption process better than the pseudo first-order model. Results also showed that TCCTS template was a favourable adsorbent for Fe(II) and Fe(III) in aqueous solution.

Keywords: adsorption; thiourea; cross-linked chitosan; template; iron ion

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