Cationized starch-based material as a new ion-exchanger adsorbent for the removal of C.I. Acid Blue 25 from aqueous solutions

Bioresource Technology
François RenaultGrégorio Crini

Abstract

This article describes the use of a cationized starch-based material as new ion-exchanger adsorbent for the removal of C.I. Acid Blue 25 (AB 25) from aqueous solutions. Batch adsorption studies concerning the effects of contact time, pH and temperature are presented and discussed. Adsorption experimental data showed that: (i) the process was uniform and rapid: adsorption of dye reached equilibrium in 50 min in the wide pH range of dye solutions; (ii) adsorption kinetics followed the pseudo-second order model; (iii) the Langmuir model yielded a much better fit than the Freundlich model for the dye concentration range under study; (iv) this adsorbent exhibited interesting adsorption capacities: on the basis of the Langmuir analysis, the maximum adsorption capacity was determined to be 322 mg of dye per gram of material at 25 degrees C; (v) the adsorption capacity decreased with increasing temperature; and (vi) the negative value of free energy change indicated the spontaneous nature of adsorption.

References

Apr 15, 2003·Water Research·G M WalkerS J Allen
Oct 19, 2004·Environmental Science & Technology·Richard S Blackburn
Nov 10, 2004·Journal of Colloid and Interface Science·S J AllenJ F Porter
Jun 2, 2005·Journal of Colloid and Interface Science·Mokhtar AramiNooshin Salman Tabrizi
Jul 5, 2005·Bioresource Technology·Grégorio Crini
Nov 1, 2005·Journal of Hazardous Materials·A GürsesS Karaca
Nov 23, 2005·Journal of Hazardous Materials·S E Abdel-AalA M Dessouki
Jun 3, 2006·Journal of Colloid and Interface Science·Alexandre T PaulinoJorge Nozaki

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Citations

Oct 10, 2012·Carbohydrate Polymers·Marieta ConstantinGheorghe Fundueanu
Nov 14, 2013·Journal of Hazardous Materials·Qintie LinQianjun Liu
Sep 5, 2012·Carbohydrate Polymers·V JanakiSeralathan Kamala-Kannan
Oct 15, 2014·ACS Applied Materials & Interfaces·Manlin ZhangWenxing Wang
Mar 3, 2009·Journal of Colloid and Interface Science·Rafael MarangoniFabrice Leroux

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