Vol 63 No 2 (2018): Journal of the Chilean Chemical Society
Original Research Papers


Bernabé L. Rivas
Department of Polymers, Faculty of Chemistry, University of Concepción
Daniela V. Morales
Department of Polymers, Faculty of Chemistry, University of Concepción
Nalan Kabay
Department of Chemical Engineering, Faculty of Engineering, Ege University
Marek Bryjak
Department of Polymer and Carbon Materials, Faculty of Chemistry, Wroclaw University of Technology
Published June 25, 2018
  • ion exchange resins,
  • chromium,
  • removal,
  • batch and column methods


Ion exchange resins based on the water-insoluble polymers poly(acrylamide-co-styrene sodium sulfonate) (P(AAm-co-ESS)), poly(2-acrylamide-2-methyl- 1-propanesulfonic acid-co-acrylicacid) (P(APSA-co-AAc)),poly(2-acrylamidoglycolic acid-co-2-acrylamide-2-methyl-1-propane sulfonic acid) (P(AAGA-co- APSA)), and poly(2-acrylamidoglycolic acid-co-4-styrene sodium sulfonate) (P(AAGA-co-ESS)) were synthesized by radical polymerization. These polymers were employed to remove Cr(III) from an aqueous solution. The optimum sorption parameters of amount of resin and sorption time were obtained through batch-mode sorption tests. Following batch elution tests to identify the best eluting agent. Finally,the column-mode sorption/elution behaviors of ion exchange resins were studied.

The ion exchange resins exhibited excellent removal of Cr(III). The P(AAGA-co-APSA) resin exhibited 89.4% removal, while P(AAGA-co-ESS) displayed 88.3%, P(AAm-co-ESS) 86.8%, and P(APSA-co-AAc) 89.3%. The column-mode was studied by theP(AAGA-co-APSA) resingave a breakthrough capacity of 1.5 mg Cr(III)/mL resin in the first cycle. The elution efficiency was almost 100%. The breakthrough capacity was 1.2 mg Cr(III)/mL resin in the second cycle. The elution efficiency was 90.2% in the second cycle.


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