REMOCIÓN DE Cd2+, Ni2+, Pb2+ Y Zn2+ MEDIANTE COPOLIMEROS DE ALMIDÓN-g-ÁCIDO ITACÓNICO

Authors

  • José Urdaneta
  • Kelly Pernia
  • Orietta León
  • José Delgado
  • Haydée Oliva
  • Diana Soto

Abstract

Hydrogels were synthesized by free radical graft copolymerization of itaconic acid (IA) onto corn starch (Alm-g-IA). The redox  initiation  system  potassium  permanganate  (KMnO4)  -  sodium  bisulfite  (NaHSO3)  was  used.  The  effect  of  partial neutralization  of  IA  (Alm-g-IA80%)  and  concentration  of  initiator  (Alm-g-IA½[I])  on  grafting  efficiency  and  adsorption capacity  of  the  hydrogels  were  investigated.  Grafting  was  increased  with  the  concentration  of  initiator  and  the  partial neutralization of IA. Hydrogels were sensitive to pH. The removal capacity order was Pb2+>Ni2+>Zn2+>Cd2+. Experimental kinetic  and  equilibrium  adsorption  data  for  Ni2+  were  best  fitted  to  the  pseudosecond  order  and  Freundlich  isotherm models.

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Published

2014-04-26

How to Cite

Urdaneta, J., Pernia, K., León, O., Delgado, J., Oliva, H., & Soto, D. (2014). REMOCIÓN DE Cd2+, Ni2+, Pb2+ Y Zn2+ MEDIANTE COPOLIMEROS DE ALMIDÓN-g-ÁCIDO ITACÓNICO. LatinAmerican Journal of Metallurgy and Materials, (1), 11–12. Retrieved from https://www.rlmm.org/ojs/index.php/rlmm/article/view/583

Issue

2014, S6

Section

Supplementary Articles

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