Nano-hydroxyapatite polymeric hydrogels for dye removal

Kokkarachedu Varaprasad*, Dariela Nunez, Murali Mohan Yallapu, Tippabattini Jayaramudu, Elizabeth Elgueta, Patricio Oyarzun

*Autor correspondiente de este trabajo

Producción científica: Contribución a una revistaArtículorevisión exhaustiva

31 Citas (Scopus)

Resumen

Herein, two kinds of nano-hydroxyapatite were synthesized from Clam and Magellan shell by wet chemical precipitation method. Mainly, carboxymethyl cellulose/acrylamide/nano-hydroxyapatite composite hydrogels were developed via a free-radical polymerization process and investigated as a sorbent for Acid Blue 113 (AB) from aqueous AB solution. The swelled and kinetic behaviours of hydrogels were investigated using a gravimetric method. The swelling properties of the CMC-AM-hydrogels were influenced by the calcium electrolytes (Ca2+) content in nano-hydroxyapatites. The diffusion coefficient value increased with the increase of nano-hydroxyapatite content in the CMC-AM/nHA-CS (0.22353-0.27681 cm2 s-1) and CMC-AM/nHA-MS (0.22377-0.29737 cm2 s-1) hydrogels. The mechanism of water diffusion was found to be anomalous transport. The CMC-AM/nHA-MS hydrogels showed high AB absorption efficiency and adsorption capacities. These results explained that the nano-hydroxyapatites of Magellan shells based hydrogels are attractive nanocomposite hydrogels for the adsorption of dye in the water purification applications.

Idioma originalInglés
Páginas (desde-hasta)18118-18127
Número de páginas10
PublicaciónRSC Advances
Volumen8
N.º32
DOI
EstadoPublicada - 2018

Nota bibliográfica

Publisher Copyright:
© 2018 The Royal Society of Chemistry.

Áreas temáticas de ASJC Scopus

  • Química General
  • Ingeniería Química General

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