Nano-hydroxyapatite polymeric hydrogels for dye removal

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

doi:10.1039/c8ra01887a

Nano-hydroxyapatite polymeric hydrogels for dye removal

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

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

31 Scopus citations

Abstract

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.

Original language	English
Pages (from-to)	18118-18127
Number of pages	10
Journal	RSC Advances
Volume	8
Issue number	32
DOIs	https://doi.org/10.1039/c8ra01887a
State	Published - 2018

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Publisher Copyright:
© 2018 The Royal Society of Chemistry.

ASJC Scopus subject areas

General Chemistry
General Chemical Engineering

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title = "Nano-hydroxyapatite polymeric hydrogels for dye removal",

abstract = "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.",

author = "Kokkarachedu Varaprasad and Dariela Nunez and Yallapu, {Murali Mohan} and Tippabattini Jayaramudu and Elizabeth Elgueta and Patricio Oyarzun",

note = "Publisher Copyright: {\textcopyright} 2018 The Royal Society of Chemistry.",

year = "2018",

doi = "10.1039/c8ra01887a",

language = "English",

volume = "8",

pages = "18118--18127",

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T1 - Nano-hydroxyapatite polymeric hydrogels for dye removal

AU - Varaprasad, Kokkarachedu

AU - Nunez, Dariela

AU - Yallapu, Murali Mohan

AU - Jayaramudu, Tippabattini

AU - Elgueta, Elizabeth

AU - Oyarzun, Patricio

PY - 2018

Y1 - 2018

N2 - 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.

AB - 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.

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DO - 10.1039/c8ra01887a

M3 - Article

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SN - 2046-2069

VL - 8

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EP - 18127

JO - RSC Advances

JF - RSC Advances

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ER -

Nano-hydroxyapatite polymeric hydrogels for dye removal

Abstract

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