Radiation induced modified CMC-based hydrogel with enhanced reusability for heavy metal ions adsorption

Tran Thu Hong, Hirotaka Okabe, Yoshiki Hidaka, Brian A. Omoldi, Kazuhiro Hara

Research output: Contribution to journalArticle

Abstract

The study attempted solving hazardous heavy-metal problems by creating a new eco-friendly functional hydrogel adsorbent (CSB-hydrogel). By utilizing γ-irradiation induced grafting and co-polymerization, the CSB-hydrogels were synthesized from a main bio-polymer {Sodium Carboxymethyl Cellulose (CMC)} and two active vinyl monomers {Sodium Styrene Sulfonate (SSS) and Bis[2-(Methacryloyloxy)Ethyl] Phosphate (BMEP)}. As well as the compression moduli, the CSB-hydrogels showed significant difference in the swelling capacities with the variety of BMEP-amounts. The author then examined the CSB-hydrogels’ multi-metal-ion adsorption capacities by performing the ion-capturing experiments with a varying species mixture solution and by utilizing ICP-MS analysis technique. The CSB-hydrogels demonstrated their highly-efficient recovery functionalities for most of the metal ions in the solution; especially, higher than 70% for nickel. Moreover, the CSB-hydrogels showed sufficient performance after 4-time repetitive adsorption-desorption treatments. With the high heavy-metal capturing-efficiency and the re-usability, the CSB-hydrogels were revealed to have a high potential as a new eco-friendly environment-purifying material.

Original languageEnglish
Article number121772
Journalpolymer
Volume181
DOIs
Publication statusPublished - Oct 24 2019

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Carboxymethylcellulose Sodium
Hydrogels
Hydrogel
Reusability
Heavy Metals
Heavy ions
Heavy metals
Metal ions
Cellulose
Radiation
Adsorption
Sodium
Phosphates
Styrene
Nickel
Adsorbents
Copolymerization
Swelling
Desorption
Polymers

All Science Journal Classification (ASJC) codes

  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry

Cite this

Radiation induced modified CMC-based hydrogel with enhanced reusability for heavy metal ions adsorption. / Hong, Tran Thu; Okabe, Hirotaka; Hidaka, Yoshiki; Omoldi, Brian A.; Hara, Kazuhiro.

In: polymer, Vol. 181, 121772, 24.10.2019.

Research output: Contribution to journalArticle

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