TY - JOUR
T1 - Radiation induced modified CMC-based hydrogel with enhanced reusability for heavy metal ions adsorption
AU - Hong, Tran Thu
AU - Okabe, Hirotaka
AU - Hidaka, Yoshiki
AU - Omoldi, Brian A.
AU - Hara, Kazuhiro
N1 - Funding Information:
The authors are thankful to the JSPS KAKENHI Grant Numbers JP21656239 , JP24360398 for a financial support to carry out the work; Kyushu University's Center for Accelerator and Beam Applied Science for gamma-ray irradiation and Center of Advanced Instrumental Analysis for facilitating SEM and EDS measurements.
PY - 2019/10/24
Y1 - 2019/10/24
N2 - 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.
AB - 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.
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U2 - 10.1016/j.polymer.2019.121772
DO - 10.1016/j.polymer.2019.121772
M3 - Article
AN - SCOPUS:85071881981
VL - 181
JO - Polymer
JF - Polymer
SN - 0032-3861
M1 - 121772
ER -