TY - JOUR
T1 - Poly(vinyl diglycolic acid ester)-Grafted Polyethylene/Polypropylene Fiber Adsorbent for Selective Recovery of Samarium
AU - Hamada, Takashi
AU - Hoshina, Hiroyuki
AU - Seko, Noriaki
N1 - Funding Information:
This work was partially supported by JSPS KAKENHI (grant number JP17K05956). We would like to thank Ms. Haruyo Amada for assistance with the ICP analysis. The authors would also like to thank Editage for English language editing.
Publisher Copyright:
© 2022 American Chemical Society..
PY - 2022/3/11
Y1 - 2022/3/11
N2 - Poly(vinyl diglycolic acid ester)-grafted polyethylene fabric (PE-PDGA) containing 1.71-4.58 mmol/g millimolar equivalents (meqs) of immobilized tridentate ligand were prepared through radiation-induced graft polymerization of vinyl acetate, saponification, and a ring-opening reaction of diglycolic anhydride. PE-PDGA can adsorb rare earth metal ions, such as Sm, Nd, and Dy, at pH 2.5, with an increase in the removal ratio of the Sm, Nd, and Dy ions observed with an increase in the pH from 2.5 to 4. Furthermore, PE-PDGA more selectively adsorbs rare earth metals, such as Sm, Nd, and Dy, than other metals, such as Cu, Zn, and Co, in the pH range of 2.5-4; 73 mg Sm was adsorbed on 1 g PE-PDGA at an initial metal concentration of 100 ppm at pH 3, while Co was not adsorbed on PE-PDGA in the initial metal concentration range of 10 to 100 ppm. Thus, PE-PDGA showed high selectivity toward rare earth metals, and Sm and Co could be separated effectively.
AB - Poly(vinyl diglycolic acid ester)-grafted polyethylene fabric (PE-PDGA) containing 1.71-4.58 mmol/g millimolar equivalents (meqs) of immobilized tridentate ligand were prepared through radiation-induced graft polymerization of vinyl acetate, saponification, and a ring-opening reaction of diglycolic anhydride. PE-PDGA can adsorb rare earth metal ions, such as Sm, Nd, and Dy, at pH 2.5, with an increase in the removal ratio of the Sm, Nd, and Dy ions observed with an increase in the pH from 2.5 to 4. Furthermore, PE-PDGA more selectively adsorbs rare earth metals, such as Sm, Nd, and Dy, than other metals, such as Cu, Zn, and Co, in the pH range of 2.5-4; 73 mg Sm was adsorbed on 1 g PE-PDGA at an initial metal concentration of 100 ppm at pH 3, while Co was not adsorbed on PE-PDGA in the initial metal concentration range of 10 to 100 ppm. Thus, PE-PDGA showed high selectivity toward rare earth metals, and Sm and Co could be separated effectively.
KW - diglycolic acid
KW - graft-type adsorbent
KW - radiation-induced graft polymerization
KW - rare earth metals
KW - samarium-cobalt separation
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U2 - 10.1021/acsapm.1c01731
DO - 10.1021/acsapm.1c01731
M3 - Article
AN - SCOPUS:85125642168
SN - 2637-6105
VL - 4
SP - 1846
EP - 1854
JO - ACS Applied Polymer Materials
JF - ACS Applied Polymer Materials
IS - 3
ER -