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Boron removal by glucamine chelate adsorbent grafted on polyethylene fabric

ポリエチレン繊維にグラフトしたグルカミン型吸着材のホウ素吸着特性

瀬古 典明; 天田 春代; 保科 宏行; 池川 淳史*; 畑中 宏支*

Seko, Noriaki; Amada, Haruyo; Hoshina, Hiroyuki; Ikegawa, Atsushi*; Hatanaka, Hiroshi*

Fibrous glucamine chelate adsorbent (GA) for boron removal was synthesized by pre-irradiation method of radiation-induced grafting of glycydyl methacrylate onto a nonwoven polyethylene fabric and the subsequent chemical modification. We have adopted the emulsion grafting technique which realized high yield of grafting degree in comparison with general organic solvent grafting system. Furthermore, the chemical modification solvent was also determined to be a water to minimize the environmental pollution. In the grafting process, the grafting degree (Dg) reached 221% at the minimized irradiation dose of 20 kGy for 1 h at 40$$^{circ}$$C. To evaluate GA, the effect of the co-existence ions such neodymium (Nd) and dysprosium (Dy) on boron adsorption was investigated to determine the possibility of Nd/Dy recycle as industrial future resources. GA with 2.3 mmol/g-adsorbent was tested by batch mode adsorption of boron with Nd and Dy. As a result, the recovery of boron was more than 90% in the presence of extremely high concentrations of Nd and Dy.

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