To provide a metal adsorbent capable of adsorbing a useful or a harmful metal dissolved in hot-spring water, and further a method for recovering to remove the useful or the harmful metal dissolved in the hot-spring water.
In the method for recovering to remove the useful or the harmful metal dissolved in the hot-spring water, the method includes passing the hot-spring water through the metal adsorbent having a polymer substrate, a graft chain introduced into the polymer substrate by a graft polymerization and composed of a monomer mainly having a vinyl group, and a chelating formation group introduced into the graft chain. It is preferable that the chelating formation group is selected from the group consisting of an amidoxime group, a phosphate group, an amine group, an iminodiacetic acid group and a functional group obtained by making the phosphate group carry zirconium or iron.
TAMADA MASAO
KASAI NOBORU
TAKAHASHI MAKIKATSU
TAKEI ATSUSHI
TAKAHASHI MAKIKATSU
TAKEI ATSUSHI
| JP2000178531A | 2000-06-27 | |||
| JP2004068182A | 2004-03-04 | |||
| JP2004099715A | 2004-04-02 |
| WO2002060824A1 | 2002-08-08 |
Tadashi Masui
Yasushi Kobayashi
Akio Chiba
Hiroyuki Tomita
Koji Hirayama
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