Liquid purification or separation – Processes – Ion exchange or selective sorption
Patent
1984-01-13
1986-06-24
Cintins, Ivars
Liquid purification or separation
Processes
Ion exchange or selective sorption
210670, 210674, 210679, 210683, C02F 128
Patent
active
045966591
ABSTRACT:
Borate ions dissolved at low concentration in water are separated efficiently with the use of a hydroxide or hydrous oxide of a rare earth element as the adsorbent. By contacting a borate ion-containing water with the adsorbent, borate ions are separated by adsorption, and the adsorbent having adsorbed borate ions is desorbed and regenerated for reuse with a desorbing solution adjusted to pH about 2 to about 4 or pH about 12 to about 14.
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Ishibashi Yuzuru
Kaneda Akira
Nomura Junji
Asahi Kasei Kogyo Kabushiki Kaisha
Cintins Ivars
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