Title:
ヒ素吸着性イオン交換体
Document Type and Number:
Japanese Patent JP2006527078
Kind Code:
A
Abstract:
The present invention relates to a method for producing iron oxide/iron oxyhydroxide-containing carboxyl-bearing ion exchangers, which is characterized in that a) a bead-type carboxyl-containing ion exchanger is contacted in aqueous suspension with iron(III) salts or a') an aminomethylated crosslinked polystyrene bead polymer is contacted in aqueous suspension with iron(III) salts and with chloroacetic acid and b) the suspensions obtained from stages a) or a') are adjusted to pHs in the range from 3 to 14 by adding alkali metal hydroxides or alkaline earth metal hydroxides and the resultant iron oxide/iron oxyhydroxide-containing ion exchangers are isolated by known methods, to the ion exchangers themselves their, and also to their use for the adsorption of heavy metals, in particular arsenic.
Inventors:
Reinhold Kliper
Andreas Schlegel
Wolfgang Podson
Rüdiger Seidel
Andreas Schlegel
Wolfgang Podson
Rüdiger Seidel
Application Number:
JP2006515813A
Publication Date:
November 30, 2006
Filing Date:
June 01, 2004
Export Citation:
Assignee:
LANXESS Deutschland Gamebecher
International Classes:
B01J39/20; B01D53/02; B01D53/64; B01J39/16; B01J45/00; B01J47/00; C02F1/28; C02F1/42; C02F1/66
Attorney, Agent or Firm:
Masatake Shiga
Takashi Watanabe
Yasuhiko Murayama
Shinya Mitsuhiro
Takashi Watanabe
Yasuhiko Murayama
Shinya Mitsuhiro