| 简介 |
PROBLEM TO BE SOLVED : To obtain an adsorbent with a drastic improvement in performance of adsorbing arsenic as compared with those of conventional adsorbents, with which water contaminated with arsenic can be purified in large quantities at high speed, treated water containing low-concentration arsenic can be efficiently purified, adsorption activity can be retained for a long period of time so as to enable easy maintenance, and in addition, neither adsorbent nor resin components are eluted.
SOLUTION : The arsenic adsorbent comprises a rare earth element hydroxide and a high-molecular resin which coats the surface of the hydroxide, wherein the rare earth element hydroxide has a central void and micropores surrounding the central void and the high-molecular resin, which coats the surface of the hydroxide, constitutes a porous skin layer.
COPYRIGHT : (C)2006, JPO&NCIPI |
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