The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 08, 2005
Filed:
Apr. 25, 2000
Takanobu Sugo, Gunma, JP;
Akio Katakai, Gunma, JP;
Noriaki Seko, Gunma, JP;
Shin Hasegawa, Gunma, JP;
Kunio Fujiwara, Kanagawa, JP;
Hiroshi Nagai, Kanagawa, JP;
Hideo Kawazu, Kanagawa, JP;
Kazuyoshi Takeda, Kanagawa, JP;
Satoshi Konishi, Kanagawa, JP;
Hideyuki Misawa, Kanagawa, JP;
Takashi Kawakami, Kanagawa, JP;
Junichi Kanno, Kanagawa, JP;
Keiji Hasegawa, Kanagawa, JP;
Masaji Akahori, Tokyo, JP;
Takanobu Sugo, Gunma, JP;
Akio Katakai, Gunma, JP;
Noriaki Seko, Gunma, JP;
Shin Hasegawa, Gunma, JP;
Kunio Fujiwara, Kanagawa, JP;
Hiroshi Nagai, Kanagawa, JP;
Hideo Kawazu, Kanagawa, JP;
Kazuyoshi Takeda, Kanagawa, JP;
Satoshi Konishi, Kanagawa, JP;
Hideyuki Misawa, Kanagawa, JP;
Takashi Kawakami, Kanagawa, JP;
Junichi Kanno, Kanagawa, JP;
Keiji Hasegawa, Kanagawa, JP;
Masaji Akahori, Tokyo, JP;
Ebara Corporation, Tokyo, JP;
Abstract
An object of the present invention is to provide a structure of a metal collecting material for use in seawater or river water or industrial wastewater to give the most excellent adsorption efficiency. Another object of the present invention is to provide a process for efficiently separating and recovering valuable metals or noxious metals from a metal collecting material having collected said valuable metals from seawater or noxious metals from river water or wastewater with the least possible waste generation. A metal collector according to an aspect of the present invention is formed by stacking at least partially alternate layers of a fibrous metal collecting material with a spacer for introducing a liquid to be treated into said collecting material, wherein the area of spacer side faces represents 25-75% of the total area of collecting material side faces and spacer side faces in the side faces of the stack. A process for eluting and recovering a metal from a metal collecting material according to another aspect of the present invention comprises the steps: (1) contacting the metal collecting material having absorbed a metal with a dilute eluent, (2) contacting the metal collecting material with an eluent more concentrated than in step 1 to recover the metal into the eluent; and (3) contacting a metal resorbing material with the eluate from step 2 to resorb the metal.