METHOD FOR ELUTING AND RECOVERING METAL FROM METAL CAPTURING MEMBER

• Main Authors: TAKEDA KAZUISA, MISAWA HIDEYUKI, HASEGAWA KEIJI, SUGANO JUNICHI, KAWAZU HIDEO, KAWAKAMI HISASHI, KATAGAI AKIO, SEKO NORIAKI, NAGAI HIROSHI, AKAHORI SHOJI, SUGO TAKANOBU, KONISHI SATOSHI, HASEGAWA SHIN, FUJIWARA KUNIO
• Format: Patent
• Language: English
• Published: 14.11.2000
• Edition: 7
• Subjects: ADHESIVES; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; COMPOSITIONS BASED THEREON; DECONTAMINATION ARRANGEMENTS THEREFOR; DYES; FERROUS OR NON-FERROUS ALLOYS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; NUCLEAR ENGINEERING; NUCLEAR PHYSICS; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; PHYSICS; POLISHES; PRETREATMENT OF RAW MATERIALS; PRODUCTION AND REFINING OF METALS; PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULARRADIATION OR PARTICLE BOMBARDMENT; SEPARATION; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; THEIR PREPARATION OR CHEMICAL WORKING-UP; THEIR RELEVANT APPARATUS; TRANSPORTING; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; TREATMENT OF ALLOYS OR NON-FERROUS METALS; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

PROBLEM TO BE SOLVED: To provide a method for effectively separating and recovering captured valuable metals and harmful metals with as small generation of wastes as possible from a metal capturing member which captures the valuable metals in sea water, or captures and removes harmful heavy metals in river water and waste water. SOLUTION: The metal eluting and recovering method includes a first process to bring an eluate low in concentration into contact with a metal capturing member adsorbing metals, a second process to bring an eluate higher in concentration than that in the first process into contact with the metal capturing member to recover the intended metals in the eluate, and a third process to bring the used eluate obtained in the second process into contact with a metal re-adsorbing material to re-adsorb the intended metals.