ELUTION AND RECOVERY OF METAL FROM METAL COLLECTING MATERIAL AND REGENERATING METHOD OF ELUTING SOLUTION

• Main Authors: TAKEDA KAZUISA, MISAWA HIDEYUKI, HASEGAWA KEIJI, SUGANO JUNICHI, KAWAKAMI HISASHI, KAWAZU HIDEO, KATAGAI AKIO, SEKO NORIAKI, NAGAI HIROSHI, AKAHORI SHOJI, SUGO TAKANOBU, KONISHI SATOSHI, FUJIWARA KUNIO
• Format: Patent
• Language: English
• Published: 29.01.2002
• Edition: 7
• Subjects: ADHESIVES; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; DYES; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; POLISHES; SEPARATION; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; THEIR RELEVANT APPARATUS; TRANSPORTING; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

PROBLEM TO BE SOLVED: To provide a method pf efficiently separating and recovering a collected useful metal or harmful metal from a metal collecting material used for collecting the useful metal from sea water or for collecting and removing the harmful metal or the like from river water or waste water with the quantity of the generation of waste as less as possible. SOLUTION: The eluting and recovering method of the metal from the metal collecting material includes a 1st process for allowing an diluted concentration eluting solution to contact with the metal collecting material, on which the metal is adsorbed, a 2nd process for recovering the desired metal in the eluting solution by allowing the eluting solution having a higher concentration than that in the 1st process to contact with the metal collecting material and a 3rd process for regenerating the spent eluting solution obtained in the 2nd process and simultaneously for further concentrating the recovered desired metal and the eluting solution regenerated in the 3rd process is used as the eluting solution in the 1st process.