JPS5492594A - Removing method for heavy metals in aqueous solution of ferrous chloride - Google Patents

Removing method for heavy metals in aqueous solution of ferrous chloride

Info

Publication number
JPS5492594A
JPS5492594A JP16073377A JP16073377A JPS5492594A JP S5492594 A JPS5492594 A JP S5492594A JP 16073377 A JP16073377 A JP 16073377A JP 16073377 A JP16073377 A JP 16073377A JP S5492594 A JPS5492594 A JP S5492594A
Authority
JP
Japan
Prior art keywords
soln
heavy metals
iron
fecl
contg
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP16073377A
Other languages
Japanese (ja)
Other versions
JPS5636127B2 (en
Inventor
Satoru Matsuda
Shigeyoshi Ogawa
Toshihisa Nakatsu
Toshiro Shiomi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daikin Industries Ltd
Original Assignee
Daikin Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Daikin Industries Ltd filed Critical Daikin Industries Ltd
Priority to JP16073377A priority Critical patent/JPS5492594A/en
Publication of JPS5492594A publication Critical patent/JPS5492594A/en
Publication of JPS5636127B2 publication Critical patent/JPS5636127B2/ja
Granted legal-status Critical Current

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  • Inorganic Compounds Of Heavy Metals (AREA)

Abstract

PURPOSE: To remove simply and efficiently heavy matals in a strongly acidic aq. soln. of ferrous chloride contg. hydrochloric acid and/or sulfuric acid by adding metallic iron to the soln. to adjust the pH of the soln. to a specific value through the reaction of the iron and acids, and then filtering the soln.
CONSTITUTION: Metallic iron, pref. porous reduced iron is added to an aq. soln. of FeCl2 of pH≤about 1 contg. hydrochloric acid and/or sulfuric acid and heavy metals such as Cr, Cd, Pd, Cu, Hg and As to adjust the pH of the soln. to about 3W6 through the reaction of the iron and acids. The concn. of FeCl2 is not esp. limited, yet it is usually about 20W40 wt%. Since the heavy metals turn to scum. they are easily removed by filtraction even in case of about 1000 ppm. By regulating the pH of the soln. to below about 1 with acid again, an aq. soln. of FeCl2 is obtd. contg. little heavy metals.
COPYRIGHT: (C)1979,JPO&Japio
JP16073377A 1977-12-29 1977-12-29 Removing method for heavy metals in aqueous solution of ferrous chloride Granted JPS5492594A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16073377A JPS5492594A (en) 1977-12-29 1977-12-29 Removing method for heavy metals in aqueous solution of ferrous chloride

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16073377A JPS5492594A (en) 1977-12-29 1977-12-29 Removing method for heavy metals in aqueous solution of ferrous chloride

Publications (2)

Publication Number Publication Date
JPS5492594A true JPS5492594A (en) 1979-07-21
JPS5636127B2 JPS5636127B2 (en) 1981-08-21

Family

ID=15721273

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16073377A Granted JPS5492594A (en) 1977-12-29 1977-12-29 Removing method for heavy metals in aqueous solution of ferrous chloride

Country Status (1)

Country Link
JP (1) JPS5492594A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0604817A1 (en) * 1992-12-22 1994-07-06 KRONOS TITAN-GmbH Process for the purification of a technical iron chloride solution by selective precipitation

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5323898A (en) * 1976-08-19 1978-03-04 Asahi Denka Kogyo Kk Production of iron chloride solution

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5323898A (en) * 1976-08-19 1978-03-04 Asahi Denka Kogyo Kk Production of iron chloride solution

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0604817A1 (en) * 1992-12-22 1994-07-06 KRONOS TITAN-GmbH Process for the purification of a technical iron chloride solution by selective precipitation

Also Published As

Publication number Publication date
JPS5636127B2 (en) 1981-08-21

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