DK0576335T3 - Process for purifying an aqueous solution of alkali metal chloride to remove iodine - Google Patents

Process for purifying an aqueous solution of alkali metal chloride to remove iodine

Info

Publication number
DK0576335T3
DK0576335T3 DK93401568.6T DK93401568T DK0576335T3 DK 0576335 T3 DK0576335 T3 DK 0576335T3 DK 93401568 T DK93401568 T DK 93401568T DK 0576335 T3 DK0576335 T3 DK 0576335T3
Authority
DK
Denmark
Prior art keywords
iodine
alkali metal
purifying
metal chloride
aqueous solution
Prior art date
Application number
DK93401568.6T
Other languages
Danish (da)
Inventor
Francois Delmas
Original Assignee
Atochem Elf Sa
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 Atochem Elf Sa filed Critical Atochem Elf Sa
Application granted granted Critical
Publication of DK0576335T3 publication Critical patent/DK0576335T3/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
    • C01D3/00—Halides of sodium, potassium or alkali metals in general
    • C01D3/14—Purification
    • C01D3/16—Purification by precipitation or adsorption
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/30—Processes for preparing, regenerating, or reactivating
    • B01J20/34—Regenerating or reactivating
    • B01J20/3416—Regenerating or reactivating of sorbents or filter aids comprising free carbon, e.g. activated carbon
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B7/00—Halogens; Halogen acids
    • C01B7/13—Iodine; Hydrogen iodide
    • C01B7/14—Iodine

Abstract

The invention relates to a process for the purification of an aqueous alkali metal chloride solution containing iodine in which oxidation is carried out to molecular iodine and then it is adsorbed on active charcoal. By oxidizing the active charcoal with a solution containing active chlorine before adsorbing the iodine, it is possible to lower the iodine content of the solution to 0.05 mg/l. The invention is particularly useful for purifying sodium chloride brines which are electrolyzed in membrane cells.
DK93401568.6T 1992-06-26 1993-06-18 Process for purifying an aqueous solution of alkali metal chloride to remove iodine DK0576335T3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9207914A FR2692879B1 (en) 1992-06-26 1992-06-26 Process for the purification of an aqueous solution of alkali metal chloride to remove iodine.

Publications (1)

Publication Number Publication Date
DK0576335T3 true DK0576335T3 (en) 1996-07-22

Family

ID=9431265

Family Applications (1)

Application Number Title Priority Date Filing Date
DK93401568.6T DK0576335T3 (en) 1992-06-26 1993-06-18 Process for purifying an aqueous solution of alkali metal chloride to remove iodine

Country Status (13)

Country Link
EP (1) EP0576335B1 (en)
JP (1) JPH0791666B2 (en)
KR (1) KR100237429B1 (en)
CN (1) CN1040738C (en)
AT (1) ATE135331T1 (en)
CA (1) CA2099184C (en)
DE (1) DE69301778T2 (en)
DK (1) DK0576335T3 (en)
ES (1) ES2087678T3 (en)
FI (1) FI932936A (en)
FR (1) FR2692879B1 (en)
GR (1) GR3020029T3 (en)
NO (1) NO312505B1 (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101295904B1 (en) * 2005-05-02 2013-08-12 닛포가가쿠 가부시키가이샤 Process for the recovery of iodine
US10013381B2 (en) 2006-08-31 2018-07-03 Bose Corporation Media playing from a docked handheld media device
KR101046433B1 (en) 2008-09-10 2011-07-05 한국화학연구원 How to remove iodine mixture from aqueous solution
JP5571416B2 (en) * 2010-03-17 2014-08-13 Ｊｘ日鉱日石金属株式会社 Copper sulfide ore leaching method
WO2011145688A1 (en) 2010-05-19 2011-11-24 Jx日鉱日石金属株式会社 Method for processing acidic solution that contains iodide ions and iron ions
CN101935847B (en) * 2010-10-20 2012-10-17 昊华宇航化工有限责任公司 Method for removing trace iodine from salt water for producing sodium hydroxide by electrolysis method
JP5718175B2 (en) * 2011-06-21 2015-05-13 Jx日鉱日石金属株式会社 Elution method of iodine adsorbed on activated carbon
FR2991494B1 (en) 2012-06-05 2020-01-31 Korea Atomic Energy Research Institute IODINE ABSORBING MATERIAL CONTAINING SALT AND RADIOACTIVE IODINE REMOVAL SYSTEM USING THE SAME
KR101636976B1 (en) * 2012-06-05 2016-07-12 한국원자력연구원 A iodine absorbent material containing salts and a radioactive iodine removal system using the same
RU2550405C2 (en) * 2013-06-13 2015-05-10 Общество с ограниченной ответственностью "Тюменская сырьевая компания" (ООО "ТСК") Method of iodine extraction from confined groundwater
CN103305863B (en) * 2013-06-19 2016-04-27 北京化工大学 A kind of ion film caustic soda brine depth is except iodine method
CN103288201A (en) * 2013-06-20 2013-09-11 哈尔滨工业大学 Water treatment method for removing radioactive iodine pollution through combined use of persulfate and active carbon
CN103866348A (en) * 2014-04-08 2014-06-18 重庆大学 Method for removing trace iodine in chlor-alkali brine by using ozone
CN105293526A (en) * 2015-10-26 2016-02-03 天津科技大学 Method for purifying iodine in saline water of ionic membrane caustic soda production process
CN105293779B (en) * 2015-11-24 2017-11-17 天津科技大学 The cleaning equipment and operating method of iodine in ion film caustic soda production technology salt solution

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1944423A (en) * 1927-03-05 1934-01-23 Gen Salt Company Recovery of iodine
DE3108991A1 (en) * 1981-03-10 1982-09-23 Gesellschaft für Strahlen- und Umweltforschung mbH, 8000 München METHOD FOR SEPARATING AND COLLECTING IODINE
JPS59162285A (en) * 1983-03-04 1984-09-13 Asahi Chem Ind Co Ltd Method for electrolyzing salt by ion exchange membrane method
JPH0712427B2 (en) * 1985-11-14 1995-02-15 三菱重工業株式会社 Manufacturing method of carbon monoxide adsorbent
JP2569124B2 (en) * 1988-05-23 1997-01-08 三井東圧化学株式会社 Method for recovering iodine from waste liquid containing organic iodine compound
IT1229724B (en) * 1989-05-15 1991-09-07 Solvay PURIFICATION PROCEDURE OF A CHLORIDE AQUEOUS SOLUTION OF AN ALKALINE METAL FROM AMMONIAC AND IODATE COMPOUNDS.
JPH0416554A (en) * 1990-05-07 1992-01-21 Oki Electric Ind Co Ltd Zirconium oxide-based solid solution and thermal head using same

Also Published As

Publication number Publication date
CN1040738C (en) 1998-11-18
FI932936A (en) 1993-12-27
ES2087678T3 (en) 1996-07-16
NO312505B1 (en) 2002-05-21
JPH0791666B2 (en) 1995-10-04
GR3020029T3 (en) 1996-08-31
KR100237429B1 (en) 2000-01-15
FI932936A0 (en) 1993-06-24
NO932247D0 (en) 1993-06-17
DE69301778T2 (en) 1996-10-02
JPH0673588A (en) 1994-03-15
NO932247L (en) 1993-12-30
CN1084824A (en) 1994-04-06
ATE135331T1 (en) 1996-03-15
EP0576335B1 (en) 1996-03-13
DE69301778D1 (en) 1996-04-18
FR2692879A1 (en) 1993-12-31
KR940000370A (en) 1994-01-03
FR2692879B1 (en) 1994-12-02
CA2099184C (en) 1999-10-12
CA2099184A1 (en) 1993-12-27
EP0576335A1 (en) 1993-12-29

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