CA2017005A1 - Process for the removal of cyanide from wastewaters - Google Patents
Process for the removal of cyanide from wastewatersInfo
- Publication number
- CA2017005A1 CA2017005A1 CA002017005A CA2017005A CA2017005A1 CA 2017005 A1 CA2017005 A1 CA 2017005A1 CA 002017005 A CA002017005 A CA 002017005A CA 2017005 A CA2017005 A CA 2017005A CA 2017005 A1 CA2017005 A1 CA 2017005A1
- Authority
- CA
- Canada
- Prior art keywords
- cyanide
- hydrogen peroxide
- phosphoric acid
- wastewater
- effluent
- 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.)
- Abandoned
Links
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 title claims abstract description 55
- 238000000034 method Methods 0.000 title claims abstract description 38
- 239000002351 wastewater Substances 0.000 title claims description 17
- 230000008569 process Effects 0.000 title abstract description 11
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 63
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims abstract description 43
- 239000000203 mixture Substances 0.000 claims abstract description 38
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims abstract description 20
- 238000001784 detoxification Methods 0.000 claims abstract description 14
- 239000007787 solid Substances 0.000 claims description 10
- 229910019142 PO4 Inorganic materials 0.000 claims description 9
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 9
- 239000010452 phosphate Substances 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 239000010949 copper Substances 0.000 claims description 5
- 230000003647 oxidation Effects 0.000 claims description 5
- 238000007254 oxidation reaction Methods 0.000 claims description 5
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical compound [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 claims description 4
- 239000003054 catalyst Substances 0.000 claims description 4
- 239000000356 contaminant Substances 0.000 claims description 4
- 238000001556 precipitation Methods 0.000 claims description 4
- 229910001447 ferric ion Inorganic materials 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 230000035484 reaction time Effects 0.000 claims description 3
- 150000003839 salts Chemical class 0.000 claims description 3
- 239000005955 Ferric phosphate Substances 0.000 claims description 2
- 229940032958 ferric phosphate Drugs 0.000 claims description 2
- WBJZTOZJJYAKHQ-UHFFFAOYSA-K iron(3+) phosphate Chemical compound [Fe+3].[O-]P([O-])([O-])=O WBJZTOZJJYAKHQ-UHFFFAOYSA-K 0.000 claims description 2
- 229910000399 iron(III) phosphate Inorganic materials 0.000 claims description 2
- 231100000252 nontoxic Toxicity 0.000 claims description 2
- 230000003000 nontoxic effect Effects 0.000 claims description 2
- 230000001590 oxidative effect Effects 0.000 claims description 2
- 231100000614 poison Toxicity 0.000 claims description 2
- 239000003440 toxic substance Substances 0.000 claims description 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims 1
- 239000000920 calcium hydroxide Substances 0.000 claims 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims 1
- JZCCFEFSEZPSOG-UHFFFAOYSA-L copper(II) sulfate pentahydrate Chemical group O.O.O.O.O.[Cu+2].[O-]S([O-])(=O)=O JZCCFEFSEZPSOG-UHFFFAOYSA-L 0.000 claims 1
- 239000010842 industrial wastewater Substances 0.000 claims 1
- 235000011007 phosphoric acid Nutrition 0.000 description 12
- 239000003153 chemical reaction reagent Substances 0.000 description 7
- 239000002002 slurry Substances 0.000 description 7
- 238000002156 mixing Methods 0.000 description 5
- 239000002699 waste material Substances 0.000 description 5
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 229910052725 zinc Inorganic materials 0.000 description 4
- 239000011701 zinc Substances 0.000 description 4
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical class [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 229910001385 heavy metal Inorganic materials 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical group [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 150000002825 nitriles Chemical class 0.000 description 2
- 150000002978 peroxides Chemical class 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- SXAMGRAIZSSWIH-UHFFFAOYSA-N 2-[3-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]-1,2,4-oxadiazol-5-yl]-1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethanone Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C1=NOC(=N1)CC(=O)N1CC2=C(CC1)NN=N2 SXAMGRAIZSSWIH-UHFFFAOYSA-N 0.000 description 1
- XXZCIYUJYUESMD-UHFFFAOYSA-N 2-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]-3-(morpholin-4-ylmethyl)pyrazol-1-yl]-1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethanone Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C=1C(=NN(C=1)CC(=O)N1CC2=C(CC1)NN=N2)CN1CCOCC1 XXZCIYUJYUESMD-UHFFFAOYSA-N 0.000 description 1
- WWSJZGAPAVMETJ-UHFFFAOYSA-N 2-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]-3-ethoxypyrazol-1-yl]-1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethanone Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C=1C(=NN(C=1)CC(=O)N1CC2=C(CC1)NN=N2)OCC WWSJZGAPAVMETJ-UHFFFAOYSA-N 0.000 description 1
- FYELSNVLZVIGTI-UHFFFAOYSA-N 2-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]-5-ethylpyrazol-1-yl]-1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethanone Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C=1C=NN(C=1CC)CC(=O)N1CC2=C(CC1)NN=N2 FYELSNVLZVIGTI-UHFFFAOYSA-N 0.000 description 1
- ZRPAUEVGEGEPFQ-UHFFFAOYSA-N 2-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]pyrazol-1-yl]-1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethanone Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C=1C=NN(C=1)CC(=O)N1CC2=C(CC1)NN=N2 ZRPAUEVGEGEPFQ-UHFFFAOYSA-N 0.000 description 1
- YJLUBHOZZTYQIP-UHFFFAOYSA-N 2-[5-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]-1,3,4-oxadiazol-2-yl]-1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethanone Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C1=NN=C(O1)CC(=O)N1CC2=C(CC1)NN=N2 YJLUBHOZZTYQIP-UHFFFAOYSA-N 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910001424 calcium ion Inorganic materials 0.000 description 1
- 239000001506 calcium phosphate Substances 0.000 description 1
- 229910000389 calcium phosphate Inorganic materials 0.000 description 1
- 235000011010 calcium phosphates Nutrition 0.000 description 1
- 238000003421 catalytic decomposition reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910001431 copper ion Inorganic materials 0.000 description 1
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 description 1
- 229910000366 copper(II) sulfate Inorganic materials 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 239000012476 oxidizable substance Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- OXNIZHLAWKMVMX-UHFFFAOYSA-N picric acid Chemical compound OC1=C([N+]([O-])=O)C=C([N+]([O-])=O)C=C1[N+]([O-])=O OXNIZHLAWKMVMX-UHFFFAOYSA-N 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000005180 public health Effects 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 description 1
- 230000035899 viability Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/722—Oxidation by peroxides
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S210/00—Liquid purification or separation
- Y10S210/902—Materials removed
- Y10S210/903—Nitrogenous
- Y10S210/904—-CN containing
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Removal Of Specific Substances (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US07/702,120 US5096411A (en) | 1990-05-17 | 1991-05-16 | Injection molding cast manifold |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US354,039 | 1989-05-19 | ||
| US07/354,039 US4966715A (en) | 1989-05-19 | 1989-05-19 | Process for the removal of cyanide from wastewaters |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2017005A1 true CA2017005A1 (en) | 1990-11-19 |
Family
ID=23391642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002017005A Abandoned CA2017005A1 (en) | 1989-05-19 | 1990-05-17 | Process for the removal of cyanide from wastewaters |
Country Status (14)
| Country | Link |
|---|---|
| US (1) | US4966715A (en, 2012) |
| EP (1) | EP0398234B1 (en, 2012) |
| AT (1) | ATE72810T1 (en, 2012) |
| AU (1) | AU623777B2 (en, 2012) |
| BR (1) | BR9002279A (en, 2012) |
| CA (1) | CA2017005A1 (en, 2012) |
| DE (1) | DE69000024D1 (en, 2012) |
| DK (1) | DK0398234T3 (en, 2012) |
| ES (1) | ES2030601T3 (en, 2012) |
| GR (1) | GR3004191T3 (en, 2012) |
| MX (1) | MX165675B (en, 2012) |
| NZ (1) | NZ233711A (en, 2012) |
| ZA (1) | ZA903346B (en, 2012) |
| ZW (1) | ZW8090A1 (en, 2012) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5137642A (en) * | 1992-01-21 | 1992-08-11 | Fmc Corporation | Detoxification of aqueous cyanide solutions |
| US5762808A (en) * | 1995-05-09 | 1998-06-09 | Research Corporation Technologies, Inc. | Destruction of electron affinic contaminants during water treatment using free radical processes |
| US5676846A (en) * | 1996-05-16 | 1997-10-14 | Degussa Corporation | Process for the detoxification of effluents containing free or complexed cyanides |
| EP0811580A3 (en) * | 1996-06-07 | 1998-12-02 | Shiro Yoshizaki | Method for removing heavy metal from sludge |
| WO2000034288A1 (en) * | 1998-12-08 | 2000-06-15 | E.I. Du Pont De Nemours And Company | Process for removal of cyanide from reactions producing 1,3 diones |
| US6623646B2 (en) * | 2000-05-16 | 2003-09-23 | James Daniel Bryant | In-situ chemical oxidation-reduction and precipitation of heavy metals in soils and groundwater |
| EP1638394A4 (en) * | 2003-06-27 | 2009-11-11 | Enviro Tech Chemical Services | HIGHLY CONCENTRATED BROMA COMPOSITIONS AND METHOD FOR THE PRODUCTION THEREOF |
| US8025812B2 (en) * | 2007-04-27 | 2011-09-27 | International Business Machines Corporation | Selective etch of TiW for capture pad formation |
| DE102016004061A1 (de) | 2016-04-08 | 2017-10-12 | Eisenmann Se | Verfahren und Anlage zum Behandeln von cyanidhaltigen Flüssigkeiten |
| CN106269785B (zh) * | 2016-07-29 | 2018-03-30 | 山东国大黄金股份有限公司 | 一种焙烧氰化尾渣清洁转化的方法 |
| JP7157192B2 (ja) * | 2020-03-04 | 2022-10-19 | 日鉄環境株式会社 | 水処理方法 |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1564915A (en, 2012) * | 1968-03-14 | 1969-04-25 | ||
| US3531405A (en) * | 1968-04-03 | 1970-09-29 | Industrial Filter Pump Mfg Co | Method and apparatus for treating waste |
| US3617567A (en) * | 1969-05-15 | 1971-11-02 | Du Pont | Destruction of cyanide in aqueous solutions |
| JPS516462B2 (en, 2012) * | 1972-01-10 | 1976-02-27 | ||
| FR2303766A1 (fr) * | 1975-03-13 | 1976-10-08 | Aquitaine Petrole | Elimination de matieres oxydables des eaux polluees |
| FR2464230A1 (fr) * | 1979-08-31 | 1981-03-06 | Ugine Kuhlmann | Procede d'epuration des eaux residuaires contenant des matieres colorantes |
| US4671882A (en) * | 1983-08-31 | 1987-06-09 | Deere & Company | Phosphoric acid/lime hazardous waste detoxification treatment process |
-
1989
- 1989-05-19 US US07/354,039 patent/US4966715A/en not_active Expired - Fee Related
-
1990
- 1990-05-02 ZA ZA903346A patent/ZA903346B/xx unknown
- 1990-05-14 AT AT90109077T patent/ATE72810T1/de not_active IP Right Cessation
- 1990-05-14 DE DE9090109077T patent/DE69000024D1/de not_active Expired - Lifetime
- 1990-05-14 DK DK90109077.9T patent/DK0398234T3/da active
- 1990-05-14 ES ES199090109077T patent/ES2030601T3/es not_active Expired - Lifetime
- 1990-05-14 EP EP90109077A patent/EP0398234B1/en not_active Expired - Lifetime
- 1990-05-15 MX MX020710A patent/MX165675B/es unknown
- 1990-05-16 BR BR909002279A patent/BR9002279A/pt not_active Application Discontinuation
- 1990-05-17 ZW ZW80/90A patent/ZW8090A1/xx unknown
- 1990-05-17 NZ NZ233711A patent/NZ233711A/xx unknown
- 1990-05-17 CA CA002017005A patent/CA2017005A1/en not_active Abandoned
- 1990-05-18 AU AU55717/90A patent/AU623777B2/en not_active Ceased
-
1992
- 1992-03-31 GR GR920400562T patent/GR3004191T3/el unknown
Also Published As
| Publication number | Publication date |
|---|---|
| ZA903346B (en) | 1991-03-27 |
| AU5571790A (en) | 1990-11-22 |
| DE69000024D1 (de) | 1992-04-02 |
| ATE72810T1 (de) | 1992-03-15 |
| NZ233711A (en) | 1991-06-25 |
| ZW8090A1 (en) | 1992-03-11 |
| GR3004191T3 (en, 2012) | 1993-03-31 |
| DK0398234T3 (da) | 1992-03-23 |
| EP0398234A1 (en) | 1990-11-22 |
| US4966715A (en) | 1990-10-30 |
| ES2030601T3 (es) | 1992-11-01 |
| EP0398234B1 (en) | 1992-02-26 |
| BR9002279A (pt) | 1991-08-06 |
| AU623777B2 (en) | 1992-05-21 |
| MX165675B (es) | 1992-11-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |