ES8102599A1 - Procedimiento electroquimico de regenerar banos de acido cromico usados y perfeccionamientos en las celulas de elec- trodialisis - Google Patents
Procedimiento electroquimico de regenerar banos de acido cromico usados y perfeccionamientos en las celulas de elec- trodialisisInfo
- Publication number
- ES8102599A1 ES8102599A1 ES490005A ES490005A ES8102599A1 ES 8102599 A1 ES8102599 A1 ES 8102599A1 ES 490005 A ES490005 A ES 490005A ES 490005 A ES490005 A ES 490005A ES 8102599 A1 ES8102599 A1 ES 8102599A1
- Authority
- ES
- Spain
- Prior art keywords
- chromic acid
- regeneration
- acid baths
- catholyte
- baths
- 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.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D21/00—Processes for servicing or operating cells for electrolytic coating
- C25D21/16—Regeneration of process solutions
- C25D21/18—Regeneration of process solutions of electrolytes
-
- 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
- Y10S204/00—Chemistry: electrical and wave energy
- Y10S204/13—Purification and treatment of electroplating baths and plating wastes
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
PROCEDIMIENTO ELECTROQUIMICO PARA REGENERAR BAÑOS DE ACIDO CROMICO USADOS. SE HACE CIRCULAR UN BAÑO DE ACIDO CROMICO A TRAVES DEL COMPORAMIENTO ANODICO DE LA CELULA DE ELECTRODIALISIS, EN CONTACTO CON EL ANODO. ASIMISMO, SE HACE CIRCULAR, A TRAVES DEL COMPARTIMENTO CATODICO, UN CATOLITO, CONSTITUIDO POR UNA SOLUCION ACUOSA, MODERADAMENTE ACIDA, DE UNA SAL INORGANICA SOLUBLE EN AGUA. LA CELULA ES SOMETIDA DURANTE EL PROCESO A UN CIERTO POTENCIAL ELECTRICO QUE HACE QUE EL CROMO TRIVALENTE DEL BAÑO SE OXIDE A CROMO HEXAVALENTE, Y QUE LOS IONES METALICOS CONTAMINANTES DEL BAÑO ATRAVIESEN LA MEMBRANA PERMEABLE EXISTENTE ENTRE AMBOS COMPARTIMENTOS DE LA CELULA. ES DE APLICACION EN LA REGENERACION DE BAÑOS DE ACIDO CROMICO EMPLEADOS EN EL DECAPADO DE METALES, EN EL MORDENTADO DE PLASTICOS Y EN EL ANODIZADO DE ALUMINIO Y SIMILARES.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/025,381 US4243501A (en) | 1979-03-30 | 1979-03-30 | Process and apparatus for the regeneration of chromic acid baths |
Publications (2)
Publication Number | Publication Date |
---|---|
ES490005A0 ES490005A0 (es) | 1981-02-16 |
ES8102599A1 true ES8102599A1 (es) | 1981-02-16 |
Family
ID=21825702
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES490005A Expired ES8102599A1 (es) | 1979-03-30 | 1980-03-27 | Procedimiento electroquimico de regenerar banos de acido cromico usados y perfeccionamientos en las celulas de elec- trodialisis |
Country Status (13)
Country | Link |
---|---|
US (1) | US4243501A (es) |
AU (1) | AU517783B2 (es) |
BR (1) | BR8001824A (es) |
CA (1) | CA1141701A (es) |
DE (1) | DE3009956C2 (es) |
DK (1) | DK137280A (es) |
ES (1) | ES8102599A1 (es) |
FR (1) | FR2452303A1 (es) |
GB (1) | GB2046793B (es) |
IT (1) | IT1128101B (es) |
MX (1) | MX153036A (es) |
NO (1) | NO155451C (es) |
SE (1) | SE446198B (es) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4318789A (en) * | 1979-08-20 | 1982-03-09 | Kennecott Corporation | Electrochemical removal of heavy metals such as chromium from dilute wastewater streams using flow through porous electrodes |
US4670118A (en) * | 1981-01-02 | 1987-06-02 | Dorr-Oliver Incorporated | Electrode assembly and process for electrically augmented vacuum filtration |
US4439293A (en) * | 1981-03-09 | 1984-03-27 | Vaughan Daniel J | Electrodialytic purification process |
US4636288A (en) * | 1984-01-06 | 1987-01-13 | Vaughan Daniel J | Electrodialytic conversion of multivalent metal salts |
US4701246A (en) * | 1985-03-07 | 1987-10-20 | Kabushiki Kaisha Toshiba | Method for production of decontaminating liquid |
US4654137A (en) * | 1985-04-15 | 1987-03-31 | Vaughan Daniel J | Multicompartmented cell with freely-extendible tubular membrane |
DE4007297C2 (de) * | 1990-03-08 | 1995-12-14 | Heraeus Elektrochemie | Elektrolysezelle zur elektrolytischen Behandlung von Prozeßflüssigkeit |
GB2248070A (en) * | 1990-09-20 | 1992-03-25 | Huang Yun Fu | An apparatus for removing impurities contained in chrome plating bath |
US5246559A (en) * | 1991-11-29 | 1993-09-21 | Eltech Systems Corporation | Electrolytic cell apparatus |
DE4315411C2 (de) * | 1993-05-10 | 1995-04-27 | Lpw Anlagen Gmbh | Verfahren zur Regenerierung von verbrauchten Chromsäurelösungen |
US6063252A (en) * | 1997-08-08 | 2000-05-16 | Raymond; John L. | Method and apparatus for enriching the chromium in a chromium plating bath |
GB2399349A (en) * | 2003-03-13 | 2004-09-15 | Kurion Technologies Ltd | Regeneration of chromic acid etching and pickling baths |
KR100790889B1 (ko) * | 2006-09-26 | 2008-01-02 | 삼성전자주식회사 | 전기 투석 장치 및 이를 이용한 전기 투석 방법 |
EP3825441A1 (en) | 2019-11-21 | 2021-05-26 | COVENTYA S.p.A. | An electrolytic treatment device for preparing plastic parts to be metallized and a method for etching plastic parts |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT213191B (de) * | 1958-06-19 | 1961-01-25 | Chem Fab Budenheim Ag | Verfahren zum Regenerieren von Beizsäuren |
US3375179A (en) * | 1964-10-29 | 1968-03-26 | Litton Systems Inc | Method of anodizing beryllium and product thereof |
GB1388204A (en) * | 1971-04-05 | 1975-03-26 | Fuji Kuromu Sha Kk | Process for the treatment of exhausted chromium-plating solutions |
US3761369A (en) * | 1971-10-18 | 1973-09-25 | Electrodies Inc | Process for the electrolytic reclamation of spent etching fluids |
US3764503A (en) * | 1972-01-19 | 1973-10-09 | Dart Ind Inc | Electrodialysis regeneration of metal containing acid solutions |
US4006067A (en) * | 1973-03-05 | 1977-02-01 | Gussack Mark C | Oxidation-reduction process |
US3948738A (en) * | 1974-01-29 | 1976-04-06 | Kabushiki Kaisha Fuji Kuromu Sha | Process for the regeneration of exhausted chromium-plating solutions by two-stage diaphragm electrolysis |
US3909381A (en) * | 1974-11-18 | 1975-09-30 | Raymond John L | Purification of chromium plating solutions by electrodialysis |
US4118295A (en) * | 1976-04-20 | 1978-10-03 | Dart Industries Inc. | Regeneration of plastic etchants |
-
1979
- 1979-03-30 US US06/025,381 patent/US4243501A/en not_active Expired - Lifetime
-
1980
- 1980-03-04 AU AU56124/80A patent/AU517783B2/en not_active Ceased
- 1980-03-06 CA CA000347111A patent/CA1141701A/en not_active Expired
- 1980-03-14 DE DE3009956A patent/DE3009956C2/de not_active Expired
- 1980-03-14 IT IT48172/80A patent/IT1128101B/it active
- 1980-03-26 BR BR8001824A patent/BR8001824A/pt unknown
- 1980-03-27 ES ES490005A patent/ES8102599A1/es not_active Expired
- 1980-03-27 GB GB8010346A patent/GB2046793B/en not_active Expired
- 1980-03-28 SE SE8002396A patent/SE446198B/sv not_active IP Right Cessation
- 1980-03-28 FR FR8007027A patent/FR2452303A1/fr active Granted
- 1980-03-28 MX MX181771A patent/MX153036A/es unknown
- 1980-03-28 NO NO800904A patent/NO155451C/no unknown
- 1980-03-28 DK DK137280A patent/DK137280A/da not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
US4243501A (en) | 1981-01-06 |
FR2452303B1 (es) | 1983-04-29 |
ES490005A0 (es) | 1981-02-16 |
MX153036A (es) | 1986-07-22 |
NO155451B (no) | 1986-12-22 |
CA1141701A (en) | 1983-02-22 |
SE8002396L (sv) | 1980-10-01 |
DE3009956C2 (de) | 1986-04-24 |
AU517783B2 (en) | 1981-08-27 |
DE3009956A1 (de) | 1980-10-09 |
NO800904L (no) | 1980-10-01 |
BR8001824A (pt) | 1980-11-18 |
IT1128101B (it) | 1986-05-28 |
DK137280A (da) | 1980-10-01 |
NO155451C (no) | 1987-04-01 |
FR2452303A1 (fr) | 1980-10-24 |
GB2046793B (en) | 1983-05-05 |
GB2046793A (en) | 1980-11-19 |
SE446198B (sv) | 1986-08-18 |
IT8048172A0 (it) | 1980-03-14 |
AU5612480A (en) | 1980-10-02 |
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