GB1408523A - Process for regenerating spent photographic silver bleaching solutions - Google Patents
Process for regenerating spent photographic silver bleaching solutionsInfo
- Publication number
- GB1408523A GB1408523A GB2015773A GB2015773A GB1408523A GB 1408523 A GB1408523 A GB 1408523A GB 2015773 A GB2015773 A GB 2015773A GB 2015773 A GB2015773 A GB 2015773A GB 1408523 A GB1408523 A GB 1408523A
- Authority
- GB
- United Kingdom
- Prior art keywords
- alkali metal
- solution
- concentration
- bleaching
- redox potential
- 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
- 238000004061 bleaching Methods 0.000 title abstract 10
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 title abstract 4
- 230000001172 regenerating effect Effects 0.000 title abstract 4
- 229910052709 silver Inorganic materials 0.000 title abstract 4
- 239000004332 silver Substances 0.000 title abstract 4
- 238000000034 method Methods 0.000 title 1
- 239000000243 solution Substances 0.000 abstract 11
- -1 alkali metal ferricyanide Chemical class 0.000 abstract 5
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 abstract 4
- 229910052783 alkali metal Inorganic materials 0.000 abstract 4
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 abstract 4
- 229910052794 bromium Inorganic materials 0.000 abstract 4
- CPELXLSAUQHCOX-UHFFFAOYSA-N Hydrogen bromide Chemical compound Br CPELXLSAUQHCOX-UHFFFAOYSA-N 0.000 abstract 3
- SXDBWCPKPHAZSM-UHFFFAOYSA-M bromate Inorganic materials [O-]Br(=O)=O SXDBWCPKPHAZSM-UHFFFAOYSA-M 0.000 abstract 3
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical compound [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 abstract 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 abstract 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 abstract 2
- 229910001513 alkali metal bromide Inorganic materials 0.000 abstract 2
- 239000000276 potassium ferrocyanide Substances 0.000 abstract 2
- 238000010405 reoxidation reaction Methods 0.000 abstract 2
- XOGGUFAVLNCTRS-UHFFFAOYSA-N tetrapotassium;iron(2+);hexacyanide Chemical compound [K+].[K+].[K+].[K+].[Fe+2].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-] XOGGUFAVLNCTRS-UHFFFAOYSA-N 0.000 abstract 2
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical class [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 abstract 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 abstract 1
- 239000002253 acid Substances 0.000 abstract 1
- 239000013543 active substance Substances 0.000 abstract 1
- 229910001508 alkali metal halide Inorganic materials 0.000 abstract 1
- 150000008045 alkali metal halides Chemical class 0.000 abstract 1
- 239000007864 aqueous solution Substances 0.000 abstract 1
- 230000003139 buffering effect Effects 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 229910000042 hydrogen bromide Inorganic materials 0.000 abstract 1
- 229910000041 hydrogen chloride Inorganic materials 0.000 abstract 1
- 239000007800 oxidant agent Substances 0.000 abstract 1
- 235000011007 phosphoric acid Nutrition 0.000 abstract 1
- 230000000087 stabilizing effect Effects 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
- G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
- G03C5/26—Processes using silver-salt-containing photosensitive materials or agents therefor
- G03C5/395—Regeneration of photographic processing agents other than developers; Replenishers therefor
- G03C5/3952—Chemical, mechanical or thermal methods, e.g. oxidation, precipitation, centrifugation
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19722220667 DE2220667A1 (de) | 1972-04-27 | 1972-04-27 | Verfahren zum regenerieren von gebrauchten fotografischen silberbleichloesungen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1408523A true GB1408523A (en) | 1975-10-01 |
Family
ID=5843441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2015773A Expired GB1408523A (en) | 1972-04-27 | 1973-04-27 | Process for regenerating spent photographic silver bleaching solutions |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US3839043A (enrdf_load_stackoverflow) |
| JP (1) | JPS4942347A (enrdf_load_stackoverflow) |
| BE (1) | BE798381A (enrdf_load_stackoverflow) |
| CH (1) | CH577697A5 (enrdf_load_stackoverflow) |
| DE (1) | DE2220667A1 (enrdf_load_stackoverflow) |
| FR (1) | FR2182174B3 (enrdf_load_stackoverflow) |
| GB (1) | GB1408523A (enrdf_load_stackoverflow) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS556269Y2 (enrdf_load_stackoverflow) * | 1974-06-07 | 1980-02-13 | ||
| CN102378736B (zh) * | 2009-02-09 | 2015-09-09 | 溴化合物有限公司 | 制备分子溴的方法与装置 |
| US20250019254A1 (en) * | 2023-07-14 | 2025-01-16 | Ripcord Energy Solutions, LLC | Adsorption of carbon dioxide from natural gas into caustic and precipitation as calcium carbonate and methods thereof |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2515930A (en) * | 1946-05-04 | 1950-07-18 | Pavelle Color Inc | Regeneration of photographic silver bleach solution |
| BE500332A (enrdf_load_stackoverflow) * | 1949-12-30 | |||
| US3615507A (en) * | 1968-12-13 | 1971-10-26 | Eastman Kodak Co | Photographic bleach-fix solutions |
| UST878007I4 (en) * | 1970-01-29 | 1970-09-08 | Defensive publication | |
| US3770437A (en) * | 1972-04-06 | 1973-11-06 | D Brugger | Photographic bleach compositions |
-
1972
- 1972-04-27 DE DE19722220667 patent/DE2220667A1/de active Pending
-
1973
- 1973-04-18 BE BE1004978A patent/BE798381A/xx unknown
- 1973-04-20 US US00353101A patent/US3839043A/en not_active Expired - Lifetime
- 1973-04-26 CH CH601673A patent/CH577697A5/xx not_active IP Right Cessation
- 1973-04-26 JP JP48048259A patent/JPS4942347A/ja active Pending
- 1973-04-27 GB GB2015773A patent/GB1408523A/en not_active Expired
- 1973-04-27 FR FR7315314A patent/FR2182174B3/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CH577697A5 (enrdf_load_stackoverflow) | 1976-07-15 |
| FR2182174B3 (enrdf_load_stackoverflow) | 1976-04-16 |
| JPS4942347A (enrdf_load_stackoverflow) | 1974-04-20 |
| BE798381A (nl) | 1973-10-18 |
| DE2220667A1 (de) | 1973-11-08 |
| US3839043A (en) | 1974-10-01 |
| FR2182174A1 (enrdf_load_stackoverflow) | 1973-12-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |