GB905615A - Improvements in or relating to treatment of toxic copper-containing solutions - Google Patents
Improvements in or relating to treatment of toxic copper-containing solutionsInfo
- Publication number
- GB905615A GB905615A GB4017/61A GB401761A GB905615A GB 905615 A GB905615 A GB 905615A GB 4017/61 A GB4017/61 A GB 4017/61A GB 401761 A GB401761 A GB 401761A GB 905615 A GB905615 A GB 905615A
- Authority
- GB
- United Kingdom
- Prior art keywords
- copper
- heating
- sulphate
- solution
- ammonium persulphate
- 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
- 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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G3/00—Compounds of copper
- C01G3/02—Oxides; Hydroxides
-
- 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
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/025—Thermal hydrolysis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Inorganic Chemistry (AREA)
- Removal Of Specific Substances (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Copper oxide and ammonia are obtained by adding an excess of sodium hydroxide to an ammonium persulphate solution containing copper salts and heating, preferably to boiling. Ammonia is evolved and cupric hydroxide which is formed is decomposed to cupric oxide which is removed by filtration or centrifuging. The solution may be a spent ammonium persulphate copper etching solution containing cuprammonium sulphate, copper sulphate, ammonium sulphate, sulphuric acid, ammonium persulphate. The heating may be at temperatures from 25-100 DEG C. Sodium hydroxide solution may be added during the heating to maintain an excess and a minimum pH of 12 or sufficient may be added originally. The supernatent solution remaining may be neutralized, e.g. with sulphuric acid, and discarded as non-toxic waste.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US1824060A | 1960-03-29 | 1960-03-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB905615A true GB905615A (en) | 1962-09-12 |
Family
ID=21786937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4017/61A Expired GB905615A (en) | 1960-03-29 | 1961-02-02 | Improvements in or relating to treatment of toxic copper-containing solutions |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3218254A (en) |
| CH (1) | CH409799A (en) |
| DE (1) | DE1517681A1 (en) |
| FR (1) | FR1295376A (en) |
| GB (1) | GB905615A (en) |
| NL (2) | NL121499C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL6603696A (en) * | 1965-04-28 | 1966-10-31 | ||
| DE2524546C3 (en) * | 1975-06-03 | 1983-05-19 | Th. Goldschmidt Ag, 4300 Essen | Process for the reprocessing of copper etching waste solutions |
| CN103214125A (en) * | 2013-03-21 | 2013-07-24 | 东阳市清源环保科技有限公司 | Recovery and treatment method for copper ammonia in D-p-methylsulfonylphenyl serine ethyl ester production wastewater |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1867357A (en) * | 1927-02-23 | 1932-07-12 | Furness Corp | Method of making coper hydroxide |
| US2904399A (en) * | 1954-10-09 | 1959-09-15 | Bemberg Ag | Recovery of copper and ammonia from waste liquors from the manufacture of regenerated cellulose |
-
0
- NL NL262660D patent/NL262660A/xx unknown
- NL NL121499D patent/NL121499C/xx active
-
1961
- 1961-02-02 GB GB4017/61A patent/GB905615A/en not_active Expired
- 1961-02-04 DE DE19611517681 patent/DE1517681A1/en active Pending
- 1961-02-14 CH CH174461A patent/CH409799A/en unknown
- 1961-02-17 FR FR853014A patent/FR1295376A/en not_active Expired
-
1962
- 1962-11-20 US US239091A patent/US3218254A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CH409799A (en) | 1966-03-15 |
| US3218254A (en) | 1965-11-16 |
| DE1517681A1 (en) | 1969-05-14 |
| FR1295376A (en) | 1962-06-08 |
| NL262660A (en) | |
| NL121499C (en) |
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