GB1350703A - Process for reclaiming silver and or mercury values from effluent - Google Patents
Process for reclaiming silver and or mercury values from effluentInfo
- Publication number
- GB1350703A GB1350703A GB3072371A GB3072371A GB1350703A GB 1350703 A GB1350703 A GB 1350703A GB 3072371 A GB3072371 A GB 3072371A GB 3072371 A GB3072371 A GB 3072371A GB 1350703 A GB1350703 A GB 1350703A
- Authority
- GB
- United Kingdom
- Prior art keywords
- effluent
- flocculating agent
- values
- precipitated
- precipitate
- 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
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 title abstract 2
- 229910052753 mercury Inorganic materials 0.000 title abstract 2
- 229910052709 silver Inorganic materials 0.000 title abstract 2
- 239000004332 silver Substances 0.000 title abstract 2
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 abstract 6
- 239000008394 flocculating agent Substances 0.000 abstract 4
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 abstract 2
- 239000003638 chemical reducing agent Substances 0.000 abstract 2
- 229910052751 metal Inorganic materials 0.000 abstract 2
- 239000002184 metal Substances 0.000 abstract 2
- 229920002401 polyacrylamide Polymers 0.000 abstract 2
- 239000002244 precipitate Substances 0.000 abstract 2
- 101710134784 Agnoprotein Proteins 0.000 abstract 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 abstract 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 abstract 1
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical class [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 abstract 1
- 235000011128 aluminium sulphate Nutrition 0.000 abstract 1
- 159000000009 barium salts Chemical class 0.000 abstract 1
- 229910052791 calcium Inorganic materials 0.000 abstract 1
- 239000011575 calcium Substances 0.000 abstract 1
- 235000001465 calcium Nutrition 0.000 abstract 1
- 235000003891 ferrous sulphate Nutrition 0.000 abstract 1
- 239000000706 filtrate Substances 0.000 abstract 1
- 238000001914 filtration Methods 0.000 abstract 1
- 239000003295 industrial effluent Substances 0.000 abstract 1
- 239000012452 mother liquor Substances 0.000 abstract 1
- 239000002667 nucleating agent Substances 0.000 abstract 1
- 238000001556 precipitation Methods 0.000 abstract 1
- 238000011084 recovery Methods 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B43/00—Obtaining mercury
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G13/00—Compounds of mercury
- C01G13/003—Preparation involving a liquid-liquid extraction, an adsorption or an ion-exchange
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B11/00—Obtaining noble metals
- C22B11/04—Obtaining noble metals by wet processes
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/20—Treatment or purification of solutions, e.g. obtained by leaching
- C22B3/42—Treatment or purification of solutions, e.g. obtained by leaching by ion-exchange extraction
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/20—Treatment or purification of solutions, e.g. obtained by leaching
- C22B3/44—Treatment or purification of solutions, e.g. obtained by leaching by chemical processes
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Metallurgy (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Removal Of Specific Substances (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
1350703 Recovery of Hg and/or Ag values from effluents E B BURDON ENGS Ltd 30 June 1971 [6 May 1971] 30723/71 Headings C1A and C1C [Also in Division C7] Hg and/or Ag values are recovered from an aqueous industrial effluent by treating the effluent with a reducing agent capable of converting the metal value from the ionic or complex ionic form in which it is present in the effluent to an insoluble form and adding an organic flocculating agent, so that the insoluble form of the metal is precipitated with the organic flocculating agent, the precipitate being then separated from the attendant mother liquor. Inorganic nucleating agents may be added, e.g. ferrous or aluminium sulphates or calcium or barium salts, to aid precipitation. The reducing agent may be Na 2 S 2 O 4 or hydrazine. Silver in a photographic effluent containing AgNO 3 is first treated with Na 2 S 2 O 4 and Fe 2 (SO 4 ) 3 containing HCl and then with NaOH to a pH of 8À5 and a flocculating agent added. Mercury effluent may be treated in two stages (i) firstly by adding NaOH to bring the pH to 10-11, then adding HCl to a pH of 4-5 and finally adding a polyacrylamide flocculating agent whereby the Hg 2 Cl 2 is precipitated, (ii) by adding to the resulting filtrate first Na 2 S 2 O 4 then Al 2 (SO 4 ) 3 and polyacrylamide and finally adjusting the pH to 3-5 before separating the precipitate by filtration.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19712122415 DE2122415A1 (en) | 1971-05-06 | 1971-05-06 | Process for detoxifying, clarifying and recovering metal salts from waste water and residual concentrates by reducing them to the metals using hydrosulfite conc. (Sodium dithionite) or hydrazine with simultaneous use of a vaccine and sedimentation accelerator to shorten the precipitation time and reduce the volume of the sludge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1350703A true GB1350703A (en) | 1974-04-24 |
Family
ID=5807044
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3072371A Expired GB1350703A (en) | 1971-05-06 | 1971-06-30 | Process for reclaiming silver and or mercury values from effluent |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE2122415A1 (en) |
| GB (1) | GB1350703A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2133807A (en) * | 1982-12-13 | 1984-08-01 | Us Energy | Method for the recovery of silver from waste photographic fixer solutions |
| US5976383A (en) * | 1991-04-08 | 1999-11-02 | Romar Technologies, Inc. | Recycle process for removing dissolved heavy metals from water with aluminum particles |
| CN105016532A (en) * | 2015-08-13 | 2015-11-04 | 安徽工程大学 | Treatment method of low concentration waste water with complexing copper |
| WO2018109378A1 (en) | 2016-12-13 | 2018-06-21 | Suez Rr Iws Remediation France | Mixture for treating mercury-polluted water, device for treating mercury-polluted water using such a mixture and method for treating mercury-polluted water by means of such a device |
| CN116005001A (en) * | 2022-12-28 | 2023-04-25 | 安徽工业大学 | A method for recovering high-purity nano-copper from electroplating wastewater |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3347385A1 (en) * | 1983-12-29 | 1985-07-11 | Inovan-Stroebe GmbH & Co KG, 7534 Birkenfeld | Process for the treatment of metal-containing effluent |
| DE4013974C1 (en) * | 1990-04-30 | 1991-09-19 | Guenter Dipl.-Ing. 5100 Aachen De Straten | |
| DE4136939A1 (en) * | 1990-11-22 | 1992-05-27 | Sandoz Ag | METHOD FOR PURIFYING COPPER CONTAINING INDUSTRIAL WASTEWATER |
| US5122279A (en) * | 1991-04-08 | 1992-06-16 | Romar Technologies Inc. | Ferrous dithionite process and compositions for removing dissolved heavy metals from water |
-
1971
- 1971-05-06 DE DE19712122415 patent/DE2122415A1/en active Pending
- 1971-06-30 GB GB3072371A patent/GB1350703A/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2133807A (en) * | 1982-12-13 | 1984-08-01 | Us Energy | Method for the recovery of silver from waste photographic fixer solutions |
| US5976383A (en) * | 1991-04-08 | 1999-11-02 | Romar Technologies, Inc. | Recycle process for removing dissolved heavy metals from water with aluminum particles |
| CN105016532A (en) * | 2015-08-13 | 2015-11-04 | 安徽工程大学 | Treatment method of low concentration waste water with complexing copper |
| WO2018109378A1 (en) | 2016-12-13 | 2018-06-21 | Suez Rr Iws Remediation France | Mixture for treating mercury-polluted water, device for treating mercury-polluted water using such a mixture and method for treating mercury-polluted water by means of such a device |
| CN116005001A (en) * | 2022-12-28 | 2023-04-25 | 安徽工业大学 | A method for recovering high-purity nano-copper from electroplating wastewater |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2122415A1 (en) | 1972-11-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 429A | Application made for amendment of specification (sect. 29/1949) | ||
| 429H | Application (made) for amendment of specification now open to opposition (sect. 29/1949) | ||
| 429D | Case decided by the comptroller ** specification amended (sect. 29/1949) | ||
| PS | Patent sealed | ||
| PLE | Entries relating assignments, transmissions, licences in the register of patents |