GB1394909A - Removal and recovery of chromium from polluted waters - Google Patents
Removal and recovery of chromium from polluted watersInfo
- Publication number
- GB1394909A GB1394909A GB3119873A GB3119873A GB1394909A GB 1394909 A GB1394909 A GB 1394909A GB 3119873 A GB3119873 A GB 3119873A GB 3119873 A GB3119873 A GB 3119873A GB 1394909 A GB1394909 A GB 1394909A
- Authority
- GB
- United Kingdom
- Prior art keywords
- chromium
- peat
- water
- precipitating agent
- sulphide
- 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
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 title abstract 2
- 229910052804 chromium Inorganic materials 0.000 title abstract 2
- 239000011651 chromium Substances 0.000 title abstract 2
- 238000011084 recovery Methods 0.000 title 1
- 239000003643 water by type Substances 0.000 title 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 8
- 239000003415 peat Substances 0.000 abstract 7
- 239000003795 chemical substances by application Substances 0.000 abstract 4
- 230000001376 precipitating effect Effects 0.000 abstract 4
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 abstract 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 2
- 229910001430 chromium ion Inorganic materials 0.000 abstract 2
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 abstract 2
- 229910052753 mercury Inorganic materials 0.000 abstract 2
- 150000003839 salts Chemical class 0.000 abstract 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 abstract 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 abstract 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract 1
- 229910002651 NO3 Inorganic materials 0.000 abstract 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 abstract 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 abstract 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 abstract 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 abstract 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 abstract 1
- 239000005864 Sulphur Substances 0.000 abstract 1
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 abstract 1
- PTFCDOFLOPIGGS-UHFFFAOYSA-N Zinc dication Chemical compound [Zn+2] PTFCDOFLOPIGGS-UHFFFAOYSA-N 0.000 abstract 1
- 238000005273 aeration Methods 0.000 abstract 1
- 125000000217 alkyl group Chemical group 0.000 abstract 1
- 239000007864 aqueous solution Substances 0.000 abstract 1
- 229910052793 cadmium Inorganic materials 0.000 abstract 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 abstract 1
- 229910000423 chromium oxide Inorganic materials 0.000 abstract 1
- VCEULKUMMKAWND-UHFFFAOYSA-N chromium;sulfanylideneiron Chemical compound [Cr].[Fe]=S VCEULKUMMKAWND-UHFFFAOYSA-N 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 abstract 1
- 229910052802 copper Inorganic materials 0.000 abstract 1
- 239000010949 copper Substances 0.000 abstract 1
- 238000001035 drying Methods 0.000 abstract 1
- 239000003546 flue gas Substances 0.000 abstract 1
- 229910052742 iron Inorganic materials 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 229910021645 metal ion Inorganic materials 0.000 abstract 1
- 229910044991 metal oxide Inorganic materials 0.000 abstract 1
- 150000004706 metal oxides Chemical class 0.000 abstract 1
- 150000002739 metals Chemical class 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 230000001590 oxidative effect Effects 0.000 abstract 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 abstract 1
- 229920001021 polysulfide Polymers 0.000 abstract 1
- 239000000243 solution Substances 0.000 abstract 1
- 229910021653 sulphate ion Inorganic materials 0.000 abstract 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/286—Treatment of water, waste water, or sewage by sorption using natural organic sorbents or derivatives thereof
-
- 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)
- Water Supply & Treatment (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Removal Of Specific Substances (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Water Treatment By Sorption (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Treating Waste Gases (AREA)
Abstract
1394909 Removing and recovering chromium from aqueous solutions UNIVERSITE DE SHERBROOKE 29 June 1973 [7 July 1972] 31198/73 Headings C1C and C1A Chromium ions are removed from chromiumpolluted water by adding to the water a watersoluble ferric salt and causing the resulting solution and a sulphur-containing precipitating agent to diffuse through peat, the ratio of peat to precipitating agent being at least 15 : 1 by weight, whereby an insoluble complex chromium-iron sulphide is formed and is adsorbed on the peat and chromium- and iron-free water is recovered. The precipitating agent may be sodium sulphide, ammonium polysulphide or a compound R-SH where R is alkyl or phenyl. Where the precipitating agent is sodium sulphide, the chromium-polluted water may be diffused through peat which has been previously impregnated with sodium sulphide or the sodium sulphide is added to the water before diffusing through the peat. The ferric salt may be the nitrate, sulphate or chloride. In addition to the chromium ions, other metal ions present in the water, such as copper, lead, mercury, cadmium, iron and zinc ions are removed by the above process. The metal-free water may be aftertreated by aeration or treatment with ozone. Chromium oxide and other metal oxides corresponding to the metals in the polluted water are recovered by partly drying the peat containing the compex sulphide and then oxidizing the peat in a furnace. The flue gases produced are preferably pyrolysed, especially when mercury is present.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US26986272A | 1972-07-07 | 1972-07-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1394909A true GB1394909A (en) | 1975-05-21 |
Family
ID=23028959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3119873A Expired GB1394909A (en) | 1972-07-07 | 1973-06-29 | Removal and recovery of chromium from polluted waters |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JPS5529934B2 (en) |
| CA (1) | CA1026472A (en) |
| CH (1) | CH575347A5 (en) |
| DE (1) | DE2334520A1 (en) |
| FR (1) | FR2192071B1 (en) |
| GB (1) | GB1394909A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1055953B (en) * | 1976-02-24 | 1982-01-11 | Stoppani P & Co | DECONTAMINATION PROCESS OF WASTE MATERIAL COMING FROM THE PROCESSING OF CHROME MINERALS THROUGH WET CONZOLFO TREATMENT |
| JPS58153568U (en) * | 1982-04-05 | 1983-10-14 | 三菱電機株式会社 | Centering device for rotating electrical machines |
-
1973
- 1973-06-11 CA CA173,749A patent/CA1026472A/en not_active Expired
- 1973-06-25 CH CH922573A patent/CH575347A5/xx not_active IP Right Cessation
- 1973-06-29 GB GB3119873A patent/GB1394909A/en not_active Expired
- 1973-07-05 FR FR7324783A patent/FR2192071B1/fr not_active Expired
- 1973-07-06 JP JP7642073A patent/JPS5529934B2/ja not_active Expired
- 1973-07-06 DE DE19732334520 patent/DE2334520A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5529934B2 (en) | 1980-08-07 |
| DE2334520A1 (en) | 1974-01-24 |
| CA1026472A (en) | 1978-02-14 |
| FR2192071A1 (en) | 1974-02-08 |
| FR2192071B1 (en) | 1976-11-12 |
| CH575347A5 (en) | 1976-05-14 |
| JPS4964517A (en) | 1974-06-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |