GB1028161A - Method of decontaminating aqueous solutions of nitrites of alkali metals and/or alkaline earth metals - Google Patents
Method of decontaminating aqueous solutions of nitrites of alkali metals and/or alkaline earth metalsInfo
- Publication number
- GB1028161A GB1028161A GB309663A GB309663A GB1028161A GB 1028161 A GB1028161 A GB 1028161A GB 309663 A GB309663 A GB 309663A GB 309663 A GB309663 A GB 309663A GB 1028161 A GB1028161 A GB 1028161A
- Authority
- GB
- United Kingdom
- Prior art keywords
- alkaline earth
- aqueous solutions
- solution
- acid
- nitrites
- 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
- C02F1/70—Treatment of water, waste water, or sewage by reduction
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Removal Of Specific Substances (AREA)
Abstract
Alkali metal and/or alkaline earth metal nitriles are removed from aqueous solutions, particularly industrial waste solutions, by adding to the solution in the presence of excess acid ions a decontaminating agent consisting of (a) sufficient mineral acid to convert the total metallic nitrite to nitrous acid and (b) sufficient of compound RNH2, where R is H or an organic radical, to convert all the nitrous acid to free nitrogen, or consisting of a salt of the reaction (a) with (b), the pH of the solution being used as a retro-active control of the supply of the decontaminating agent; the latter may be ammonium chloride or preferably hydrochloric acid plus urea, which mixture when used in a ratio 2: 1 to 3: 1 provides also the required excess acid ions. The reaction produces nitrogen, and a nitrite-free solution which may be discarded into public drainage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB309663A GB1028161A (en) | 1963-01-24 | 1963-01-24 | Method of decontaminating aqueous solutions of nitrites of alkali metals and/or alkaline earth metals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB309663A GB1028161A (en) | 1963-01-24 | 1963-01-24 | Method of decontaminating aqueous solutions of nitrites of alkali metals and/or alkaline earth metals |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1028161A true GB1028161A (en) | 1966-05-04 |
Family
ID=9751869
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB309663A Expired GB1028161A (en) | 1963-01-24 | 1963-01-24 | Method of decontaminating aqueous solutions of nitrites of alkali metals and/or alkaline earth metals |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1028161A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2630727A1 (en) * | 1988-05-02 | 1989-11-03 | Wieland Edelmetalle | METHOD AND DEVICE FOR THE TREATMENT OF WASTEWATER WITH NITRITES |
-
1963
- 1963-01-24 GB GB309663A patent/GB1028161A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2630727A1 (en) * | 1988-05-02 | 1989-11-03 | Wieland Edelmetalle | METHOD AND DEVICE FOR THE TREATMENT OF WASTEWATER WITH NITRITES |
| DE3814819A1 (en) * | 1988-05-02 | 1989-11-16 | Wieland Edelmetalle | METHOD AND DEVICE FOR TREATING NITRITE CONTAINERS |
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