GB233840A - Process for the manufacture of active absorbing carbon and phosphoric acid and its compounds - Google Patents
Process for the manufacture of active absorbing carbon and phosphoric acid and its compoundsInfo
- Publication number
- GB233840A GB233840A GB8048/24A GB804824A GB233840A GB 233840 A GB233840 A GB 233840A GB 8048/24 A GB8048/24 A GB 8048/24A GB 804824 A GB804824 A GB 804824A GB 233840 A GB233840 A GB 233840A
- Authority
- GB
- United Kingdom
- Prior art keywords
- phosphoric acid
- treated
- calcium
- magnesium
- bone char
- 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
- C13—SUGAR INDUSTRY
- C13B—PRODUCTION OF SUCROSE; APPARATUS SPECIALLY ADAPTED THEREFOR
- C13B20/00—Purification of sugar juices
- C13B20/12—Purification of sugar juices using adsorption agents, e.g. active carbon
- C13B20/123—Inorganic agents, e.g. active carbon
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/30—Active carbon
- C01B32/312—Preparation
- C01B32/342—Preparation characterised by non-gaseous activating agents
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biochemistry (AREA)
- Water Treatment By Sorption (AREA)
- Removal Of Specific Substances (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
Bone char or bone char dust is leached with a dilute solution of phosphoric acid in order to obtain activated carbon and phosphoric acid. The bone char, which may receive a preliminary re-calcination, is washed with water after leaching and dried and the combined washing water and leaching liquor is treated with sulphuric acid in amount considerably less than the equivalent of the calcium and magnesium present in solution. On evaporation, di-calcium-hydrogen phosphate is precipitated which may be removed and regarded as the finished product or may be decomposed with sulphuric acid to give calcium sulphate and phosphoric acid for re-use. The filtrate from the di-calcium hydrogen phosphate is treated with sulphuric acid in quantity sufficient to precipitate most of the calcium and magnesium as sulphates. The latter are separated and the mother-liquor containing phosphoric acid is treated for the removal of the salts of magnesium and the alkalies which are present. Waste liquors which are too dilute to warrant evaporation may be treated with lime to recover their content of phosphate.ALSO:Bone char or bone char dust is leached with a dilute solution of phosphoric acid in order to obtain activated carbon and phosphoric acid. The bone char which may receive a preliminary re-calcination is washed with water after leaching and dried and the combined washing water and leaching liquor is treated with sulphuric acid in amount considerably less than the equivalent of the calcium and magnesium present in solution. On evaporation dicalcium-hydrogen phosphate is precipitated, which may be removed and regarded as the finished product, or may be decomposed with sulphuric acid to give calcium sulphate and phosphoric acid for re-use. The filtrate from the dicalcium hydrogen phosphate is treated with sulphuric acid in quantity sufficient to precipitate most of the calcium and magnesium as sulphates. The latter are separated and the mother-liquor containing phosphoric acid is treated for the removal of the salts of magnesium and the alkalies which are present. Waste liquors which are too dilute to warrant evaporation may be treated with lime to recover their content of phosphate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8048/24A GB233840A (en) | 1924-03-29 | 1924-03-29 | Process for the manufacture of active absorbing carbon and phosphoric acid and its compounds |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8048/24A GB233840A (en) | 1924-03-29 | 1924-03-29 | Process for the manufacture of active absorbing carbon and phosphoric acid and its compounds |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB233840A true GB233840A (en) | 1925-05-21 |
Family
ID=9844773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8048/24A Expired GB233840A (en) | 1924-03-29 | 1924-03-29 | Process for the manufacture of active absorbing carbon and phosphoric acid and its compounds |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB233840A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2712494A (en) * | 1951-01-16 | 1955-07-05 | Saint Gobain | Preparation of phosphorus oxychloride |
| GB2399343A (en) * | 2003-01-16 | 2004-09-15 | Rodney Bruce Gilmour | Disposal of animal waste |
-
1924
- 1924-03-29 GB GB8048/24A patent/GB233840A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2712494A (en) * | 1951-01-16 | 1955-07-05 | Saint Gobain | Preparation of phosphorus oxychloride |
| GB2399343A (en) * | 2003-01-16 | 2004-09-15 | Rodney Bruce Gilmour | Disposal of animal waste |
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