BG50877A1 - Method for purification of waste solutions containing benzyl alcohol and benzaldehyde - Google Patents
Method for purification of waste solutions containing benzyl alcohol and benzaldehydeInfo
- Publication number
- BG50877A1 BG50877A1 BG9279390A BG9279390A BG50877A1 BG 50877 A1 BG50877 A1 BG 50877A1 BG 9279390 A BG9279390 A BG 9279390A BG 9279390 A BG9279390 A BG 9279390A BG 50877 A1 BG50877 A1 BG 50877A1
- Authority
- BG
- Bulgaria
- Prior art keywords
- benzaldehyde
- benzyl alcohol
- purification
- solutions containing
- containing benzyl
- Prior art date
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
By this method, the effluent waters are de-coloured, and a road conversion of the toxic substances - benzyl alcohol and benzaldehyde - is conducted in non-toxic benzoic acid, which is extracted from the liquid phase and may be used as a commercial product. The effluent solutions are alkalised in advance to pH 9-12 at continuous mixing in the presence of a solid nickel oxide, derived from nickel chloride and sodium hypo chlorate in a weight proportion of 1:2 to 1:4. After that, they are acidified to pH 3 and the purified solutions are neutralized with a sodium base.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BG9279390A BG50877A1 (en) | 1990-09-05 | 1990-09-05 | Method for purification of waste solutions containing benzyl alcohol and benzaldehyde |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BG9279390A BG50877A1 (en) | 1990-09-05 | 1990-09-05 | Method for purification of waste solutions containing benzyl alcohol and benzaldehyde |
Publications (1)
Publication Number | Publication Date |
---|---|
BG50877A1 true BG50877A1 (en) | 1992-12-15 |
Family
ID=3923237
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BG9279390A BG50877A1 (en) | 1990-09-05 | 1990-09-05 | Method for purification of waste solutions containing benzyl alcohol and benzaldehyde |
Country Status (1)
Country | Link |
---|---|
BG (1) | BG50877A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107010761A (en) * | 2017-05-27 | 2017-08-04 | 南京工业大学 | Combined purification method for o/p-chlorobenzaldehyde rectification residual liquid and process wastewater |
CN107055743A (en) * | 2017-05-27 | 2017-08-18 | 南京工业大学 | Catalytic purification method for rectification residual liquid in benzaldehyde preparation by toluene chlorination hydrolysis method |
-
1990
- 1990-09-05 BG BG9279390A patent/BG50877A1/en unknown
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107010761A (en) * | 2017-05-27 | 2017-08-04 | 南京工业大学 | Combined purification method for o/p-chlorobenzaldehyde rectification residual liquid and process wastewater |
CN107055743A (en) * | 2017-05-27 | 2017-08-18 | 南京工业大学 | Catalytic purification method for rectification residual liquid in benzaldehyde preparation by toluene chlorination hydrolysis method |
CN107010761B (en) * | 2017-05-27 | 2020-03-10 | 南京工业大学 | Combined purification method for o/p-chlorobenzaldehyde rectification residual liquid and process wastewater |
CN107055743B (en) * | 2017-05-27 | 2020-04-21 | 南京工业大学 | Catalytic purification method for rectification residual liquid in benzaldehyde preparation by toluene chlorination hydrolysis method |
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