GB569306A - Improvements in or relating to processes of treating an impure solution or liquid containing organic material, particularly processes of purifying sugar solutions and the like - Google Patents
Improvements in or relating to processes of treating an impure solution or liquid containing organic material, particularly processes of purifying sugar solutions and the likeInfo
- Publication number
- GB569306A GB569306A GB1189342A GB1189342A GB569306A GB 569306 A GB569306 A GB 569306A GB 1189342 A GB1189342 A GB 1189342A GB 1189342 A GB1189342 A GB 1189342A GB 569306 A GB569306 A GB 569306A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acid
- carbon
- liquid
- treating
- treatment
- 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
-
- C—CHEMISTRY; METALLURGY
- C13—SUGAR INDUSTRY
- C13K—SACCHARIDES OBTAINED FROM NATURAL SOURCES OR BY HYDROLYSIS OF NATURALLY OCCURRING DISACCHARIDES, OLIGOSACCHARIDES OR POLYSACCHARIDES
- C13K1/00—Glucose; Glucose-containing syrups
- C13K1/06—Glucose; Glucose-containing syrups obtained by saccharification of starch or raw materials containing starch
- C13K1/08—Purifying
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biochemistry (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Emergency Medicine (AREA)
- General Health & Medical Sciences (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Water Treatment By Sorption (AREA)
Abstract
A process for treating an impure acidic liquid containing organic materials, particularly an acidic sugar or dextrose solution obtained in the acid conversion of starch products in the production of sugar, or in the treatment of aqueous wood extracts, comprises treating the liquid first with an active carbonaceous material, particularly a decolourizing carbon, and then with an acid-adsorbing or acid-removal body. After treating the liquid, if necessary, with a hydrogen-exchange body, e.g. a zeolite prepared by the treatment of wood, lignite, coal, or other carbonaceous material with strong sulphuric acid, or a cation-exchange body such as a condensation product of a polyhydric phenol and formaldehyde, whereby the inorganic salts are converted into the corresponding acids, it is passed through a bed of granular activated carbon where colouring-matter and other organic colloids and dissolved organic impurities are removed. The liquid is subsequently passed through the acid-adsorption body, which may consist of a m-phenylene-diamine-formaldehyde, aniline-aldehyde, guanidine-formaldehyde, or dicyandiamide resin or an oxide of iron or aluminium. The liquid when passed through the carbon bed should have a pH value less than 7 and preferably less than 4.3, and the carbon can then be reactivated when exhausted by treatment with a dilute alkali solution, e.g. a 0.5-5 per cent solution of sodium hydroxide. The solution used may be that which has already been used in regenerating the acid-absorbing material. Prior to reactivation, the carbon is preferably washed with water, and after treatment with hot or cold alkali, it can be treated with acid, e.g. sulphuric or hydrochloric acid or, preferably, carbon dioxide, to facilitate removal of the alkali by further washing. The alkali solution can be treated for recovery of the contained substances. In order to prevent inversion of the sugar, a small amount of alkaline substance may be added to restore the pH value to at least 7, any carbon dioxide dissolved in the liquor being preferably first removed by aeration. Specification 554,826 and U.S.A. Specification 2,151,883 are referred to.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1189342A GB569306A (en) | 1942-08-24 | 1942-08-24 | Improvements in or relating to processes of treating an impure solution or liquid containing organic material, particularly processes of purifying sugar solutions and the like |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1189342A GB569306A (en) | 1942-08-24 | 1942-08-24 | Improvements in or relating to processes of treating an impure solution or liquid containing organic material, particularly processes of purifying sugar solutions and the like |
Publications (1)
Publication Number | Publication Date |
---|---|
GB569306A true GB569306A (en) | 1945-05-17 |
Family
ID=9994586
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1189342A Expired GB569306A (en) | 1942-08-24 | 1942-08-24 | Improvements in or relating to processes of treating an impure solution or liquid containing organic material, particularly processes of purifying sugar solutions and the like |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB569306A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114405062A (en) * | 2022-01-18 | 2022-04-29 | 武汉有机实业有限公司 | Method for reducing acid value in benzaldehyde by using composite filler column |
-
1942
- 1942-08-24 GB GB1189342A patent/GB569306A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114405062A (en) * | 2022-01-18 | 2022-04-29 | 武汉有机实业有限公司 | Method for reducing acid value in benzaldehyde by using composite filler column |
CN114405062B (en) * | 2022-01-18 | 2023-08-25 | 武汉有机实业有限公司 | Method for reducing acid value in benzaldehyde by using composite filler column |
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