GB865309A - A method for the production of citrates - Google Patents
A method for the production of citratesInfo
- Publication number
- GB865309A GB865309A GB2728959A GB2728959A GB865309A GB 865309 A GB865309 A GB 865309A GB 2728959 A GB2728959 A GB 2728959A GB 2728959 A GB2728959 A GB 2728959A GB 865309 A GB865309 A GB 865309A
- Authority
- GB
- United Kingdom
- Prior art keywords
- citric acid
- citrate
- solution
- alkali metal
- calcium
- 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
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
- C12P7/00—Preparation of oxygen-containing organic compounds
- C12P7/40—Preparation of oxygen-containing organic compounds containing a carboxyl group including Peroxycarboxylic acids
- C12P7/44—Polycarboxylic acids
- C12P7/48—Tricarboxylic acids, e.g. citric acid
Landscapes
- Organic Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Zoology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Microbiology (AREA)
- General Chemical & Material Sciences (AREA)
- Biotechnology (AREA)
- Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- Bioinformatics & Cheminformatics (AREA)
- General Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Genetics & Genomics (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
Abstract
Citrates are obtained from very impure citric acid solutions obtained during the fermentation of sugar-containing solutions with Aspergillus niger by concentrating the fermentation citric acid solution in vacuo to concentrations of 40-85% by weight of citric acid, the solution being neutralised with basic inorganic alkali metal compounds to the mono-, di- or tri-stage either before or after the concentration, crystallising the alkali metal citrate by stirring, standing or seeding, treating the mother liquor separated from the crystallised alkali metal citrate with 1 mol of calcium per mol of citric acid in the mother liquor, either in the form of calcium carbonate and/or hydroxide when the mother liquor has not been completely neutralised, or in the form of calcium chloride when it has been completely neutralised, until precipitation of a monoalkali metal calcium citrate, the precipitated salt being filtered off and converted to a solution of monoalkali metal citrate with the stoichiometric quantity of sulphuric acid. Citric acid may be produced from the monoalkali metal citrate solution and/or from the crystallised alkali metal citrate, by percolation over ion-exchange resins, or in an electrodialytic cell. Thus, in Example 1, crystalline monopotassium citrate is dissolved in monopotassium citrate solution and the resulting liquor passed over five cation exchange columns in series, the first two containing a sulphonated coal product and the rest a sulphonated polystyrol in the hydrogen form to give an aqueous citric acid solution. In Example 3, crystalline disodium citrate is dissolved in water and the solution fed to the second chamber of a four-compartment electro-dialytic cell of which chambers are formed by successive arrangement of a stainless steel cathode, a permselective cation exchange membrane, an anion exchange membrane, a cation exchange membrane and a graphite anode; the first chamber contains about 2N NaOH, the second the above-mentioned citrate solution, through the third flows pure citric acid solution, while the fourth contains about 1N H2SO4; citric acid is recovered from the third compartment.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEB49917A DE1055483B (en) | 1958-08-09 | 1958-08-09 | Process for the production of citric acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB865309A true GB865309A (en) | 1961-04-12 |
Family
ID=6969018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2728959A Expired GB865309A (en) | 1958-08-09 | 1959-08-10 | A method for the production of citrates |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE581497A (en) |
| DE (1) | DE1055483B (en) |
| GB (1) | GB865309A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103739480A (en) * | 2014-01-26 | 2014-04-23 | 扬州日兴生物科技股份有限公司 | Method for recovering and preparing calcium citrate from calcium-containing process water for producing chitin |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3926642C2 (en) * | 1988-08-11 | 1998-02-26 | Fraunhofer Ges Forschung | Process for obtaining an acid from its salt |
| CN110272883B (en) * | 2019-07-03 | 2020-07-21 | 中溶科技股份有限公司 | Method for co-producing cellobiase and chitin |
-
1958
- 1958-08-09 DE DEB49917A patent/DE1055483B/en active Pending
-
1959
- 1959-08-08 BE BE581497A patent/BE581497A/en unknown
- 1959-08-10 GB GB2728959A patent/GB865309A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103739480A (en) * | 2014-01-26 | 2014-04-23 | 扬州日兴生物科技股份有限公司 | Method for recovering and preparing calcium citrate from calcium-containing process water for producing chitin |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1055483B (en) | 1959-04-23 |
| BE581497A (en) | 1959-12-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4592817A (en) | Electrodialytic water splitting process for gaseous products | |
| SE9101977D0 (en) | A PROCESS FOR THE PRODUCTION OF CHLORINE DIOXIDE | |
| US4828993A (en) | Process for the preparation of organic acids | |
| GB1474446A (en) | Process for the manufacture of chlorine and sodium carbonate | |
| CN106083674B (en) | A kind of production method reducing carbonate in methionine saponification liquor | |
| US4260594A (en) | Method for the manufacture of crystals of sodium carbonate monohydrate | |
| CA2229229A1 (en) | Process for the combined electrochemical production of sodium peroxodisulphate and sodium hydroxide solution | |
| US4874700A (en) | Process for the production of L-malic acid | |
| GB895690A (en) | Improvements in or relating to the preparation of sodium carbonate | |
| GB865309A (en) | A method for the production of citrates | |
| US2842489A (en) | Production of soda ash | |
| US3883406A (en) | Process for recovering electrolytically produced alkali metal chlorates | |
| GB1263818A (en) | Improvements in or relating to electrolytic diaphragm cells | |
| ES446383A1 (en) | Method of obtaining caustic soda from a sodium chloride liquor containing sulphate ions recovered from an electrolytic cell | |
| US2277778A (en) | Process for producing salts | |
| US3103413A (en) | Sodium cakbonate manufacture | |
| US4888099A (en) | Process for the production of alkali metal chlorate | |
| GB1286142A (en) | Manfacture of sodium carbonate | |
| ES399593A1 (en) | Process for the preparation of sodium carbonate monohydrate from a sodium hydroxide solution produced according to the diaphragm process | |
| USRE28192E (en) | Process for producing crystalline alkah metal citrates by precipita- tion | |
| GB799752A (en) | Citric acid production | |
| US3681214A (en) | Process for producing high-purity alkali hydroxides | |
| GB1045675A (en) | Process for the electrolytic production of dithionites | |
| US3621053A (en) | Process for recovering itaconic acid and salts thereof from fermented broth | |
| GB882263A (en) | A method for the production of citric acid |