GB776356A - Improvements in or relating to the electrolytic preparation of alginic acid - Google Patents

Improvements in or relating to the electrolytic preparation of alginic acid

Info

Publication number
GB776356A
GB776356A GB13785/54A GB1378554A GB776356A GB 776356 A GB776356 A GB 776356A GB 13785/54 A GB13785/54 A GB 13785/54A GB 1378554 A GB1378554 A GB 1378554A GB 776356 A GB776356 A GB 776356A
Authority
GB
United Kingdom
Prior art keywords
alginic acid
anode
cell
cathode
solution
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
Application number
GB13785/54A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of GB776356A publication Critical patent/GB776356A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
    • C08B37/00—Preparation of polysaccharides not provided for in groups C08B1/00 - C08B35/00; Derivatives thereof
    • C08B37/006—Heteroglycans, i.e. polysaccharides having more than one sugar residue in the main chain in either alternating or less regular sequence; Gellans; Succinoglycans; Arabinogalactans; Tragacanth or gum tragacanth or traganth from Astragalus; Gum Karaya from Sterculia urens; Gum Ghatti from Anogeissus latifolia; Derivatives thereof
    • C08B37/0084—Guluromannuronans, e.g. alginic acid, i.e. D-mannuronic acid and D-guluronic acid units linked with alternating alpha- and beta-1,4-glycosidic bonds; Derivatives thereof, e.g. alginates

Abstract

776,356. Electrolytic production of alginic acid; electro-osmosis. TORGERSEN, H. May 11, 1954 [May 16, 1953], No. 13785/54. Class 41. Alginic acid is electrodeposited on the anode of a cell containing an alkaline solution of salts of alginic acid and having a diaphragm of non- conducting material between the anode and cathode, the diaphragm assuming a negative potential relatively to the electrolyte and water being preferentially passed through the diphragm towards the cathode to partially dehydrate the alginic acid simultaneously with its deposition. As shown, the cell 1 has a rotating anode 3 of graphite or magnetite and a concentric perforated, sheet steel cathode 2 against which rests a textile diaphragm 4 of cotton canvas, sail canvas, cellulose, or asbestos. Alkaline alginate solution, prepared by extracting crude alga solution with alkali containing some carbonate provided by the addition either of carbon dioxide or sodium carbonate, is fed after filtering to the cell at 7, the liquid level being maintained at 8 by the overflow 11. The alginic acid deposited on the anode is freed from adhering alginate solution by a roller 10 pressing on the coating which is stripped off by the scraper 9. Alkali hydroxide formed in the cathode space together with water-soluble impurities in the alginate solution are withdrawn through the outlet 12 and used for the preparation of more alginate solution which, together with the overflow at 11 and alginate removed from the roller 10 by the scraper 13, is recycled to the cell at 7. Several such cells may be arranged in cascade.
GB13785/54A 1953-05-16 1954-05-11 Improvements in or relating to the electrolytic preparation of alginic acid Expired GB776356A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NO776356X 1953-05-16

Publications (1)

Publication Number Publication Date
GB776356A true GB776356A (en) 1957-06-05

Family

ID=19907008

Family Applications (1)

Application Number Title Priority Date Filing Date
GB13785/54A Expired GB776356A (en) 1953-05-16 1954-05-11 Improvements in or relating to the electrolytic preparation of alginic acid

Country Status (1)

Country Link
GB (1) GB776356A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20131472A1 (en) * 2013-09-06 2015-03-07 Next Materials S R L PROCESS FOR THE FUNCTIONALIZATION OF NON-CONDUCTIVE FABRICS WITH NATURAL OR SYNTHETIC MACROMOLECULES

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20131472A1 (en) * 2013-09-06 2015-03-07 Next Materials S R L PROCESS FOR THE FUNCTIONALIZATION OF NON-CONDUCTIVE FABRICS WITH NATURAL OR SYNTHETIC MACROMOLECULES

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