DE612491C - Process for removing the protein-containing intermediate layer from film waste of all kinds - Google Patents

Process for removing the protein-containing intermediate layer from film waste of all kinds

Info

Publication number
DE612491C
DE612491C DER80364D DER0080364D DE612491C DE 612491 C DE612491 C DE 612491C DE R80364 D DER80364 D DE R80364D DE R0080364 D DER0080364 D DE R0080364D DE 612491 C DE612491 C DE 612491C
Authority
DE
Germany
Prior art keywords
protein
kinds
intermediate layer
film waste
containing intermediate
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
DER80364D
Other languages
German (de)
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
Priority to DER80364D priority Critical patent/DE612491C/en
Application granted granted Critical
Publication of DE612491C publication Critical patent/DE612491C/en
Expired legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J11/00—Recovery or working-up of waste materials
    • C08J11/04—Recovery or working-up of waste materials of polymers
    • C08J11/06—Recovery or working-up of waste materials of polymers without chemical reactions
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2301/00—Characterised by the use of cellulose, modified cellulose or cellulose derivatives
    • C08J2301/08—Cellulose derivatives
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/62—Plastics recycling; Rubber recycling

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Detergent Compositions (AREA)

Description

Verfahren zur Entfernung der eiweißhaltigen Zwischenschicht von Filmabfällen aller Art Es ist bekannt, die aus Eiweiß bestehende Zwischenschicht der Filme durch Behandlung mit Hypochloriten, wie Eau de Javelle, zu zerstören. Und zwar ist es vorteilhaft, solche Filmabfälle, weiche die Emulsionsschicht tragen, vorher von derselben zu befreien, womit gleichzeitig die Rückgewinnung des Silbers verbunden wird. Man hat ferner Laugen zur Entfernung in Vorschlag gebracht.Process for removing the protein-containing intermediate layer from film waste of all kinds It is known that the interlayer of the films, which consists of protein, passes through Treatment with hypochlorites, such as Eau de Javelle, to destroy it. And indeed it is It is advantageous to remove such film scraps which carry the emulsion layer beforehand to free the same, with which at the same time the recovery of the silver is connected will. Lye has also been suggested for removal.

Diese Verfahren haben den Nachteil, daß man keinerlei Kontrolle besitzt, dä.ß die Filme gleichmäßig mit den Lösungen- benetzt worden sind, also das. Eiweiß auch an allen Stellen wirklich zerstört ist. Man ist also Zufälligkeiten ausgesetzt, namentlich, wenn. man in einem bestimmten Rauminhalt die höchstmögliche Menge an Abfällen verarbeiten will was ja wirtschaftlich geboten ist.These methods have the disadvantage that you have no control whatsoever, that the films were evenly wetted with the solutions, that is, the protein is really destroyed in all places. So you are exposed to coincidences by name if. the highest possible amount of space in a given volume Wants to process waste, which is economically necessary.

Es wurde nun gefunden, daß man bereits finit Lösungen von, z. B. o,05 % Kaliumpermanganat, denen eine bestimmte Schwefelsäuremenge zugesetzt ist, und niedrigeren Konzentrationen das Eiweiß zerstören kann, wobei durch Ziehen von Proben die Einwirkung jederzeit kontrolliert werden kann, da die Filme braungefärbt erscheinen.It has now been found that finite solutions of, for. B. o, 05 % Potassium permanganate, to which a certain amount of sulfuric acid is added, and Lower concentrations can destroy the protein, whereby by drawing samples the effect can be checked at any time, as the films appear brown.

Man kann dann nach genügend langer Einwirkung durch Zusatz von schwefliger Säure, deren Salzen oder mittels anderer geeigneter Stoffe die notwendige EntfäAung und vollständige Entfernung des Eiweißes herbeiführen, wobei die bleichende Wirkung der schwefligen Säure besonders vorteilhaft ist. H Die schweflige Säure kann auch gasförmig zur Anwendung kommen. Ferner kann man mit Wassexstoflsuperoxyd arbeiten, wobei dieses hauptsächlich zur Auflösung des färbenden Braunsteins dient.You can then, after a sufficiently long exposure, by adding sulphurous Acid, their salts or by means of other suitable substances the necessary defoliation and bring about complete removal of the egg white, with the whitening effect the sulphurous acid is particularly advantageous. H The sulphurous acid can also be used in gaseous form. Furthermore, one can work with Wassexstoflsuperoxid, this mainly serves to dissolve the coloring brownstone.

Die Entfärbung kann in getrenntem oder in demselben Bade vorgenommen werden, auch ist eine Auffrischtuig der Lösungen bei getrenntem Arbeiten vorteilhaft. Man kamt also je nach der Eigenart der Abfälle die Arbeitsbedingungen: anpassen. Die Temperatur wird zweckmäßig zwischen etwa 35 bis 5o° G genommen. Höheine Temperaturen können Undurchsichtigwerden der Filmabfälle hervorrufen (Weißtrübung).The decolorization can be carried out in a separate bath or in the same bath It is also advantageous to refresh the solutions when working separately. So depending on the nature of the waste, the working conditions were: adapt. The temperature is expediently taken between about 35 to 50 ° G. High temperatures can cause the film waste to become opaque (white clouding).

Beispiel In i Kubikmeter auf etwa 5o-- C angeheiztem enthärtetem Wasser werden 0,5 kg Kaliumpermanganat gelöst und 3kg 16%ige Schwefelsäure zugegeben. Dann werden 75 kg Filmabfälle, welche vorh ex von der Emulsiönss'chicht befreit worden sind, zugegeben. Die Filmstücke bleiben 3o Minuten: in der Lösung unter öfterem Bewegen und werden nach dieser Zeit mittels Gabeln, so daß die Hauptmenge der Flüssigkeit abtropfen kann, in ein Gefäß mit i Kubikmeter angeheizter o,o5%iger schwefliger Säure eingetragen und. bis zur gewünschten Entfärbung darin ge-.lassen, was etwa i/2 Stunde Zeit beanspiucht. EXAMPLE 0.5 kg of potassium permanganate are dissolved in 1 cubic meter of softened water heated to around 50 ° C and 3 kg of 16% sulfuric acid are added. Then 75 kg of film waste, which has previously been freed from the emulsion layer, are added. The pieces of film remain in the solution for 30 minutes with frequent agitation and after this time they are introduced into a vessel with one cubic meter of heated o, o5% sulfurous acid using forks so that the bulk of the liquid can drip off. left in it until the desired discoloration, which takes about half an hour.

An Stelle von Kaliumpermanganat kann auch ein anderes Permanganat öder deren Mischungen Verwendung finden.Instead of potassium permanganate, another permanganate can also be used or their mixtures are used.

Claims (2)

PÄTIN@"rn@isz ItücRE: r. Verfahren zur . Entfernung der ei
weißhaltigen Zwischenschicht vors .. ihn abfällen aller Art, darin be'stehen#d; .;däß.. dieselben einer Vorbehandlung mit @awe- felsauren Permanganatlösungen un
einer Naehbehandlung mit schwefliger Säure, deren: Salzen oder .anderen geeigneten Mitteln,, wie Wasserstoffsuperoxyd, unterworfen weiden. DADIN @ "rn @ isz ItücRE: r. Procedure for. Removal of the egg
white intermediate layer in front of him waste of all kinds, in it consist # d; .; that .. the same as a pretreatment with @ awe- rock acid permanganate solutions un
a subsequent treatment with sulphurous acid, which is subjected to salts or other suitable agents, such as hydrogen peroxide. 2. Verfahren nasch Anspruch i, darin bestehend, daß die schweflige Säure gasförmig zur Anwendung kommt.2. Procedure nasch claim i, consisting in the fact that the sulphurous acid is used in gaseous form.
DER80364D 1931-01-09 1931-01-09 Process for removing the protein-containing intermediate layer from film waste of all kinds Expired DE612491C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DER80364D DE612491C (en) 1931-01-09 1931-01-09 Process for removing the protein-containing intermediate layer from film waste of all kinds

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DER80364D DE612491C (en) 1931-01-09 1931-01-09 Process for removing the protein-containing intermediate layer from film waste of all kinds

Publications (1)

Publication Number Publication Date
DE612491C true DE612491C (en) 1935-04-25

Family

ID=7416271

Family Applications (1)

Application Number Title Priority Date Filing Date
DER80364D Expired DE612491C (en) 1931-01-09 1931-01-09 Process for removing the protein-containing intermediate layer from film waste of all kinds

Country Status (1)

Country Link
DE (1) DE612491C (en)

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