DE3818985A1 - Arrangement for cross-flow electrodialysis - Google Patents
Arrangement for cross-flow electrodialysisInfo
- Publication number
- DE3818985A1 DE3818985A1 DE3818985A DE3818985A DE3818985A1 DE 3818985 A1 DE3818985 A1 DE 3818985A1 DE 3818985 A DE3818985 A DE 3818985A DE 3818985 A DE3818985 A DE 3818985A DE 3818985 A1 DE3818985 A1 DE 3818985A1
- Authority
- DE
- Germany
- Prior art keywords
- membranes
- arrangement
- cross
- modules
- module
- 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.)
- Ceased
Links
- 238000000909 electrodialysis Methods 0.000 title claims abstract description 5
- 239000012528 membrane Substances 0.000 claims abstract description 14
- 150000001450 anions Chemical class 0.000 claims abstract description 3
- 238000010276 construction Methods 0.000 claims abstract 3
- 239000003011 anion exchange membrane Substances 0.000 claims description 3
- 238000005341 cation exchange Methods 0.000 claims description 3
- 239000012466 permeate Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 5
- 238000000926 separation method Methods 0.000 abstract description 4
- 150000001768 cations Chemical class 0.000 abstract description 3
- 230000010287 polarization Effects 0.000 description 2
- 239000003010 cation ion exchange membrane Substances 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000502 dialysis Methods 0.000 description 1
- 238000010828 elution Methods 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000001471 micro-filtration Methods 0.000 description 1
- 238000000108 ultra-filtration Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/42—Electrodialysis; Electro-osmosis ; Electro-ultrafiltration; Membrane capacitive deionization
- B01D61/44—Ion-selective electrodialysis
- B01D61/46—Apparatus therefor
Landscapes
- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Health & Medical Sciences (AREA)
- Urology & Nephrology (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
Description
Die bislang verwendeten Verfahren zur Elektrodialyse verwenden Kammern, die an 2 gegenüberliegenden Wänden mit der Kathode bzw. Anode eine Gleichstromspannungsquelle verbunden sind. Zwischen diesen Kammerwänden wird das zu behandelnde Filtrationsgut innerhalb jeweils 2er Flachmembranen (davon eine Kationen und eine Anionenaustauschermembran) durchgeleitet (s. dazu Schema 1).The previously used methods for electrodialysis use chambers that one on 2 opposite walls with the cathode or anode DC voltage source are connected. Between these chamber walls the filter material to be treated is within 2 units Flat membranes (thereof a cation and an anion exchange membrane) passed through (see Scheme 1).
Der Nachteil dieses Aufbaus besteht darin, daß sich während des Dialyseprozesses an der Membranoberfläche eine Konzentrationspolarisation aufbaut, wodurch die Geschwindigkeit der gewünschten Abtrennung stark verzögert wird.The disadvantage of this structure is that during the Dialysis process on the membrane surface a concentration polarization builds up, making the speed of the desired separation strong is delayed.
Ziel der Erfindung war es, die Elektrodialyse in Rohrmembranen durchzuführen, da die bei Membrantrennverfahren auftretende Konzentrationspolarisation mit Rohrmembranen ideal verhindert werden kann.The aim of the invention was to electrodialysis in tubular membranes to be carried out because the membrane separation process Concentration polarization with tubular membranes can be prevented ideally.
Der Aufbau der Erfindung bedient sich vom Prinzip her der Anordnung wie sie für Querstromultrafiltrations- oder Mikrofiltrationsanlagen üblich ist (Abb. 1). Durch hohe Umwälzleistung wird Ladungstrennung ermöglicht, obwohl sie nicht im gleichen Modul abläuft.In principle, the structure of the invention uses the arrangement as is customary for cross-flow ultrafiltration or microfiltration systems ( Fig. 1). The high circulation capacity enables charge separation, although it does not take place in the same module.
Es werden Module verwendet (wie in der Gebrauchsmusteranmeldung G 88 06 084.5 beschrieben), die mit Rohrmembranen ausgerüstet werden, die ihrerseits jeweils entweder als Kationen - oder als Anionenaustauschermembranen gefertigt werden. Das Anionenaustauscher membranmodul A (Abb. 1) wird an den Pluspol einer Gleichstromspannungs quelle, das Modul B mit der Kationenaustauschermembran an den Minuspol angeschlossen (siehe Schema 2). Die Verrohrung der Module miteinander ist elektrisch isoliert, z. B. entweder durch Kunststoffverrohrung oder eine nicht leitende Dichtung.Modules are used (as described in utility model application G 88 06 084.5), which are equipped with tubular membranes, which in turn are either manufactured as cation or anion exchange membranes. The anion exchanger membrane module A ( Fig. 1) is connected to the positive pole of a DC voltage source, module B with the cation exchange membrane to the negative pole (see diagram 2). The piping of the modules together is electrically isolated, e.g. B. either through plastic tubing or a non-conductive seal.
Die beiden Permeatabgänge (P) jedes Moduls werden als Ein- bzw. Ausgang für die durchzuleitende Roh- oder Elutionslösung benutzt.The two permeate outlets (P) of each module are used as inputs and outputs for the raw or elution solution to be passed through.
Diese Kreisläufe müssen für Kathoden- und Anodenmodule separat, d. h. elektrisch isoliert, gefahren werden.These circuits must be separate for cathode and anode modules, i. H. electrically insulated.
Für die Herstellung der Ionenaustauscherrohrmembran werden unter anderem die in Angewandte Chemie 94 (1982), sowie in Ullmann 16, 515 beschriebenen Methoden verwendet.For the manufacture of the ion exchange tube membrane, among other things that described in Angewandte Chemie 94 (1982) and in Ullmann 16, 515 Methods used.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3818985A DE3818985A1 (en) | 1988-06-03 | 1988-06-03 | Arrangement for cross-flow electrodialysis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3818985A DE3818985A1 (en) | 1988-06-03 | 1988-06-03 | Arrangement for cross-flow electrodialysis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE3818985A1 true DE3818985A1 (en) | 1989-12-14 |
Family
ID=6355817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE3818985A Ceased DE3818985A1 (en) | 1988-06-03 | 1988-06-03 | Arrangement for cross-flow electrodialysis |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE3818985A1 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2629506A1 (en) * | 1975-07-02 | 1977-01-20 | Diamond Shamrock Corp | ELECTROLYSIS CELL FOR THE PRODUCTION OF ALKALIMETAL HYDROXIDES AND HALOGENES |
-
1988
- 1988-06-03 DE DE3818985A patent/DE3818985A1/en not_active Ceased
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2629506A1 (en) * | 1975-07-02 | 1977-01-20 | Diamond Shamrock Corp | ELECTROLYSIS CELL FOR THE PRODUCTION OF ALKALIMETAL HYDROXIDES AND HALOGENES |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8127 | New person/name/address of the applicant |
Owner name: MBT MEMBRANTECHNIK GMBH, 6603 SULZBACH, DE |
|
| 8181 | Inventor (new situation) |
Free format text: PENTH, BERND, DIPL.-CHEM. DR., 6688 ILLINGEN, DE |
|
| 8110 | Request for examination paragraph 44 | ||
| 8131 | Rejection |