What causes bubbling in ion exchange membranes?
Thread Content
This post was last edited by sunjl1981 on 2013-1-6 20:04. What could be the reason why the ion membrane develops bubbles after just a few months of use? This post was last edited by haining on 2009-3-18 08:44. ] # ， ， &
What causes bubbling in ion exchange membranes? http://bbs.hcbbs.com/viewthread.php?tid=173565 Reasons for bubbles appearing on ion exchange membranes http://bbs.hcbbs.com/viewthread.php?tid=238153
There are various reasons for bubble formation in ion exchange membranes: 1. Defects in the membrane itself; some batches produced by membrane manufacturers have quality issues. 2. There are defects in the design of the electrolyzers; in some manufacturers’ units, the positions of the anode and cathode facilitate salt crystallization, which in turn causes bubbling in the ion exchange membrane. 3. It is caused by improper operation: the concentration of the saline solution is too high and the circulation volume is insufficient, leading to salt crystallization on the ion exchange membrane, which in turn causes bubbling on the membrane.
Could you please explain in detail which manufacturer’s ion membrane is being used, as well as which company’s electrolyzer is being employed?
There are many reasons: improper operation, frequent stopping, lax control standards, problems with the electrolyzer itself, quality issues with the ion exchange membrane, and so on. This post was last edited by yzhms on 2009-3-20 at 15:08.]
Also, after each stop to clean the electrolyzer, the pure water inside it is not completely drained, which causes the bottom of the membrane to remain submerged in water for extended periods of time, leading to the formation of bubbles at that bottom area.
Judging from the fact that bubbles appear after just a few months of operation as observed from upstairs, it is possible that 1. some or individual cell channels do not receive enough liquid supply, which causes the membranes to form bubbles； 2. There is a problem with the adhesive used for the gasket in the new membrane unit slot, which causes the electrode mesh to be obscured ； Pay close attention to the location where bubbling occurs; the cause can be determined from that location, so prevention should be based on the location and pattern of the bubbling.
Bubbling may be caused by organic substances in the brine; these organic substances produce bubbles, leading to the expansion and bubbling of the ion membrane. The testing method involves checking for organic impurities in the saline solution, particularly organic carbon. A simpler method is to stir and check whether bubbles form in the saltwater.
Reasons for ion membrane bubbling: 1. Insufficient saltwater circulation volume. 2. Saltwater concentration not meeting standards. 3. Circulating alkali solution concentration too high. 4. Insufficient amount of circulating alkali solution. 5. Low pH of circulating saltwater. 6. Disruption in the supply of saltwater to the tank. 7. Disruption in the supply of alkali solution to the tank. 8. Excessive organic matter in the saltwater. 9. Membrane installed in the wrong direction. 10. Delayed application of polarization current. 11. Delayed cleaning of the tank. 12. Quality issues with the membrane
It mainly checks the quality of saltwater. Are there many or just a few? Individual inspection of cell installation.
Floor 9 provides a fairly comprehensive summary. :lol :lol :lol :handshake
Are there individual bubbles on the membrane or many bubbles?