What is Dowex ion exchange resin?
DOW Ion exchange (IX) resins are polymers that are capable of exchanging ions with ions in a solution that is passed through them. DOW’s world-class IX resins serve applications as diverse as industrial water softening, pharmaceutical formulations, sweetener purification, mining and more.
What is dowex used for?
DOWEX cation and anion exchange resins, used separately or in combination, with or without other water-treating materials, do an amazing variety of water-conditioning jobs; from simple softening of hard water supplies to removal of dissolved solids down to a part per billion!
Which type of resin is Dowex 3?
Description DOWEX™ MAC-3 Weak Acid Cation Resin has high exchange capacity, excellent regeneration efficiency, very good resistance to osmotic shock, plus good chemical and physical stability. DOWEX MAC-3 Resin is effective in removal of temporary hardness (hardness associated with alkalinity) and dealkalization.
How do you clean dowex resin?
Hydrogen peroxide can be applied as a solution of 0.2% with a contact time of 15 minutes; 0.05% for 2 hours or 0.05% for 24 hours (0.5 BV minimum). This should be followed by a rinse to eliminate peroxide (detectable by paper re-agents) and then by a double regeneration.
Who makes dowex?
DOWEX® MARATHON™ is a trademark of The Dow Chemical Company used under license by DuPont. AmberLite™ HPR1200 H Ion Exchange Resin has previously been sold as DOWEX® MARATHON™ 1200 H. It is a Uniform Particle Size, Gel, Strong Acid Cation Exchange Resin for Industrial Demineralization Applications.
How long does ion exchange resin last?
about 10 to 15 years
As a general rule, you can expect an ion exchange resin to last about 10 to 15 years in water treatment (as opposed to four to eight years for anion exchange resins).
What type of resin is Dowex 50?
strong acid cation resin
Therefore… DOWEX 50WX8 is a strong acid cation resin containing 8% DVB. DOWEX 1X4 is a Type I strong base anion resin containing 4% DVB.
How does ion exchange resin work?
Put simply, ion exchange is a reversible interchange of charged particles—or ions—with those of like charge. This occurs when ions present on an insoluble IX resin matrix effectively swap places with ions of a similar charge that are present in a surrounding solution.
Can dowex be reused?
Yes, you can certainly re-use Dowex 50, as well as other ion exchange resins.
Does vinegar clean water softener resin?
Can I put vinegar in my water softener? Yes; follow the same instructions for cleaning the tank with bleach. You can also mix the vinegar with water if you’d rather just scrub the brine tank instead of running a full cycle.
What is ion exchange filtration?
The ion exchange filtration is one of the most common water filtration methods. Ion exchange process percolates water through bead-like spherical resin materials (ion-exchange resins). Ions in the water are exchanged for other ions fixed to the beads.
Who makes ion exchange resin?
For more than 80 years, DuPont Water Solutions has developed one of the deepest ion exchange resin portfolios in the industry, working closely with customers like you to meet evolving separation and purification needs. Learn about our extensive family of IX resins.
Can you clean ion exchange resin?
The ion exchange column should be vented, as gases may escape. Clean the resin by backwashing and air scour to loosen accumulation of biofilm and remove contaminants (silt and debris). If the resin has iron or other metal contamination, pretreat with ~ 2 bed volumes of a 10% HCl solution.
What is a Dowex resin made of?
Strong, insoluble structure—DOWEX fine mesh resins are based on a microporous copolymer of styrene and divinylbenzene (DVB) that results in maximum resistance to oxidation, reduction, mechanical wear and breakage.
What does an ion exchange filter do?
What do ion exchange filters remove?
To maintain proper neutrality of water, ion exchange filters help achieve the equal removal of both negatively and positively charged ions, as appropriate.
How do you regenerate cation exchange resin?
The steps are:
- Backwash resin bed to separate the cation from the anion resin.
- Let the resins settle.
- Optionally: drain the water down to the resin bed surface.
- Inject caustic soda diluted in demineralised water.
- Displace the caustic with dilution water.
- Inject acid diluted in demineralised water.
How often should water softener resin be replaced?
every 10 years
Water softener resin will usually need to be replaced every 10 years. Resin that’s exposed to high levels of chlorine, iron, or water hardness will only last around 5 years. The lifespan of the resin depends on the quality of the water it is treating.