In this application, ion-exchange resins are used to replace the magnesium and calcium ions found in hard water with sodium ions. When the resin is fresh, it contains sodium ions at its active sites. When in contact with a solution containing magnesium and calcium ions (but a low concentration of sodium ions), the magnesium and calcium ions preferentially migrate out of solution to the active sites on the resin, being replaced in solution by sodium ions. This process reaches equilibrium with a much lower concentration of magnesium and calcium ions in solution than was started with.
The resin can be recharged by washing it with a solution containing a high concentration of sodium ions (e.g. it has large amounts of common salt (NaCl) dissolved in it). The calcium and magnesium ions migrate from the resin, being replaced by sodium ions from the solution until a new equilibrium is reached. The salt is used to recharge an ion-exchange resin, which itself is used to soften the water.
Model | Description | Download |
TC001D | Macroporous Type Strong Acid Cation Exchange Resin. | PDF |
TC001DU | Uniform Particle Size Macroporous Type Strong Acid Cation Exchange Resin. | |
TC004 | Gel Type Strong Acid Cation Exchange Resin. | |
TC007 | Gel Type Strong Acid Cation Exchange Resin. | |
TC007B | Black Color Gel Type Strong Acid Cation Exchange Resin. | |
TC007C | Coarse Mesh Size Gel Type Strong Acid Cation Exchange Resin. | |
TC007F | Fine Mesh Size Gel Type Strong Acid Cation Exchange Resin. | |
TC007FG | Food Grade Gel Type Strong Acid Cation Exchange Resin. | |
TC007FGF | Food Grade Fine Mesh Gel Type Strong Acid Cation Exchange Resin. | |
TC007U | Uniform Particle Size Gel Type Strong Acid Cation Exchange Resin. | |
TC008 | High Capacity Gel Type Strong Acid Cation Exchange Resin. | |
TC008B | Black Color Gel Type Strong Acid Cation Exchange Resin. | |
TC008C | Coarse Mesh Size Gel Type Strong Acid Cation Exchange Resin. | |
TC008F | Fine Mesh Size Gel Type Strong Acid Cation Exchange Resin. | |
TC008FG | Food Grade Gel Type Strong Acid Cation Exchange Resin. | |
TC008FGF | Food Grade Fine Mesh Gel Type Strong Acid Cation Exchange Resin. | |
TC008U | Uniform Particle Size Gel Type Strong Acid Cation Exchange Resin. | |
TC010 | High Cross Linkage Gel Type Strong Acid Cation Exchange Resin. | |
TC010B | Black Color Gel Type Strong Acid Cation Exchange Resin. | |
TC010C | Coarse Mesh Size Gel Type Strong Acid Cation Exchange Resin. | |
TC010F | Fine Mesh Size Gel Type Strong Acid Cation Exchange Resin. | |
TC010FG | Food Grade Gel Type Strong Acid Cation Exchange Resin. | |
TC010FGF | Food Grade Fine Mesh Gel Type Strong Acid Cation Exchange Resin. | |
TC010U | Uniform Particle Size Gel Type Strong Acid Cation Exchange Resin. | |
TC112 | Gel Type Weak Acid Cation Exchange Resin. | |
TC113D | Macroporous Weak Acid Cation Exchange Resin. | |
TC113DF | Fine Mesh Size Macroporous Weak Acid Cation Exchange Resin. | |
TC113FGD | Food Grade Macroporous Weak Acid Cation Exchange Resin. | |
TC113FGD-F | Food Grade Macroporous Weak Acid Cation Exchange Resin. | |
TC115FGD | Food Grade Macroporous Weak Acid Cation Exchange Resin. |
