What are ion exchange resins?

Ion exchange resins are polymers that are capable of exchanging particular ions within the polymer with ions in a solution that is passed through them. This ability is also seen in various natural systems such as soils and living cells.

What are anion exchange resins made of?

Anion exchange resins consist of a polymeric matrix, typically made from polystyrene or acrylic materials, with functional groups such as quaternary ammonium or tertiary amino groups attached. These functional groups enable the resin to exchange anions with those present in a solution. How do anion exchange resins work?

Can cationic exchange resins prevent the formation of sludge waste?

In this research, cationic exchange resins are used to prevent the formation of sludge waste in the concentrated latex by prior removal of the Mg 2+ ions from the field natural rubber latex instead of using chemical precipitation with DAP.

How are inorganic ion exchangers and cellulose based resins delivered?

Inorganic ion exchangers and cellulose based resins are delivered mostly in a dry state in appropriate packing. The packing prevents contamination of the ion exchanger during its transport and storage.

When were synthetic ion exchange materials invented?

Synthetic ion exchange materials based on coal and phenolic resins were first introduced for industrial use during the 1930 s. A few years later resins consisting of polystyrene with sulphonate groups to form cation exchangers or amine groups to form anion exchangers were developed (Figure 1).

What happens if a resin is dissolved in water?

For dilute solutions Suppose a resin has greater affinity for ion B than for ion A. If the resin contains ion A and ion B is dissolved in the water passing through it, then the following exchange takes place, the reaction proceeding to the right (R represents the resin): BR + An±