Standard Test Method for Operating Performance of Anion-Exchange Materials for Strong Acid Removal

Importancia y uso:

5.1 This test method can be used for evaluating performance of commercially available anion-exchange materials regardless of the basic strength of the ion exchange groups. When previous operating history is known, a good interpretation of resin fouling or malfunction can be obtained by comparison against a reference sample of unused ion-exchange material evaluated in the same way.

5.2 While resistivity has been chosen as the preferred analytical method for defining the exhaustion end point, with titration as the alternative, it is understood that observation of pH during rinse and the service run can yield useful information. The variations in pH observed with an ion exchange material suspected of having degraded, can be helpful in interpretation of performance when compared with similar data for a reference sample of unused material exhausted in the same way.

Subcomité:

D19.08

Referida por:

D5217-17R25

Volúmen:

11.02

Número ICS:

71.100.40 (Surface active agents)

Palabras clave:

anion resin; ion exchange; operating performance;