DOC-Labor
Dr. Stefan Huber
Power Plant - Example 4
Strong base anion filter fouled with organics
If pre-treatment and/or service operation is not sufficient the strong base anion filter may suffer organic fouling.

Indicative for this is the presence of biopolymers in circulation waters. Although biopolymers are
”neutral” they carry some charge.

Charge density is too low however to get adsorption by ion exchange. Adsorption is governed by numerous hydrogen bonds which can develop if
”random coils” align to resin surfaces.

The presence of (anionic!) humics, building blocks and LMW acids is secondary and reflects material released together with the biopolymers.



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Examples: