|ION EXCHANGE||Update 5 July 2009|
The temperature limit is valid for permanent exposure in service, and for regeneration.
The limit of organic load corresponds to the quantity of organics passing through the resin during one run. Not all the organic matter is removed!
Another way of assessing the suitability of the resin without calculation of the organic load is to use the fouling index of the water. This fouling index is defined as:
g as KMnO4
per L resin
|SBA styrenic type 1, gel||60||2||3|
|SBA styrenic type 2, gel||35||3||6|
|SBA styrenic type 1, macroporous||60||4||6|
|SBA styrenic type 2, macroporous||35||5||10|
|SBA Acrylic, macroporous||60||15||18|
|SBA nitrate selective, macroporous||35||2||3|
|WBA styrenic, macroporous||60||12||12|
|WBA acrylic, gel||60||25||20|
|WBA boron selective||40||5||6|
Sensitivity to organics and temperature may vary according to the properties of the resin, notably their porosity. However the above data can be considered as a good guideline.
The "Total Anions" value shown in the fouling index are those forming the anionic load of the resin, after degasifier if any. It is difficult to calculate for WBA/SBA couples.
© François de Dardel