Purolite® S930Plus, Weak Acid Cation Resin, Iminodiacetic is a macroporous polystyrene based chelating resin, with iminodiacetic groups designed for the removal of heavy metals from industrial effluents. S930Plus finds use in processes for extraction and recovery of metals from ores, galvanic plating solutions, pickling baths and effluents. Further uses include the decalcification of brine for chloralkali processes, where S930Plus shows advantages under certain operating conditions over the typically used aminophosphonic type resins such as S940. S930Plus has high selectivity and capacity for hardness and strontium and has excellent osmotic stability.
S930Plus is susceptible to oxidation. Hence direct treatment of brine solutions containing free chlorine should be avoided, for instance by preliminary reaction with sulphur dioxide, sulphide or, by use of a treatment with activated carbon. Brine solutions can often contain significant concentrations of chlorates. In this case it is necessary to ensure that the displacement rinse prior to the acid regeneration is efficient, so as to avoid the formation of free chlorine from contact of chlorates in the brine solution with the regeneration acid.
- Application - Heavy Metals/Brine Decalcification/Copper and base metals
- Polymer Structure - Macroporous crosslinked polymer
- Appearance - Spherical Beads
- Functional Group - Iminodiacetic
- Ionic Form as Shipped - Na+
|Copper Capacity, (min.)||50 g/l|
|Total Capacity (min.)||2.9 eq/l (63.3 Kgr/ft3)|
|Moisture Retention||52 - 60 % (Na+ form)|
|Particle Size Range||425 - 1000 µm|
|<425 µm (max.)||2 %|
|Uniformity Coefficient (max.)||1.5|
|Reversible Swelling, H+ → Na+ (max.)||35 %|
|Shipping Weight (approx.)||750 - 800 g/l (46.9 - 50 lb/ft3)|
|Temperature Limit||80°C (176°F)|