Peteypete,
I'm curious about the acid resin you used? Can you provide any more info? I'm dealing with drinking water supplies that are treated to <10 ppb.
Chad
lattar,
The most common industrial Cr treament method (i.e. when influent Cr concentrations are in mg/L concentrations) is reduction/precipitation/fitration. In this process, the Cr6 is reduced to Cr3 typically by some reductant (Fe2 - both ferrous chloride and ferrous sulfate work well...
lattar,
This question requires a BIG answer, so I'll just touch base on a couple issues you raise. You can post back and get in touch with me directly if you'd like. My firm has been doing research on Cr6 removal from drinking water for about 3 years now and it is the focus of my PhD...
