I had not normally thought of this as a viable purification method, however I just picked up copy of CL Stong's Amateur Scientist book from the 70's and there on the Electroph. article is a discussion about a 30 inch vertical plate with the charge applied across the entire horizontal vector... The individual used it for rapid large scale purification, by catching the right, left and middle flows down the plate...
This strikes me as a novel method for purification/separation that could be accomplished with say, electrolytess, glass plate, fiberglass cloth and 200 volts D.C., without the vac distillation etc...
Any thoughts?
Infinite Radiant Light - THKRA