Detection and removal of copper from wastewater streams from sem

Details Detection and removal of copper from wastewater streams from sem Detection and removal of copper from wastewater streams from sem

1998-07-13

2000-10-31

Ludlow, Jan

Chemistry: analytical and immunological testing

Condition responsive control

210709, 210712, 210729, 210732, 210736, 210739, 422 62, 422 8208, 436 80, 436172, G01N 2164

Patent

active

061401307

ABSTRACT:
A system and method for the detection and removal of copper from wastewater streams from semiconductor or printed circuit board manufacturing is described and claimed. The detection system and method involve the addition of a reagent that reacts with copper to quench the fluorophore present, with the decrease in fluorescence being detected by a fluorometer. The reduction of fluorescence is then used to calculate the amount of copper present in the form of Cu+2 ion in the wastewater. The removal system and method involve either the addition of a polymer that reacts with copper to form an insoluble precipitate with said precipitate then being removed by using any technique commonly known in the art; or the use of an ion exchange column to remove the copper from the wastewater stream.

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