(720e) An Innovative Approach on the Separation of Metal
AIChE Annual Meeting
2008
2008 Annual Meeting
Separations Division
Poster Session: Fundamentals and Applications of Extraction
Thursday, November 20, 2008 - 6:00pm to 8:30pm
Polystyrene-grafted-polyglycidol (PS-PG), a water-compatible resin, is applied for the extraction of precious metal in effluents of electroplating process. The extractions of gold (I) and silver (I) cyanide using this resin are investigated. More than 99% of gold and 99% of silver ions of the originally dissolved could be extracted from the aqueous phase to polymer phase. Recycling of the resins is possible and no deterioration in extraction performance was observed. Thiolation on the chemical structure shows improvement on the extraction capability and separation efficiency. The PS-PG group resin is a good option for metal extraction and separation because it is economical, environmental-friendly, non-toxic, non-flammable and inexpensive.
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