RECYCLING OF PLATING ELECTROLYTES

Objective

The practical application of supported liquid membranes to the problem of recycling of plating electrolytes has been demonstrated. Cu++ and Pb++ can be efficiently extracted with this technique. The application of electroassisted extraction to anions appears to be an appropriate technique for anion extraction, although more work is necessary to quantify it.
The recycling of plating baths using new concepts in electroassisted liquid-liquid transfer will be investigated. The problems of specific extraction of both anions and cations from spent electrolyte from plating baths will be addressed. A new approach to control the extractant binding constant based on redox swithching of the ligand will be developed. Anion extraction using ion pairing properties of the ligand will be used for the separation of anions of commercial interest present in spent electrolyte. Three separation strategies will be explored, direct liquid-liquid extraction, SLM and electroassisted separations. In the latter case, an electrodialysis module designed specifically to work with supported liquid membranes will be developed and a demonstration module will be tested in an industrial environment.

Fields of science

• engineering and technology › environmental engineering › waste management › waste treatment processes › recycling
• engineering and technology › chemical engineering › separation technologies › desalination › electrodialysis

Programme(s)

• FP3-BRITE/EURAM 2 - Specific programme (EEC) of research and technological development in the field of industrial and materials technologies, 1990-1994

Topic(s)

• 1.2.1 - Recycling and recovery of industrial waste including non-ferrous metals

Call for proposal

Data not available

Funding Scheme

CSC - Cost-sharing contracts

Coordinator

UNIVERSITY OF LIVERPOOL

Address

Liverpool
United Kingdom

Participants (4)

BULL SA

France

Address

331 Avenue Patton
49004 Angers

EA Technology Ltd

United Kingdom

Address

Capenhurst
CH1 6ES Chester

KATHOLIEKE INDUSTRIELE HOGESCHOOL

Belgium

Address

Gebroeders Desmetstraat 1
9000 Gent

SIEMENS NV

Belgium

Address

Siemenslaan
8020 Oostkamp