Simultaneous recovery of heavy metals and degradation of organic species – copper and ethylenediaminetetra-acetic acid (EDTA)
✍ Scribed by Abdul J Chaudhary; John D Donaldson; Susan M Grimes; Mukhtar -ul- Hassan; Robert J Spencer
- Publisher
- Wiley (John Wiley & Sons)
- Year
- 2000
- Tongue
- English
- Weight
- 98 KB
- Volume
- 75
- Category
- Article
- ISSN
- 0268-2575
No coin nor oath required. For personal study only.
✦ Synopsis
In mixed industrial ef¯uent the presence of metal ions can retard the destruction of organic contaminants and the ef®ciency of recovery of metal is reduced by the presence of the organic species. Results are presented for a copper±ethylenediaminetetra-acetic acid (EDTA) system in which both effects occur. An electrochemical cell alone can be used to recover copper in pH range 1.5±4.5 but is not capable of achieving complete mineralisation of EDTA by anodic oxidation. A photolytic cell alone can achieve the destruction of EDTA at pH 3.5 but leaves copper in solution. A combined photolytic± electrochemical system using an activated carbon concentrator cathode achieves the rapid simultaneous destruction of EDTA and recovery of copper.