Electrochemical removal of tannins from aqueous solutions
The application of electrochemical methods to remove tannins from wastewater was investigated. Gallotannic acid was used as the reference substance. Electrochemical experiments were performed using platinum electrodes. Macroscale potentiostatic or galvanostatic electrolyses were carried out with sodium sulfate or sodium chloride as supporting electrolytes, to analyze direct and indirect oxidation processes. Operating variables such as pH and chloride concentration were considered to determine their influence on the efficiency and energy consumption of the process. The simulation of a pilot plant was carried out with a mathematical model, the parameters of which were determined by fitting of experimental profiles. The results of a preliminary investigation on the oxidation-coagulation process using sacrificial electrodes are also reported.
- Research Organization:
- Univ. degli Studi di Padova (IT)
- OSTI ID:
- 20015488
- Journal Information:
- Industrial and Engineering Chemistry Research, Vol. 39, Issue 2; Other Information: PBD: Feb 2000; ISSN 0888-5885
- Country of Publication:
- United States
- Language:
- English
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