Journal article
Electrochemical treatment of industrial wastewater containing 5-amino-6-methyl-2-benzimidazolone: toward an electrochemical-biological coupling.
- Torres RA Laboratory of Environmental Biotechnology, Institute of Environmental Science and Technology, Swiss Federal Institute of Technology (EPFL), CH-1015 Lausanne, Switzerland.
- Sarria V
- Torres W
- Peringer P
- Pulgarin C
- 2003-09-27
Published in:
- Water research. - 2003
Benzimidazoles
Biodegradation, Environmental
Biological Availability
Bioreactors
Electrolysis
Industrial Waste
Oxidation-Reduction
Water Pollutants
Water Purification
English
We studied the electrochemical oxidation, on Pt anodes, of industrial wastewaters containing 5-amino-6-methyl-2-benzimidazolone (AMBI). Electrolysis of this non-biodegradable effluent produces simultaneous oxidation of AMBI and chloride ions. Highly oxidative chlorine intermediate species further boost the degradation of AMBI. Solution temperature, pH and current density affect little the degradation of AMBI. At our best conditions, AMBI was 100% degraded in 45 min. However, because the reaction intermediates exhibited high toxicity and non-biodegradability, the electrolysis had to continue for 3 more hours in order to obtain a biocompatible solution. Then, complete mineralization of the outputs from the electrolytic cells was readily achieved in a fixed bed biological reactor.
- Language
-
- English
- Open access status
- closed
- Identifiers
-
- DOI 10.1016/S0043-1354(03)00179-9
- PMID 14509698
- Persistent URL
- https://folia.unifr.ch/global/documents/127322
Statistics
Document views: 12
File downloads: