Laboratory and pilot scale photodegradation of cyanide-containing wastewaters
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Gdansk University of Technology
University of Utah
Publication date: 2005-01-01
Physicochem. Probl. Miner. Process. 2005;39(1):229–248
Cyanide degradation efficiency using advanced oxidation methods was investigated. Model cyanide solutions in TiO2/UV and H2O2/UV systems were degraded for different pH, temperature, gas phase, and kind of catalyst. Laboratory experiments of cyanide photodegradation were carried out in homogeneous UV/H2O2, and heterogeneous UV/TiO2 systems using different forms of catalyst. For the first time cyanide degradation using TiO2 supported on glass microspheres has been studied. Photodegradation of cyanide was enhanced by addition of hydrogen peroxide and copper ions. Almost 20 % increase in cyanide oxidation efficiency was observed for photocatalytical oxidation of copper cyanide complexes. Moreover, cyanide photodegradation in an Air Sparged Hydrocyclone (ASH) unit was examined.