Cyanide Degradation by Direct and Indirect Electrochemical Oxidation in Electro-active Support Electrolyte Aqueous Solutions
JOURNAL OF THE MEXICAN CHEMICAL SOCIETY(2011)
摘要
The cyanide degradation was performed in an electrochemical reactor (with anode of reticulated vitreous carbon and cathodes of graphite) with three compartments separated by a polymeric membrane. The experiments were made under different conditions; supporting electrolytic media (NaOH, NaCl, NaNO(3) and Na(2)SO(4)), applied potentials (3.0, 4.0, 5.0 and 6.0 V) and volumetric flows of 130, 240, 480, 1058 and 1610 mL/min with recirculation. The best conditions for the cyanide degradation are: NaCl (0.1 M) as supporting electrolyte, applied cell potential of 5.0 V and volumetric flow of 480 mL/min. Under these conditions almost 100% of cyanide degradation was achieved.
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关键词
cyanide,electrochemical reactor,electrolyte,reticulated vitreous carbon,polymeric membrane
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