Cyanide Degradation by Direct and Indirect Electrochemical Oxidation in Electro-active Support Electrolyte Aqueous Solutions
DOI:
https://doi.org/10.29356/jmcs.v55i1.851Keywords:
cyanide, electrochemical reactor, electrolyte, reticulated vitreous carbon, polymeric membraneAbstract
The cyanide degradation was performed in an electrochemicalreactor (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, NaNO3 and Na2SO4),
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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