Author： Serikawa R.M. Isaka M. Su Q. Usui T. Nishimura T. Sato H. Hamada S.
Publisher： Springer Publishing Company
ISSN： 0021-891X
Source： Journal of Applied Electrochemistry, Vol.30, Iss.7, 2000-07, pp. : 875-883
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Abstract
Wet electrolytic oxidation of organics in the presence of electrolytes and externally added oxygen gas was investigated for wastewater treatment. The experimental apparatus was a 300 ml electrolytic batch autoclave operated mainly at 250 ^∘C and 7 MPa. The results showed that the presence of halide ions such as chlorides and bromides strongly catalyses the conversion of pollutant organic compounds to innocuous compounds such as CO_2 and water. The addition of external oxygen gas in wet electrolytic oxidation of acetic acid strongly suppressed the cathodic evolution of hydrogen gas and demonstrated a TOC removal profile with an apparent current efficiency higher than 100% for high concentration acetic acid solutions.
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