Degradation of Monochloroacetic Acid by Anodic Contact Glow Discharge Electrolysis
H. Yang, X. Zhao, B. An, S. Wang, W. Jin, L. Li, Y. Dong, and H. Chi
School of Chemical Engineering, University of Science and Technology Liaoning, China
Abstract- Degradtion of monochloroacetic acid (MCA) in water was carried out using anodic contact glow discharge electrolysis (CGDE). Accompanying the decay of MCA, the amount of total organic carbon (TOC) in the solution correspondingly decreased; meanwhile chlorine atom of MCA was released as chloride ion. It was revealed that the decay of both MCA and TOC obeyed a first-order rate law. Formate was obtained as the by-product. A reaction pathway involving successive attack of hydroxyl radical to the hydrogen atoms on the ﾎｱ-carbon of MCA was assumed on the basis of the observed products and kinetics.
Keywords- Monochloroacetic acid, degradation, contact glow discharge electrolysis, first-order rate law