2010•Journal of Central South University(Science and Technology)Requires access
Electrochemical degradation of organic wastewater containing EDTA with three-dimensional electrode reactor
Na Zhao
Open publisher page 2 citations
Abstract
The electrochemical degradation of organic wastewater containing EDTA was investigated using a novel three-dimensional electrode reactor.The results show that using activated carbon as particle electrode,EDTA in organic wastewater can be efficiently removed by ?OH radicals produced in the reactor,while its removal efficiency is significantly dependent on current,electric conductivity and pH of the wastewater.EDTA is firstly degraded into primary amine during the action of ?OH radicals,then mineralized into CO2,H2O and NH3.The removal efficiency of total organic carbon(TOC) is 96.40% at 200 mA,0.15 S/m of electric conductivity,1 h of electrolysis time,25 ℃,200 mL/min of influent flow rate,pH 6.0.The removal efficiency of TOC maintains 90% when it is circulated times is 50.