(55j) Copper Oxide and Sodium Percarbonate System Supported with Iron Nanoparticles for the Simultaneous Degradation of Trichloroethane and Hexavalent Chromium

Copper oxide and sodium percarbonate system supported by iron nanoparticles was investigated for the simultaneous removal of trichloroethane and hexavalent chromium in the wastewater. The degradation efficiency was evaluated by finding the initial effect concentrations of chromium, trichloroethane and sodium percarbonate as well as the time intervals of sodium percarbonate addition to the aqueous solution. Experimental results confirmed that the removal rates of chromium and trichloroethane reached significantly up to 88.9 and 92.30 % respectively with an optimum dosage of 0.5 mM copper oxide and 1.5 mM Sodium percarbonate. It is presumed that copper oxide and sodium percarbonate promoted the reduction of hexavalent chromium and oxidation of trichloroethane that was completely controlled by iron-nanoparticles. The enhanced degradation of hexavalent chromium is attributed to the availability of the reactive sites of nanoparticles and production of ferrous ions increased the aqueous solution by dissolution and corrosion of nanoparticles. The synergetic role of copper oxide/sodium percarbonate/ iron nanoparticles was observed and identified as this system behaved as an activator for sodium percarbonate as well as reductant for the hexavalent chromium for their degradation purpose. Finally, this system has a great potential for the remediation of chlorinated organic solvents and heavy metals from the wastewater streams.