부산대학교 도서관

This work shows the application of a rotating cylinder electrode (RCE) in the removal of Ni(II) content from an industrial effluent. The study was initially performed in model solution [Ni(II)]=1200 ppm = 0.02M. The model solution was prepared according to the physicochemical properties determined from rinse water from the electrolytic nickel process generated by a plastics chromium-plating industry. The operational conditions were determined from microelectrolysis (stainless steel 316L, RDE) characterization of this model solution. The recovery of Ni(0) in the RCE (SS 316L) was achieved at speed rotations within 300 {less than or equal to} w {less than or equal to} 900 rpm interval, at - 1.4 V vs. SSE under potentiostatic control with and without pH control. The removal of Ni(II) (initially 1200 ppm) reached 20 ppm in 60 minutes of electrolysis for ow= 300 rpm with pH control, 94.5% current efficiency, and energy consumption of 2.11 KWh m-3.