타이타늄 스크랩 충진복극과 SUS316 전극을 이용한 수용성 절삭유의 처리

Abstract

In this study, the Ti scraps were used as bipolar packed-bed electrodes with SUS316 electrodes for treatment of soluble cutting fluid(SCF). The removal efficiency of COD_Cr from the SCF and oil and the Ti scraps were analysed in accordance with the Ti scrap density, current density, electrolyte type and concentration. The removal efficiency of COD_Cr after 60 min was 58.4 %, 56.2 %, 63.3 % and 60.3 % for a scrap density of 0, 10, 20 and 30 g/L, while the removal efficiency for oil was 61.8 %, 67.6 % and 65.3 % for a scrap density of 10, 20 and 30 g/L. In addition, the removal efficiency of COD_Cr after 60min was 63.3 %, 83.5 %, and 89.2 % and that of oil was 67.6 %, 79.8 % and 83.8 % for a current density 40, 60, and 80 A/m². Finally, after testing the system with no electrolyte or with either Na₂SO₄ or NaCl (5-10 mM), the highest removal efficiency of COD_Cr a nd o il was 8 9.2 %, and 83.8 %, with no electrolyte and a current density of 80 A/m². In conclusion, the removal of efficiency of COD_Cr and o il was maximized with a scrap density o f 20 g /L, a current density o f 80 A/m2, and non-electrolyte.