Effect of metal and glycol on mechanochemical dechlorination of polychlorinated biphenyls (PCBs).
This paper assesses the potential of mechanochemical method with fine metal powder, glycol and alkali for polychlorinated biphenyls (PCBs) removal from waste insulating oil. The effects of relevant parameters, such as kinds of chemicals, rate and time of milling were examined. After each run, the total PCBs content in waste insulating oil was measured. Polyethylene glycol 200, long chain-glycol was more effective than triethylene glycol and ethylene glycol, short chain-glycol as hydrogen donor in mechanochemical dechlorination of PCBs. A maximum of 99.9% PCBs removal (below 2 ppm) and 94% total chlorine removal were achieved with the mechanochemical process for 2 h.
Center for Environment Technology Research, Korea Institute of Science and Technology, PO Box 131, Cheongryang, Seoul, Republic of Korea. niw@kist.re.kr
In Wook
IW
Nah
Kyung-Yub
KY
Hwang
Yong-Gun
YG
Shul
D008670:Metals / Q000737:chemistry*; D011078:Polychlorinated Biphenyls / Q000737:chemistry* / Q000302:isolation & purification; D011092:Polyethylene Glycols / Q000737:chemistry*; D013997:Time Factors
D008670:Metals; D011092:Polyethylene Glycols; D011078:Polychlorinated Biphenyls