Park, Sung-Woo Lee, Jae-Young Kim, Kyung-Jo Yang, Jung-Seok Baek, Kitae 2024-01-20T19:34:38Z 2024-01-20T19:34:38Z 2021-09-05 2010-03 0149-6395 https://pubs.kist.re.kr/handle/201004/131663 A surfactant-enhanced washing process for the removal of waste lubricant oil from train station soil was investigated by performing batch and column experiments. Surfactants removed 24.8-29.1% of the lubricant oil from soil in batch system, while the removal was slightly lowered to 15.8-26.2% in the column experiment. Alkaline-enhanced surfactant washing increased the removal efficiency up to 52%, while the removal was 42% in alkaline soil washing. An alkaline solution enhanced the removal of lubricant oil from soil because of soap formation. Even though the alkali-enhanced surfactant washing/flushing process effectively removed the lubricant oil from the soil, the residual concentration still exceeded the Korean regulatory level. To meet that level, further research is needed to enhance the removal of the lubricant. English TAYLOR & FRANCIS INC Alkaline Enhanced-Separation of Waste Lubricant Oils from Railway Contaminated Soil Article 10.1080/01496395.2010.493838 1 SEPARATION SCIENCE AND TECHNOLOGY, v.45, no.12-13, pp.1988 - 1993 SEPARATION SCIENCE AND TECHNOLOGY 45 12-13 1988 1993 N scie scopus 000281580900039 2-s2.0-77956192793 Chemistry, Multidisciplinary Engineering, Chemical Chemistry Engineering Article; Proceedings Paper SURFACTANT HYDROCARBONS MECHANISM alkali-enhanced soil washing lubricant oil soap formation surfactant-enhanced soil washing