A combination of solvent extraction and freeze thaw for oil recovery from petroleum refinery wastewater treatment pond sludge.
作者： Guangji Hu , Jianbing Li , Haobo Hou
DOI: 10.1016/J.JHAZMAT.2014.10.028
关键词:
摘要: A combination of solvent extraction and freeze thaw was examined for recovering oil from the high-moisture petroleum refinery wastewater treatment pond sludge. Five solvents including cyclohexane (CHX), dichloromethane (DCM), methyl ethyl ketone (MEK), ethyl acetate (EA), and 2-propanol (2-Pro) were examined. It was found that these solvents except 2-Pro showed a promising oil recovery rate of about 40%, but the recycling of DCM solvent after oil extraction was quite low. Three solvents (CHX, MEK and EA) were then selected for …
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