Solvent extraction for treating phenolic wastewater
A two-stage solvent extraction of phenolic wastewater was investigated. In the first step, phenolics are extracted with methylisobutyl ketone (MIBK). In the second step, MIBK (1 to 2 wt %), which dissolves in the wastewater is recovered by extraction with hexane. The phenolics were modeled in this study as phenol and resorcinol. For the first extraction step, the distribution coefficient K/sub D/ for resorcinol in the MIBK-water system was experimentally determined as a function of temperature and resorcinol concentration. The process was simulated on the computer with the ASPEN program, and the results were used to determine the effects of temperature and the MIBK/water ratio in the first extracter on process economics. Of the four cases studied, a water MIBK ratio of 5 and extraction temperatures of 303 K (30/sup 0/C) required the smallest capital and operating costs.
- Research Organization:
- Oak Ridge National Lab., TN (USA); Massachusetts Inst. of Tech., Oak Ridge, TN (USA). School of Chemical Engineering Practice
- DOE Contract Number:
- W-7405-ENG-26
- OSTI ID:
- 5953987
- Report Number(s):
- ORNL/MIT-363; ON: DE83014563
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
54 ENVIRONMENTAL SCIENCES
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
COAL GASIFICATION
WASTE WATER
COAL LIQUEFACTION
METHYL ISOBUTYL KETONE
SOLVENT PROPERTIES
PHENOLS
SOLVENT EXTRACTION
WASTE PROCESSING
A CODES
COMPUTER CODES
COMPUTERIZED SIMULATION
COST
HEXANE
RESORCINOL
SEPARATION PROCESSES
ALKANES
AROMATICS
DEVELOPERS
EXTRACTION
GASIFICATION
HYDROCARBONS
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
KETONES
LIQUEFACTION
LIQUID WASTES
MANAGEMENT
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
POLYPHENOLS
PROCESSING
SIMULATION
THERMOCHEMICAL PROCESSES
WASTE MANAGEMENT
WASTES
WATER
010800* - Coal
Lignite
& Peat- Waste Management
520200 - Environment
Aquatic- Chemicals Monitoring & Transport- (-1989)
400105 - Separation Procedures