Solvent extraction of phenols from water

Conference · Tue Jan 01 04:00:00 EST 1980 · AIChE Pap.; (United States)

OSTI ID:6321408

Greminger, D C; King, C J; Burns, G P; Lynn, S; Hanson, D H

Methyl isobutyl ketone (MIBK) and diisopropyl ether (DIPE) were evaluated as solvents for extraction of phenols from water by measuring the equilibrium distribution coefficients (K/sub d/) as a function of pH for phenol, dihydroxybenzenes, and trihydroxybenzenes at 25/sup 0/C. MIBK gave much higher K/sub d/ values than DIPE, particularly for the polyhydric phenols, so that solvent-to-water mass flow ratios (S/W) exceeding 0.14 and 0.39 would be required at low pH for effective removal of di- and trihydric phenols, respectively, with MIBK, compared with S/W greater than or equal to 1.4 and 8, respectively, for DIPE. The effect of pH was described by a simple ionization model. In the phenol/water/MIBK system, K/sub d/ values increased with decreasing temperature (30 to 75/sup 0/C) at all concentrations, and at 30/sup 0/C, they were high enough for the effective extraction of phenol contained at up to 20% by wt in the organic phase. Vacuum steam stripping was the best choice for the removal of residual dissolved MIBK. Extraction with MIBK may thus be used to recover, rather than degrade, phenols contained in aqueous streams from refining, petrochemical, and coal conversion processes.

• Research Organization: California Univ., Berkeley
• OSTI ID: 6321408
• Report Number(s): CONF-800610-
• Conference Information: Journal Name: AIChE Pap.; (United States) Journal Volume: 58A
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
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02 PETROLEUM
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37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400105 -- Separation Procedures
AQUEOUS SOLUTIONS
AROMATICS
CHEMICAL EFFLUENTS
CHEMICAL PLANTS
COAL LIQUEFACTION PLANTS
COAL PREPARATION PLANTS
COMPARATIVE EVALUATIONS
DATA
DISPERSIONS
DISTRIBUTION FUNCTIONS
EQUILIBRIUM
ETHERS
EXPERIMENTAL DATA
EXTRACTION
FUNCTIONS
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
INDUSTRIAL PLANTS
INFORMATION
KETONES
LIQUID WASTES
MATHEMATICAL MODELS
MEDIUM TEMPERATURE
METHYL ISOBUTYL KETONE
MIXTURES
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
ORGANIC SOLVENTS
OXYGEN COMPOUNDS
PETROCHEMICAL PLANTS
PETROLEUM REFINERIES
PH VALUE
PHENOLS
PROCESSING
RECOVERY
REFINING
REMOVAL
SEPARATION PROCESSES
SOLUTIONS
SOLVENT EXTRACTION
SOLVENT PROPERTIES
SOLVENTS
WASTE WATER
WASTES
WATER
WATER TREATMENT