A study of some wastewater contaminants
Coal conversion processes (liquefaction and gasification) always generate process wastewaters containing relatively high concentrations of toxic phenolic organic compounds, ammonia, cyanide, hydrogen sulfide, as well as, certain toxic heavy metals. Studies in our laboratory show that these metal ions react with the phenolic compounds to form complex ions and coordination compounds. The interaction of iron(III), copper(II), zinc(II), cobalt(II) dichromate ion, and dioxouranium(VI) ion with our model reagent 2-hydroxymethyl- 6(2{prime}-hydrozymethyl-5{prime}- hydrozy-4{prime} pyrone-6{prime}) pyranyl(3,2-b) pyran-4,8-dione has been studied. The formation constants and coordination numbers for most of these ions have been determined using the polarography. Polarographic studies carried out on Zn{sup +2}, Co{sup +2}, and Cr{sub 2}O{sub 7}{sup =} under the conditions used in this study were not completely reproducible. These studies, in aqueous media, suggest that there is a substantial and material need to study the extent of transport of metal complexes across the aqueous organic interface in the liquid-liquid extraction of coal-conversion process wastewaters.
- Research Organization:
- Texas Southern Univ., Houston, TX (USA). Dept. of Chemistry
- Sponsoring Organization:
- DOE/FE
- DOE Contract Number:
- FG22-85PC80541
- OSTI ID:
- 6203140
- Report Number(s):
- DOE/PC/80541-T13; ON: DE89004334
- Country of Publication:
- United States
- Language:
- English
Similar Records
A study of some wastewater contaminants: Seventh quarterly report for the period March 17, 1986 through June 15, 1987
Study of some wastewater contaminants. Third quarterly report, March 16-June 15, 1986
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010404 -- Coal
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010405 -- Coal
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010800* -- Coal
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37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
AROMATICS
CHARGED PARTICLES
CHELATES
CHEMICAL REACTIONS
CHROMIUM COMPOUNDS
COAL GASIFICATION
COAL LIQUEFACTION
COBALT IONS
COMPLEXES
COORDINATION NUMBER
COPPER COMPLEXES
COPPER IONS
DICHROMATES
DOCUMENT TYPES
ELEMENTS
EXTRACTION
GASIFICATION
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
IONS
IRON COMPLEXES
LIQUEFACTION
LIQUID WASTES
MANAGEMENT
METALS
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PHENOLS
POLAROGRAPHY
POLLUTANTS
PROGRESS REPORT
SEPARATION PROCESSES
SOLVENT EXTRACTION
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENT COMPLEXES
TRANSITION ELEMENT COMPOUNDS
WASTE MANAGEMENT
WASTE WATER
WASTES
WATER
WATER TREATMENT
ZINC COMPLEXES
ZINC IONS