Novel sorbents for coal conversion wastewater treatment. [3,5-dichlorophenol]
In this report results from a study undertaken to scale-up the clay modification procedure are described. Hitherto, adsorption of toxic organics found in coal conversion wastewater onto modified clays was carried out in a batch mode utilizing small amounts of the adsorbents. A realistic evaluation of the potential of modified clays as adsorbents under field conditions necessitates the development of continuous wastewater treatment schemes requiring larger amounts of the adsorbents. Hence a need arose for the scale-up of clay modification procedure. Three types of surfactant-modified clays, namely, cetylpyridinium-emathlite (CPC-EMAT), cetylpyridinium-montmorillonite (CPC-MONT), and cetylpyridinium hydroxy aluminum montmorillonite (CPC-HYDAL-MONT) were prepared by a one-step method discussed in our previous report (ref.8). Emathlite (EMAT) is a commercial mixture of clay materials, whereas montmorillonite is a well-characterized, research-grade smectite. Comparison of the amounts of adsorbed surfactant prepared by this method and an earlier method showed that the two procedures yielded identical results. Using 3,5-dichlorophenol (DCP) as a toxic organic, packed bed adsorption experiments were carried out with CPC-EMAT and CPC-HYDAL-MONT as adsorbents. A step input of the adsorbate at different flow rates was used and the dynamic adsorption capacity of the adsorbents for the toxic organic (i.e. DCP) was determined. 12 refs., 5 figs., 3 tabs.
- Research Organization:
- Michigan Univ., Ann Arbor, MI (United States). Dept. of Chemical Engineering
- Sponsoring Organization:
- USDOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- FG22-87PC79918
- OSTI ID:
- 5794534
- Report Number(s):
- DOE/PC/79918-T7; ON: DE92007929
- Country of Publication:
- United States
- Language:
- English
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Novel sorbents for coal conversion wastewater treatment
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Related Subjects
36 MATERIALS SCIENCE
CLAYS
MODIFICATIONS
SORPTIVE PROPERTIES
MONTMORILLONITE
PHENOLS
ADSORBENTS
DESORPTION
SMECTITE
WASTE WATER
WATER TREATMENT
ADSORPTION
COAL
CONVERSION
EXPERIMENTAL DATA
PACKED BEDS
PROGRESS REPORT
SURFACTANTS
AROMATICS
CARBONACEOUS MATERIALS
DATA
DOCUMENT TYPES
ENERGY SOURCES
FOSSIL FUELS
FUELS
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
INFORMATION
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
LIQUID WASTES
MATERIALS
MINERALS
NUMERICAL DATA
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
SILICATE MINERALS
SORPTION
SURFACE PROPERTIES
WASTES
WATER
010800* - Coal
Lignite
& Peat- Waste Management
010400 - Coal
Lignite
& Peat- Processing
360606 - Other Materials- Physical Properties- (1992-)