scholarly journals Use of solid waste for chemical stabilization: Adsorption isotherms and {sup 13}C solid-state NMR study of hazardous organic compounds sorbed on coal fly ash

1993 ◽  
Author(s):  
D.A. Netzel ◽  
D.C. Lane ◽  
J.F. Rovani ◽  
J.D. Cox ◽  
J.A. Clark ◽  
...  
Keyword(s):  
Fly Ash ◽  
Solid State ◽  
Solid Waste ◽  
Organic Compounds ◽  
Adsorption Isotherms ◽  
Solid State Nmr ◽  
Coal Fly Ash ◽  
Chemical Stabilization ◽  
Nmr Study ◽  
Hazardous Organic Compounds

Adsorption Isotherms and 13C Solid-state NMR Study of Hazardous Organic Compounds Sorbed on Coal Fly Ash

1997 ◽  
Author(s):  
Daniel A. Netzel ◽  
Francis P. Miknis
Keyword(s):  
Fly Ash ◽  
Organic Compounds ◽  
Coal Fly Ash ◽  
Chemical Properties ◽  
Fly Ashes ◽  
Coal Fly Ashes ◽  
Hazardous Organic Compounds ◽  
Solvent Molecules ◽  
Commercial Applications ◽  
Hematite Fe2o3

Fly ash is a by-product from the combustion of coal. The 1985 annual US production was estimated to be about 1 x 108 metric tons. The utilization of fly ash during the 1980s remained stable at about 25% per year. Because of its pozzolanic properties, nearly 50% of the utilized fly ash is consumed in the production of cement and concrete. The vast quantity of fly ash that is not being used and its availability throughout the country and worldwide have motivated research for new uses in commerce and industry. Little is known of the organic adsorbent properties of fly ash. However, if they are found to be favorable, the potential commercial applications of the adsorptive characteristics of fly ash could include its use as an adsorbent sandwich for organics in combination with landfill or other dump-site liners, in traps for organics in waste waters, in filters for organics in process air streams, and as a stabilizer for organic wastes in drums. Variables that may affect the adsorbability of the fly ash towards organics in water include temperature; solution pH; and interactions between solute molecules and fly ash, and between solvent molecules and fly ash. Thus, there is an essential need to characterize each coal fly ash type to enable potential correlation between coal fly ash structural properties and the effectiveness of the adsorption characteristics of coal fly ash for immobilizing organic hazardous waste compounds. The composition and properties of pulverized fly ash depend on the type of coal burned and the nature of the combustion process. Thus, fly ashes from different origins may have significantly different sorption properties towards organic compounds of environmental interest. Eastern and western coal fly ashes differ significantly in their physical and chemical properties. The major minerals found in coal fly ash are α-quartz (SiO2), mullite (3A12O3 ·2SiO2), hematite (Fe2O3), magnetite (Fe3O4), lime (CaO), and gypsum (CaSO4·2H2O). Little is known of the coordination state and distribution of siliceous and aluminous material in coal fly ashes. Most siliceous and aluminous materials in fly ash are amorphous and thus are not detected or quantified by X-ray techniques.

The adsorption of chromocene and ferrocene on silica: A solid-state NMR study

2013 ◽  
Vol 744 ◽  
pp. 119-124 ◽  
Author(s):  
Kyle J. Cluff ◽  
Michael Schnellbach ◽  
Casie R. Hilliard ◽  
Janet Blümel
Keyword(s):  
Solid State ◽  
Solid State Nmr ◽  
Nmr Study

Investigating Sorption on Iron−Oxyhydroxide Soil Minerals by Solid-State NMR Spectroscopy:  A6Li MAS NMR Study of Adsorption and Absorption on Goethite

2005 ◽  
Vol 109 (39) ◽  
pp. 18310-18315 ◽  
Author(s):  
Ulla Gro Nielsen ◽  
Younkee Paik ◽  
Keinia Julmis ◽  
Martin A. A. Schoonen ◽  
Richard J. Reeder ◽  
...  
Keyword(s):  
Solid State ◽  
Nmr Spectroscopy ◽  
Solid State Nmr ◽  
Mas Nmr ◽  
Iron Oxyhydroxide ◽  
Soil Minerals ◽  
Solid State Nmr Spectroscopy ◽  
Nmr Study

Dynamics of benzimidazole ethylphosphonate: a solid-state NMR study of anhydrous composite proton-conducting electrolytes

2013 ◽  
Vol 15 (41) ◽  
pp. 17983 ◽  
Author(s):  
Z. Blossom Yan ◽  
Nicole E. De Almeida ◽  
Jason W. Traer ◽  
Gillian R. Goward
Keyword(s):  
Solid State ◽  
Solid State Nmr ◽  
Proton Conducting ◽  
Nmr Study
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