Journal ArticleDOI
The catalytic and photocatalytic activity of coal fly ashes
Ralph Dlugi,Hans Güsten +1 more
TLDR
In this article, the catalytic and photocatalytic activity of two samples of fly ash from two different coal-fired power plants have been demonstrated for two reactions of environmental significance, namely, the heterogeneous SO 2 oxidation in a smog chamber and the photochemical degradation of two polynuclear aromatic hydrocarbons adsorbed onto the fly ashes.About:
This article is published in Atmospheric Environment.The article was published on 1983-01-01. It has received 26 citations till now. The article focuses on the topics: Fly ash.read more
Citations
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Journal ArticleDOI
The surface structure and reactivity of black carbon
Dwight M. Smith,Chughtai Abdul R +1 more
TL;DR: In this paper, Fourier transform infrared (FT-IR) spectroscopy has been used to reveal the structure and reactivity of black carbon (in the form of n -hexane soot).
Journal ArticleDOI
A three‐dimensional global model investigation of seasonal variations in the atmospheric burden of anthropogenic sulfate aerosols
TL;DR: In this paper, a global three-dimensional chemical transport model is used to investigate seasonal variations of anthropogenic sulfur in the troposphere, and detailed comparisons of the modeled surface sulfur dioxide (SO2) and sulfate (SO4) concentrations and sulfates wet deposition fluxes with measurements from the Eulerian Model Evaluation Field Study (EMEFS) and Cooperative Program for Monitoring and Evaluation of the Long Range Transmission of Air Pollutants in Europe (EMEP) field programs in North America and Europe, respectively.
Journal ArticleDOI
Growth laws for atmospheric aerosol particles: An examination of the bimodality of the accumulation mode
TL;DR: In this paper, the authors examined the growth of atmospheric aerosol particles by first deriving growth laws and their corresponding time scales for all the important aerosol processes: condensation, coagulation, aqueous-phase reactions in droplets, and reactions taking place at the interface of two phases.
Journal ArticleDOI
A smog chamber for studies of the photochemical degradation of chemicals in the presence of aerosols
TL;DR: In this paper, a smog chamber was designed for the simulation of the tropospheric photochemical degradation of chemicals adsorbed on aerosol surfaces, and the results of experiments on the degradation of simple alkanes (up to n-nonane) and aromatics in the absence and presence of aerosols (SiO2 and TiO2) were reported.
Journal ArticleDOI
Oxidative Decolorization of Reactive Dye Solution Using Fly Ash as Catalyst
Swades K. Chaudhuri,Babita Sur +1 more
TL;DR: In this article, coal fly ash is used as a heterogeneous catalyst in peroxidative decolorization of aqueous solution of several reactive drimarene dyes using hydrogen peroxide (H2O2).
References
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Journal ArticleDOI
Molecular Spectroscopy by Means of ESCA II. Sulfur compounds. Correlation of electron binding energy with structure
TL;DR: In this article, a correlation has been established between the observed position of inner electron lines of sulfur and structure, and the influence of structure on the electron binding energies is discussed in terms of a calculated atomic charge, based on the concepts of electronegativity and partial ionic character of bonds.
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Physical and morphological studies of size-classified coal fly ash
Gerald L. Fisher,Bruce A. Prentice,David Silberman,John M. Ondov,Arthur H. Biermann,Richard C. Ragaini,Andrew R. McFarland +6 more
TL;DR: In this article, the physical and morphological properties of four fractions of size-classified coal fly ash are reported, and the density variation with particle size is explained in terms of the relative abundances of predominant particle types.
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Chemical Species in Fly Ash from Coal-Burning Power Plants
TL;DR: Fly ash specimens from four power plants in the Tennessee Valley Authority system have been separated into three matrices: glass, mullite-quartz, and magnetic spinel, revealing the magnetic component of fly ash is ferrite.
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Compound forms of fossil fuel fly ash emissions
TL;DR: X-ray diffraction, Fourier transform infrared, and chemical-phase analyses were performed to determine elemental compositions of samples, and water-soluble sulfates are the predominant species present in oil-fired particulate emissions.
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Resistance to photochemical decomposition of polycyclic aromatic hydrocarbons vapor-adsorbed on coal fly ash
TL;DR: In this paper, five polycyclic aromatic hydrocarbons (PAHs) were shown to resist photodegradation when adsorbed on coal flyash, and the environmental consequences of PAH's adsorption to photochemical transformation were discussed.