| Abstract: | Atmospheric Zn emissions from the burning of coal and tire-derived fuel (TDF) for power generation can be considerable. In an effort to lay the foundation for tracking these contributions, we evaluated the Zn isotopes of coal, a mixture of 95 wt % coal + 5 wt % TDF, and the particulate matter (PM) derived from their combustion in a power-generating plant. The average Zn concentrations and δ(66)Zn were 36 mg/kg and 183 mg/kg and +0.24‰ and +0.13‰ for the coal and coal + TDF, respectively. The δ(66)Zn of the PM sequestered in the cyclone-type mechanical separator was the lightest measured, -0.48‰ for coal and -0.81‰ for coal+TDF. The δ(66)Zn of the PM from the electrostatic precipitator showed a slight enrichment in the heavier Zn isotopes relative to the starting material. PM collected from the stack had the heaviest δ(66)Zn in the system, +0.63‰ and +0.50‰ for the coal and coal + TDF, respectively. Initial fractionation during the generation of a Zn-rich vapor is followed by temperature-dependent fractionation as Zn condenses onto the PM. The isotopic changes of the two fuel types are similar, suggesting that their inherent chemical differences have only a secondary impact on the isotopic fractionation process. |
| Genre: | Article |
| ProdID: | 70036245 |
| Citation Author: | Borrok, D. M.; Gieré , R.; Ren, M.; Landa, E. R. |
| Citation Contributing Office: | University of Texas at El Paso |
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| Citation End Page: | 9224 |
| Citation Issue: | 23 |
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| Citation Language: | English |
| Citation Larger Work Title: | Environmental Science and Technology |
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| Citation Number Of Pages: | 6 |
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| Citation Phsyical Description: | 6 p. |
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| Citation Publisher: | ACS Publications |
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| Citation Search Results Text: | Zinc isotopic composition of particulate matter generated during the combustion of coal and coal + tire-derived fuels; 2010; Article; Journal; Environmental Science and Technology; Borrok, D. M.; Gieré , R.; Ren, M.; Landa, E. R. |
| Citation Start Page: | 9219 |
| Citation Volume: | 44 |
| Citation Year: | 2010 |
| Type: | citation/reference |
| Text: | Zinc isotopic composition of particulate matter generated during the combustion of coal and coal + tire-derived fuels; 2010; Article; Journal; Environmental Science and Technology; Borrok, D. M.; Gieré , R.; Ren, M.; Landa, E. R. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| URL (DIGITAL OBJECT IDENTIFIER): | http://dx.doi.org/10.1021/es102439g |
| Date Other: | Fri, 1 Jan 2010 00:00 -0600 |
| Publisher: | ACS Publications |
