Composition and element solubility of magnetic and non-magnetic fly ash fractions
Magnetic and non-magnetic fractions of coal fly ashes from SE US electric power plants were characterized with special emphasis on the potential environmental consequences of their terrestrial disposal. Quartz and mullite were the crystalline minerals dominating the non-magnetic fractions. Magnetic...
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| Language: | English English |
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Elsevier
2003
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| Online Access: | http://psasir.upm.edu.my/id/eprint/40079/ http://psasir.upm.edu.my/id/eprint/40079/1/Composition%20and%20element%20solubility%20of%20magnetic%20and%20non-magnetic%20fly%20ash%20fractions.pdf http://psasir.upm.edu.my/id/eprint/40079/7/1-s2.0-S0269749102003767-main.pdf |
| _version_ | 1848849324165824512 |
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| author | Kukier, Urszula Ishak, Che Fauziah Sumner, Malcolm E. Miller, William P. |
| author_facet | Kukier, Urszula Ishak, Che Fauziah Sumner, Malcolm E. Miller, William P. |
| author_sort | Kukier, Urszula |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | Magnetic and non-magnetic fractions of coal fly ashes from SE US electric power plants were characterized with special emphasis on the potential environmental consequences of their terrestrial disposal. Quartz and mullite were the crystalline minerals dominating the non-magnetic fractions. Magnetic fractions contained magnetite, hematite, and, to a lesser extent, quartz and mullite. Chemical analyses revealed that magnetic fractions had about 10 times higher concentrations of Fe, and 2–4 times higher concentrations of Co, Ni, and Mn. Non-magnetic fractions were enriched in K, Al and Ca. Iron content within fly ash particles was negatively correlated with elements associated with aluminosilicate matrix (Si, Al, K, Na). Solubility of most elements was higher in the non-magnetic than in the magnetic fractions of alkaline fly ashes at comparable pH. Calcium was associated with the non-magnetic fraction of the alkaline fly ashes which resulted in a higher pH buffering capacity of this fraction. |
| first_indexed | 2025-11-15T09:48:35Z |
| format | Article |
| id | upm-40079 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English English |
| last_indexed | 2025-11-15T09:48:35Z |
| publishDate | 2003 |
| publisher | Elsevier |
| recordtype | eprints |
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| spelling | upm-400792024-07-19T08:20:13Z http://psasir.upm.edu.my/id/eprint/40079/ Composition and element solubility of magnetic and non-magnetic fly ash fractions Kukier, Urszula Ishak, Che Fauziah Sumner, Malcolm E. Miller, William P. Magnetic and non-magnetic fractions of coal fly ashes from SE US electric power plants were characterized with special emphasis on the potential environmental consequences of their terrestrial disposal. Quartz and mullite were the crystalline minerals dominating the non-magnetic fractions. Magnetic fractions contained magnetite, hematite, and, to a lesser extent, quartz and mullite. Chemical analyses revealed that magnetic fractions had about 10 times higher concentrations of Fe, and 2–4 times higher concentrations of Co, Ni, and Mn. Non-magnetic fractions were enriched in K, Al and Ca. Iron content within fly ash particles was negatively correlated with elements associated with aluminosilicate matrix (Si, Al, K, Na). Solubility of most elements was higher in the non-magnetic than in the magnetic fractions of alkaline fly ashes at comparable pH. Calcium was associated with the non-magnetic fraction of the alkaline fly ashes which resulted in a higher pH buffering capacity of this fraction. Elsevier 2003-05 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/40079/1/Composition%20and%20element%20solubility%20of%20magnetic%20and%20non-magnetic%20fly%20ash%20fractions.pdf text en http://psasir.upm.edu.my/id/eprint/40079/7/1-s2.0-S0269749102003767-main.pdf Kukier, Urszula and Ishak, Che Fauziah and Sumner, Malcolm E. and Miller, William P. (2003) Composition and element solubility of magnetic and non-magnetic fly ash fractions. Environmental Pollution, 123 (2). pp. 255-266. ISSN 0269-7491; ESSN: 1873-6424 http://www.sciencedirect.com/science/article/pii/S0269749102003767 10.1016/S0269-7491(02)00376-7 |
| spellingShingle | Kukier, Urszula Ishak, Che Fauziah Sumner, Malcolm E. Miller, William P. Composition and element solubility of magnetic and non-magnetic fly ash fractions |
| title | Composition and element solubility of magnetic and non-magnetic fly ash fractions |
| title_full | Composition and element solubility of magnetic and non-magnetic fly ash fractions |
| title_fullStr | Composition and element solubility of magnetic and non-magnetic fly ash fractions |
| title_full_unstemmed | Composition and element solubility of magnetic and non-magnetic fly ash fractions |
| title_short | Composition and element solubility of magnetic and non-magnetic fly ash fractions |
| title_sort | composition and element solubility of magnetic and non-magnetic fly ash fractions |
| url | http://psasir.upm.edu.my/id/eprint/40079/ http://psasir.upm.edu.my/id/eprint/40079/ http://psasir.upm.edu.my/id/eprint/40079/ http://psasir.upm.edu.my/id/eprint/40079/1/Composition%20and%20element%20solubility%20of%20magnetic%20and%20non-magnetic%20fly%20ash%20fractions.pdf http://psasir.upm.edu.my/id/eprint/40079/7/1-s2.0-S0269749102003767-main.pdf |