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Título: | Hydrothermal treatment of bottom ash from the incineration of municipal solid waste: Retention of Cs(I), Cd(II), Pb(II) and Cr(III) |
Autor: | Peña Penilla, Raúl CSIC; Guerrero Bustos, Ana María ; Goñi Elizalde, Sara CSIC | Palabras clave: | Bottom ashIncineration of municipal solid waste Metals retention waste disposal Hydrothermal treatment |
Fecha de publicación: | 28-feb-2006 | Editor: | Elsevier BV | Citación: | Journal of Hazardous Materials 129(1-3): 151-157 (2006) | Resumen: | The retention of Cs+, Cd2+, Pb2+ and Cr3+ by the compounds formed as a result of the hydrothermal treatment of the bottom ash from the fluidized-bed incineration of municipal solid wastes is examined in this work. The amount of Cs+ retained and the distribution coefficient, Kd, were considerably lower than those for Cd2+, Pb2+ and Cr3+, independently of the type of compounds formed by the different bottom ash treatments. The high percentage of Cs+ retained (31%), with a Kd of 222 ml/g, occurred after treatment of the bottom ash in NaOH at 200°C, where zeolite-type A (Na6[AlSiO4]6·4H 2O) was the major compound, together with aluminum tobermorite (Ca5Si5Al(OH)O17·5H2O). In the case of Cd2+, Pb2+ and Cr3+, the amount retained was ∼99% under all of the conditions studied. | Versión del editor: | http://dx.doi.org/10.1016/j.jhazmat.2005.08.024 | URI: | http://hdl.handle.net/10261/215793 | DOI: | 10.1016/j.jhazmat.2005.08.024 | Identificadores: | doi: 10.1016/j.jhazmat.2005.08.024 issn: 0304-3894 |
Aparece en las colecciones: | (IETCC) Artículos |
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