Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10529961 | Analytica Chimica Acta | 2005 | 7 Pages |
Abstract
Coal fly ash leaching process for As and Se is studied. Environmental parameters such as pH, temperature, solid-liquid ratio, particle size and leaching time are taken into account in order to simulate As and Se leaching process for disposal coal fly ash. Analysis of reference materials was carried out by using of hydride generation coupled to atomic fluorescence spectrometry. Plackett-Burman experimental design is used to know the significative parameters, and Box-Behnken experimental design is used to refine the results obtained for these significative parameters. pH and temperature shown a hardly influence in leaching process. Furthermore, leaching time was also significative. According our results, it may be assumed that percentage of As and Se leaching in experimental conditions tested is relatively low for acidic fly ashes.
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
José R. Otero-Rey, MarÃa J. Mato-Fernández, Jorge Moreda-Piñeiro, Elia Alonso-RodrÃguez, Soledad Muniategui-Lorenzo, Purificación López-MahÃa, DarÃo Prada-RodrÃguez,