DESCOMPOSITION KINETICS OF ARGENTIAN LEAD JAROSITE IN NaOH MEDIA
Hernández Ávila, Juan
2011
FRANCISCO PATIÑO, IVAN A. REYES, ISAURO RIVERA, MARTIN REYES, JUAN HERNANDEZ AND MIGUEL PEREZ, DESCOMPOSITION KINETICS OF ARGENTIAN LEAD JAROSITE IN NaOH MEDIA, JOURNAL OF THE MEXICAN CHEMICAL SOCIETY, ISSN: 1870-249X, PP 197-202, VOL 55(4). 2011, Index. 440-442, FACTOR DE IMPACTO 0.6
Abstract
Argentian lead jarosite was obtained with the maximal dissolution technique, and it was thoroughly characterized. In this work we studied the decomposition kinetics and cyanidation of the argentian lead jarosite in NaOH media. The reaction order and activation energy for the alkaline decomposition are of n = 0.7 and Ea = 101.85 KJmol?1, and of n = 0 and Ea = 109.54 KJmol?1 for the cyanidation process. The global cyanidation process consists of two stages: decomposition reaction followed by the instant cyanidation of the decomposition products.
