Akademik Veri Yönetim Sistemi
Aktaş S. (Yürütücü)
Yükseköğretim Kurumları Destekli Proje, 2012 - 2014
In this study, the recovery of ruthenium from
spent bath solutions via cementation reaction with zinc
powder was investigated. Studied parameters included the
quantity of zinc, reaction temperature, reaction time and
sodium chloride additions to understand their effects on the
reaction. Tests were performed in a temperature controlled
water-bath with temperatures between 20 and 70 C at
atmospheric pressure. Furthermore, in order to determine
activation energy of cementation reaction, several mathematical
kinetic models were used and the activation
energy, which was calculated from best fit, was found to be
12.48 kJ/mol. Addition of sodium chloride to the solution
greatly accelerated the cementation reaction, in that, more
the addition of sodium chloride, the better was the precipitation
efficiency. In the absence of sodium chloride at
25 C a percentage of ruthenium recovery was below 75%
whereas 1000 mg sodium chloride addition at 65 C
ensured a percentage of ruthenium recovery more than
95%. This corresponded to more than about 28% increase