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Kinetic analysis of total Lead from spent Car battery by hydrochloric acid leaching | ||
Journal of the Iranian Chemical Research | ||
مقاله 9، دوره 4، شماره 4، اسفند 2011، صفحه 291-300 اصل مقاله (407.75 K) | ||
نویسندگان | ||
Alafara A. Baba* 1؛ Folahan A. Adekola1؛ Malay K. Ghosh2؛ Tryphena Young1؛ Kemi I. Olawale1؛ Abdul R. Sheik2 | ||
1Chemistry Department, University of Ilorin, P.M.B. 1515, Ilorin-240003, Nigeria. | ||
2Hydro & Electrometallurgy Department, Institute of Minerals and Materials Technology, Bhubaneswar- 751013, India. | ||
چکیده | ||
A study of the kinetic analysis of total lead from spent Car battery ash by hydrochloric acid leaching has been examined. The physico-chemical analysis of the ash powder was carried out by the Inductively Coupled Plasma-Mass Spectrometry (ICP-MS) and X–ray diffraction (XRD). The effects of the acid concentration, temperature and particle size on the rate of battery ash dissolution have been investigated. The dissolution rate increased with hydrochloric acid concentration and temperature with decreasing particle size. The kinetic study indicated that the dissolution of total lead could be represented by a shrinking core model with product layer diffusion control mechanism at lower temperatures and a surface chemical reaction controlled mechanism at higher temperatures. The activation energy, Ea and reaction order of 44.13 kJ/mol and 1.14 were obtained, respectively for the dissolution process under the following established conditions: solid/liquid ratio = 10 g/L, HCl concentration = 4M, temperature= 80 °C, Stirring speed = 300 rpm, Particle size = 0.050–0.063 mm for 120 minutes. | ||
کلیدواژهها | ||
Lead؛ kinetic analysis؛ spent battery؛ leaching؛ hydrochloric acid | ||
مراجع | ||
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