Producción Científica Profesorado

Thermodynamic Study of Leached Metals (Cu, Zn and Ni) from Waste Printed Circuits by Electrochemical Method



Veloz Rodríguez, María Aurora

2014

J.F. Montiel Hernández, M.I. Reyes Valderrama, I. Rivera Landero, C.H. Rios-Reyes, M.A. Veloz Rodríguez, F. Patiño Cardona, V.E. Reyes-Cruz,(2014), "Thermodynamic Study of Leached Metals (Cu, Zn and Ni) from Waste Printed Circuits by Electrochemical Method", Advanced Materials Research, Vol. 976, pp. 86-90, 2014


Abstract


A thermodynamic study (Pourbaix type diagrams, using the software Hydra/Medusa) of acid leaching solutions to obtain the electrochemical recovery of Ni, Cu and Zn present in printed circuit boards is reported. Solutions were characterized by atomic absorption spectroscopy at room temperature. The metals were leached in a 0.9237 M H2SO4 solution (pH = 1.56) at temperatures of 313, 323, 333 and 343 K. From this data, the reduction potentials were determined for each metal, finding the values of -0.0024, -1.1274 and-0.5892 V vs calomel for Cu, Ni and Zn, respectively. Displacement in the reduction potential with the increase of the metal concentration in the leaching solution was observed.



Producto de Investigación




Artículos relacionados

Efecto del pH en la corrosión de acero al carbono en aguas amargas

Recuperación de plata proveniente de placas radiográficas utilizando un reactor electroquímico tipo ...

Caracterización electroquímica de los jales históricos del distrito minero de Zimapán

Corrosion behavior of carbon steel in sour waste water varying pH

Purificación del Caolín por Electrolisis

Caracterización electroquímica de suelos contaminados por residuos mineros (jales).

Corrosión de acero al carbono en presencia de inhibidores de corrosión e hidrocarburo

Electrorecuperación de metales del grupo del platino de convertidores catalíticos automotrices

Evaluación de la resistencia a la corrosión de aceros Pulvimetalurgicos inoxidables austéniticos sin...

Pyrite?Arsenopyrite Galvanic Interaction and Electrochemical Reactivity