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Tratamiento de electrocoagulación como alternativa para la recuperación de zinc y eliminación de cianuros en aguas de enjuague usadas en el proceso de cincado

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Water pollution is one growing global problem. There are various methods for treatment and reduction of contaminants. However, conventional treatments are not effective for removal of metals and inorganic such as cyanides, particles present in the wastewater from electroplating, among others. This work investigated the electrocoagulation as an alternative to reduce the presence of zinc and cyanide in water from baths of cyanide alkaline zinc rinses. There are experiments with electrodes of graphite - aluminium and aluminium - iron, working as constant parameters experimental time and intensity of current. Both proposed models were effective in the reduction of parts per million of these pollutants and the remarkable decrease of other significant parameters in the analysis of wastewater. Both proposed models achieve the objective of reducing pollutants, however, on some parameters evaluated, the pair of electrodes aluminum - iron, it has greater efficiency on torque graphite - aluminium.

Author(s): García Valles David Ezequiel
Series: 2016
Year: 0

Language: Spanish
Pages: 88

CONTENIDO
CAPITULO I. EL AGUA, GENERALIDADES Y TRATAMIENTOS
1. El Agua
1.1. Aguas Residuales
1.2. Tratamiento De Aguas Residuales
1.3. Aguas Residuales Industriales
1.4. Tratamientos Convencionales Y Tratamientos Alternativos Para Aguas Residuales Industriales.
1.4.1. Eliminación De Materia En Suspensión
1.4.2. Eliminación De Materia Disuelta
1.4.3. Tratamientos Biológicos
Capitulo II. ELECTROQUIMICA Y ELECTROCOAGULACIÓN
2.1. Electroquímica
2.1.1. Conceptos Básicos En Electroquímica
2.1.2. Electroquímica Y Las Leyes De Faraday
2.1.3. Electroquímica Y Medio Ambiente
2.1.4. Tratamientos De Cianuro Vía Electroquímica
2.2. Galvanoplastia Y Recubrimientos Electroquímicos
2.2.1. Proceso Electrolítico
2.3. Cincado
2.3.1. Galvanizado De Cinc Alcalino Cianurado
2.3.2. Problemas Ambientales En La Industria De La Galvanoplastia
2.4. Electrocoagulación
2.4.1. Electrocoagulación En El Tratamiento De Aguas Residuales De Galvanoplastia.
CAPITULO III. MATERIALES Y METODOS
3.1. Descripción Del Equipo
3.2. Proceso De Electrocoagulación
3.3. Descripción De Técnicas Analíticas Empleadas
CAPITULO IV. RESULTADOS
1. Comportamiento de pH
2. Conductividad Eléctrica
3. Alcalinidad total
4. Cloruros
5. Dureza total
6. Zinc
7. Cianuro total
8. Depósito De Zinc
9. Pseudocinéticas para el proceso de eliminación de cianuro y recuperación de zinc
CONCLUSIONES
PESPECTIVAS
REFERENCIAS BIBLIOGRAFICAS