Juan Patricio Ibáñez, Ana Vásquez
As part of a route for the valorisation of liquid effluents from copper metallurgical plants, the recovery and generation of sulphuric acid using electrodialysis from synthetic sulphate-rich solutions, similar to those of copper electrometallurgy, was investigated. Sulphate-bearing solution, having sulphuric acid ranging from 45 to 180 g/L and copper from 0 to 40 g/L, along with impurities of Co (0.2 g/L) and Fe (3.0 g/L), were electrodialysed at various current densities and temperatures. A recovery of sulphuric acid of 0.5 kg/h/m² was obtained at 300 A/m² and 55°C, yielding a final concentration of 216 g/L of high purity H2SO4 with an energy consumption of 1.95 kWh/kg. Electrodialysis at 700 A/m² resulted in an acid recovery rate of 1.5 kg/h/m², with a final concentration of 328 g/L, and a specific energy consumption of 2.46 kWh/kg. The mass transport of metal ions and the effect of solution viscosity on acid recovery are discussed.
@article{fc1acfac-bbd5-468c-9ff8-051699843451,
title={Valorisation of sulphate rich effluents by electrodialysis},
author={Juan Patricio Ibáñez and Ana Vásquez},
year={2023},
language={es}
}TY - JOUR TI - Valorisation of sulphate rich effluents by electrodialysis AU - Juan Patricio Ibáñez AU - Ana Vásquez PY - 2023 LA - es ER -
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