Abstract
ABSTRACT 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, and having impurities of Co (0.2 g/L) and Fe (3.0 g/L), were electrodialysed at various current densities at several temperatures. A recovery of sulphuric acid of 0.5 kg/h/m2 was obtained at 300 A/m2 and 55°C, with a final concentration of 216 g/L of high purity H2SO4 with a SEC of 1.95 kWh/kg. Electrodialysis at 700 A/m2 resulted in an acid rate recovery of 1.5 kg/h/m2, with a final concentration of 328 g/L, and a SEC of 2.46 kWh/kg. The mass transport of metal ions and the effect of solution’s viscosity on acid recovery are discussed..
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
