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- W4308453371 abstract "In the present study, the problem of the sulfuric acid recycling from spent copper plating solution was solved using a hybrid membrane technology, including diffusion dialysis and electrodialysis. A real solution from the production of copper-coated steel wire, containing 1.45 mol/L of sulfuric acid, 0.67 mol/L of ferrous sulfate and 0.176 mol/L of copper sulfate was processed. Diffusion dialysis with anion-exchange membranes was used to separate sulfuric acid and salts of heavy metals. Then purified dilute sulfuric acid was concentrated by electrodialysis. Energy consumption for sulfuric acid electrodialysis concentration at a current density of 400 A/m2 was 162 W·h/mol with current efficiency 16 %. After processing according to the hybrid membrane scheme, the solution contained 1.13 mol/L sulfuric acid, 0.077 mol/L ferrous sulfate and 0.022 mol/L copper sulfate. The resulting acid solution with a small amount of ferrous sulfate and copper sulfate met the established requirements for a copper plating bath solution and can be reused in production." @default.
- W4308453371 created "2022-11-12" @default.
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- W4308453371 date "2022-11-07" @default.
- W4308453371 modified "2023-09-29" @default.
- W4308453371 title "Hybrid Membrane Technology for Acids Recovery from Wastewater of the Coated Steel Wire Production: A Pilot Scale Study" @default.
- W4308453371 doi "https://doi.org/10.20944/preprints202211.0108.v1" @default.
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