NickelRück – Recovery of nickel from process waters of phosphating

Initial situation:

  • Processes and waste water containing nickel are produced during the phosphating of steels.
  • Seizure of phosphating sludge after the addition of chemicals in waste water treatment.
  • Sewage must comply with discharge criteria.

Working topics:

  • Model development for metal extraction.
  • Investigation of innovative membrane materials.
  • Selection of the optimal membrane contactor and a suitable extraction agent.
  • Operational tests for the development of a process concept for nickel recovery.

Results:

  • Recovery of nickel from process waters of the phosphating of steels.
  • Minimization of fresh water requirements and compliance with waste water limits.
  • Development of a technology based on innovative membrane contactors.
back