Nilsen test

Nilsen DN, Hundley GL, Galvan GJ, and Wright JB. Field testing of a liquid-emulsion membrane system for copper recovery from mine solutions. In Bartsch RA, Way JD, eds. Chemical separations with liquid membranes, Washington, DC American Chemical Society, ACS symposium series 642, 1996 329-341. 

Tomic, O., Luciano, G., Nilsen, A., Hyldig, G., Lorensen, K. and Naes, T. (2010). Analysing sensory panel performance in a proficiency test using the PanelCheck software. European Food Research and Technology, 230, 497-511. 

In Chapter 23, Nilsen et al. describe the field testing of an emulsion liquid membrane system for copper recovery from mine solutions. The small, pilot plant-scale, continuous circuit for the recovery of copper from mine waste waters and low-grade leach solutions was field tested at a copper mine. Formulation of the emulsion membranes was optimized to provide emulsions with good stability during extraction, but which could be easily broken in an electrical coalescer under mild conditions. Typical results from the tests were >90 percent copper recovery, while maintaining the membrane swelling in the range of 4-8 percent. Cost evaluations indicate the potential for cost-effective recovery of copper from such solutions. 

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