The design, installation and optimization of an Eductor agitation system for a 6000l (approx. 1300galls) nickel tank is described and its performance measured against the formerly used air agitation system. A total of 20 eductors were installed, 5 eductors per side; eductors on two opposite sides were inclined at 30° from the horizontal and the other two sides at 60°. Agitation Enhancement Factors of 7-10x were measured giving 36% deposition rate improvement and shorter process times (71% improvement). Reduction in nickel thickness variability (ie. edge build-up) of up to 92% was measured. Metal/acid fume was virtually reduced to zero emission.
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