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Table 3 Multiple regression analysis between zinc leaching efficiency and mineral composition on sampling time

From: Responses of zinc recovery to temperature and mineral composition during sphalerite bioleaching process

Time Formula R2 p
Day 6 y = 2.800 + 0.816x1 + 721.911x2 − 741.258x3 0.443 0.006
Day 12 0.147 > 0.1
Day 21 0.038 > 0.1
Day 30 y = 62.266 + 0.479x1 + 462.157x2 − 470.054x3 0.512 0.002
  1. Zinc leaching efficiency was indicated by “y” (unit: %), temperature was indicated by “x1” (unit: °C) and mineral composition was indicated by “x2” (DCA1) and “x3” (DCA2)