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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)
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