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Table 1 Factors and levels assessed in single-factor tests

From: Optimization of the culture condition of Bacillus mucilaginous using Agaricus bisporus industrial wastewater by Plackett–Burman combined with Box–Behnken response surface method

Level Factor
Concentration (%) pH Loaded liquid (mL/250 mL) Inoculum (v:v, %) Culture temperature (°C) Shaking speed (rpm)
1 0.0625 5.0 15 0.5 20 50
2 0.125 5.5 30 1 24 100
3 0.25 6.0 60 2 28 150
4 0.5 6.5 90 4 32 200
5 1 7.0 120 8 36 250
6 2 7.5 150 16
7   8.0