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Table 3 Full factorial design with [TS] as A and [CD] as B factors, with three levels for both parameters

From: Efficiency of integrated electrooxidation and anaerobic digestion of waste activated sludge

[TS] (%) Current density (mA/cm2)
[CD]1 (14.3) [CD]2 (21.4) [CD]3 (28.6)
[TS]1 (1.0) [TS]1, [CD]1 [TS]1, [CD]2 [TS]1, [CD]3
[TS]2 (2.0) [TS]2, [CD]1 [TS]2, [CD]2 [TS]2, [CD]3
[TS]3 (3.0) [TS]3, [CD]1 [TS]3, [CD]2 [TS]3, [CD]3