Microbial Adhesion and Biofilm Formation on Microfiltration Membranes: A Detailed Characterization Using Model Organisms with Increasing Complexity

Table 3

Two-way ANOVA results of the activated sludge experiment spiked with P. aeruginosa in the culture vessel. Bacterial cell density (log cells cm⁻² membrane) was selected as dependent variable and membrane (PSF, PVDF, and PS) and organism (P. aeruginosa and 16S) as predictor variables.

	𝐹	𝑃
Spiked activated sludge experiment—adhesion
Membrane	38.77	<0.001
Organism (P. aeruginosa and 16S)	39.26	<0.001
Membrane * organism	6.413	0.007
Spiked activated sludge experiment—biofilm
Membrane	31.67	<0.001
Organism (P. aeruginosa and 16S)	6.532	0.016
Membrane * organism	11.96	<0.001

Significant values are in bold. Bacterial cell density data were log transformed before analysis.