Table 5 Analysis of variance (ANOVA) and regression statistics for the Plackett–Burman experimental data for TAM biomass-mediated Cr6+ elimination.
Source | Symbol | df | Coefficient | t-Stat | P-value | ||
|---|---|---|---|---|---|---|---|
94.09 | 4.00 | 0.013 | |||||
Contact time (min.) | A | 1 | − 5.34 | − 0.08 | 0.04 | ||
Cr concentration (mg L−1) | B | 1 | 3.26 | 0.27 | 0.80 | ||
pH | C | 1 | − 0.84 | − 0.08 | 0.94 | ||
Temperature (°C) | D | 1 | 3.52 | − 0.90 | 0.04 | ||
Biomass dosage (g) | E | 1 | − 0.19 | − 0.27 | 0.80 | ||
Static-Agitation | F | 1 | 1.66 | 0.85 | 0.04 | ||
R-Sq(adj) | 0.885 | ||||||
R2 | 0.940 | ||||||
df | SS | MS | F | Significance F | Residual error | Total | |
|---|---|---|---|---|---|---|---|
Regression | 6 | 67.425 | 79.22 | 39.45 | 0.935 | 5 | 11 |
