Table 2 Effect of the initial Cu2+ concentration in solution on the equilibrium adsorption capacity (qe)
From: Chitosan@TiO2 composites for the adsorption of copper(II) and antibacterial applications
Variable | B | 95% CI | p-value | |
|---|---|---|---|---|
Adding TiO2 | -2 | − 3.70 | − 0.62 | 0.006* |
Exchange with ammonia solution | 1 | −0.08 | 2.90 | 0.065 |
Crosslinking degree (3, 5, 7%) | −1 | − 1.80 | −0.91 | < 0.001** |
SBET | −0.08 | −0.15 | − 0.01 | 0.035 |
Initial Cu2+ concentration | 0.05 | 0.05 | 0.06 | < 0.001** |