Table 4 Thermodynamic parameters of Cu(II) adsorption in BS and BS + HA systems.
From: Adsorption of copper(II) in biochar-humic acid–water system
Adsorbent | T (℃) | Ko (L g− 1) | ΔGθ (kJ mol− 1) | ΔHθ (kJ mol− 1) | ΔSθ (J mol− 1 K− 1) |
|---|---|---|---|---|---|
BS | 20 | 0.0250 | − 7.82 | 48.86 | 193.43 |
25 | 0.0296 | − 8.78 | |||
30 | 0.0567 | − 9.75 | |||
35 | 0.0735 | − 10.72 | |||
40 | 0.0783 | − 11.69 | |||
BS + HA | 20 | 1.2103 | − 17.18 | 27.90 | 153.84 |
25 | 1.3812 | − 17.95 | |||
30 | 1.4886 | − 18.71 | |||
35 | 2.2139 | − 19.48 | |||
40 | 2.3910 | − 20.25 |
