Thermodynamic parameters for the adsorption of Pb2+ onto the Fe3O4@DHAQ_GO nanocomposite (adsorbent dosage 55 mg L−1, contact time 60 min, pH 7).
T | K L (L g−1) | q m (mg g−1) | ΔG0 (kJ mol−1) | ΔS0 (J mol−1 K) | ΔH0 (kJ mol−1) |
---|---|---|---|---|---|
278 | 0.388 | 200.7 | −13.79 | 135.97 | 24.07 |
293 | 0.598 | 239.4 | −15.58 | — | — |
308 | 1.178 | 225.3 | −18.12 | — | — |
323 | 1.546 | 243.1 | −19.73 | — | — |