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Table 4 Thermodynamic values for uptake of RY4 dye and Cd(II) ion by BMDA

From: Simultaneous removals of cadmium(II) ions and reactive yellow 4 dye from aqueous solution by bone meal-derived apatite: kinetics, equilibrium and thermodynamic evaluations

Temp (K)Cd(II) ionsRY4 dye
KdΔG (J mol−1)ΔH (kJ mol−1)ΔS (J mol−1 K−1)R2KdΔG (J mol−1)ΔH (kJ mol−1)ΔS (J mol−1 K−1)R2
3031.02− 49.2426.2886.570.9891.11− 251.7618.0260.160.999
3081.11− 255.921.20− 461.75
3131.39− 850.951.39− 853.99
3181.66− 1342.471.54− 1140.71