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Table 3

Thermodynamic parameters for the adsorption of N and P on humic acids

AdsorbatesTemperature (K)qm(mg•g−1)KL(L•mol−1)R2ΔG°(kJ•mol−1)ΔH°(kJ•mol−1)ΔS°(kJ•mol−1•K−1)
288 16.835 80.317 0.992 −10.502 19.697 0.105 
298 17.483 121.387 0.998 −11.890 
308 19.231 158.020 0.996 −12.964 
318 21.231 173.094 0.995 −13.626 
288 10.917 50.615 0.988 −9.396 16.327 0.090 
298 11.377 73.670 0.991 −10.653 
308 12.063 89.056 0.988 −11.496 
318 12.771 96.519 0.983 −12.082 
AdsorbatesTemperature (K)qm(mg•g−1)KL(L•mol−1)R2ΔG°(kJ•mol−1)ΔH°(kJ•mol−1)ΔS°(kJ•mol−1•K−1)
288 16.835 80.317 0.992 −10.502 19.697 0.105 
298 17.483 121.387 0.998 −11.890 
308 19.231 158.020 0.996 −12.964 
318 21.231 173.094 0.995 −13.626 
288 10.917 50.615 0.988 −9.396 16.327 0.090 
298 11.377 73.670 0.991 −10.653 
308 12.063 89.056 0.988 −11.496 
318 12.771 96.519 0.983 −12.082 
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