Evaluation of the adsorption behavior and divalent metal ions removal efficiency of ceramic point-of-use water filter materials

Environmental Systems Research

Table 6 Thermodynamic parameters of uptake of copper ions by CWF composition

CWFs	Ea (kJ/mol)	∆H° (kJ/mol)	∆S° (kJ/Kmol)	∆G°(kJ/mol)
CWFs	Ea (kJ/mol)	∆H° (kJ/mol)	∆S° (kJ/Kmol)	283 K	293 K	303 K	313 K	323 K	333 K	343 K
AC	+ 19.300	+ 48.210	+ 0.4330	− 74.251	− 78.578	− 82.905	− 87.233	− 91.559	− 95.887	− 100.214
BF with AC	+ 25.510	+ 114.220	+ 0.5740	− 48.339	− 54.083	− 59.828	− 65.572	− 71.316	− 77.059	− 82.804
BF	+ 25.240	+ 115.650	+ 0.5760	− 47.452	− 53.215	− 58.979	− 64.742	− 70.505	− 76.269	− 82.032
PFcs	+ 23.040	+ 101.550	+ 0.5320	− 49.089	− 54.412	− 59.735	− 65.058	− 70.381	− 75.704	− 81.027
CF	+ 22.150	+ 91.430	+ 0.5020	− 50.541	− 55.557	− 60.574	− 65.591	− 70.607	− 75.624	− 80.640