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Table 7

Isotherm constants for GAC (MC = 5, Cu-β-zeolite = 3, bentonite = 7) wt% as best sorbent

IsothermsHeavy metal ionsConstants
(l·mg−1)(mg·g−1)
Langmuir equation Cd 0.5127 15.1017 0.9918 
Pb 0.7915 15.4231 0.9943 
Zn 0.7670 15.3712 0.9936 
   (l·mg−1)  
Freundlich equation Cd 0.1752 29.2708 0.9354 
Pb 0.1707 27.1200 0.9417 
Zn 0.1815 30.8929 0.9089 
IsothermsHeavy metal ionsConstants
(l·mg−1)(mg·g−1)
Langmuir equation Cd 0.5127 15.1017 0.9918 
Pb 0.7915 15.4231 0.9943 
Zn 0.7670 15.3712 0.9936 
   (l·mg−1)  
Freundlich equation Cd 0.1752 29.2708 0.9354 
Pb 0.1707 27.1200 0.9417 
Zn 0.1815 30.8929 0.9089 
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