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Table 6

Kinetic parameters of pseudo-first order and pseudo-second order models for Zn+2 sorption by sorbents

SorbentsPseudo-first order
Pseudo-second order
(min−1)(g·mg−1·min−1)(mg·g−1)
GAC (MC = 5, β-zeolite = 3, bentonite = 7) wt% 0.3101 0.9743 0.0163 7.1275 0.9948 
GAC (MC = 5, β-zeolite = 1, bentonite = 9) wt% 0.4292 0.9594 0.0147 7.1430 0.9923 
GAC (MC = 8, β-zeolite = 1, bentonite = 9) wt% 0.1307 0.9161 0.0141 7.0670 0.9954 
GAC (MC = 5, Cu-β-zeolite = 3, bentonite = 7) wt% 0.1331 0.9178 0.0206 7.7560 0.9987 
GAC (MC = 5, Cu-β-zeolite = 1, bentonite = 9) wt% 0.1578 0.9705 0.0192 7.2310 0.9903 
GAC (MC = 8, Cu-β-zeolite = 1, bentonite = 9) wt% 0.4015 0.9674 0.0170 7.0771 0.9991 
SorbentsPseudo-first order
Pseudo-second order
(min−1)(g·mg−1·min−1)(mg·g−1)
GAC (MC = 5, β-zeolite = 3, bentonite = 7) wt% 0.3101 0.9743 0.0163 7.1275 0.9948 
GAC (MC = 5, β-zeolite = 1, bentonite = 9) wt% 0.4292 0.9594 0.0147 7.1430 0.9923 
GAC (MC = 8, β-zeolite = 1, bentonite = 9) wt% 0.1307 0.9161 0.0141 7.0670 0.9954 
GAC (MC = 5, Cu-β-zeolite = 3, bentonite = 7) wt% 0.1331 0.9178 0.0206 7.7560 0.9987 
GAC (MC = 5, Cu-β-zeolite = 1, bentonite = 9) wt% 0.1578 0.9705 0.0192 7.2310 0.9903 
GAC (MC = 8, Cu-β-zeolite = 1, bentonite = 9) wt% 0.4015 0.9674 0.0170 7.0771 0.9991 
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