Sorption of Uranium(VI) and Thorium(IV) by Jordanian Bentonite

Table 4

Comparison of sorption rate constants, experimental, and calculated 𝑞_𝑒 values for the pseudo- first- and second-order reaction kinetics of removal for uranium (VI) by bentonite.

First order					Second order
pH	𝑅^2	𝑘1	ln𝑞𝑒	𝑞𝑒	𝑅^2	𝑞𝑒	𝑘2	𝑞 exp
1	0.938	0.0024	2.5637	12.984	0.996	23.810	6.976𝑒−4	23.655
2	0.948	0.0019	2.2241	9.245	0.999	29.674	0.134𝑒−4	30.076
3	0.968	0.0019	2.5257	12.500	0.999	42.373	9.255𝑒−4	42.891