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

Table 3

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

First order					Second order
pH	𝑅^2	𝑘1	ln𝑞𝑒	𝑞𝑒	𝑅^2	𝑞𝑒	𝑘2	𝑞 exp
1	0.957	0.0027	3.3221	27.718	0.995	35.088	1.977𝑒−4	32.964
2	0.961	0.0029	3.4685	32.089	0.994	43.290	2.001𝑒−4	41.000
3	0.937	0.0024	3.4405	31.203	0.991	44.248	2.176𝑒−4	43.679