Order
Equation
K, min
-1
R
2
First order
log (q
e
-q
t
)=–0.019698 t–0.073348
0.04513
0.9507
Second order
t/q
t
=0.5935 t + 1.85514
0.18987
0.9897
Table 2:
Rate Equations and coefficients for biosorption of lead on Casuarina leaf powder.