1
st
stage
2
nd
stage
3
rd
stage
k
i
1
4.105
k
i
2
7.2349
k
i
3
0.95
R
2
1
0.98
R
2
2
0.9943
R
2
3
0.9207
Table 3:
Intraparticle diffusion constants and R
2
values at <0.149 mm particles.