Intraparticle diffusion model Boyd model
Adsorbent code R2 Kp (mg g-1 min-0.5 ) Intercept Intercept R2
MACS 0.563 2.089 130.320 0.034 0.89
MACL 0.590 2.373 104.373 1.261 0.925
ACS 0.872 0.656 27.039 0.468 0.964
ACL 0.520 0.640 30.142 0.788 0.735
DS 0.954 2.874 58.700 0.479 0.958
DL 0.975 3.764 36.848 0.167 0.982
Table 7: Intraparticle diffusion parameters for adsorption of Pb(II) by DS, DL, MACS and MACL at 200 ppm.