International Journal of Analytical Chemistry / 2020 / Article / Tab 3

Research Article

Removal of Fluorescein Dye from Aqueous Solutions Using Natural and Chemically Treated Pine Sawdust

Table 3

Parameters of adsorption kinetic model (PFO, PSO, LFD, and IPD) for the FD adsorption by NPS and SPS.

Kinetic modelsAdsorbent
A (NPS)B (SPS)

qe,, exp mg g−10.2220.2323
Pseudo-first order
 qe, cal mg g−10.2160.1391
 K1, g/mg.min0.0510.0373
 R20.9600.986
Pseudo-second order
 qe, cal mg g−10.2360.2463
 K2, g/mg.min0.5320.4777
 h, mg g−1.min0.029530.02898
 t½7.97788.4998
 R20.9991
Liquid film diffusion
 Klfd, 1/min0.03740.0512
 C, mg g−10.51290.0272
 R20.9860.960
Intraparticle diffusion
Step 1
  Kipd, mg g−1.min1/20.0100.095
  C, mg g−10.1240.139
  R20.9680.985
Step 2
  Kipd, mg g−1.min1/20.00040.0016
  C, mg g−10.2170.213
  R20.9080.860

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