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Table 1 Rate constants of the pseudo-first-order and pseudo-second-order kinetics models for the adsorption of Cd2+ on CH–CDs

From: Rational synthesis, characterization, and application of environmentally friendly (polymer–carbon dot) hybrid composite film for fast and efficient UV-assisted Cd2+ removal from water

Adsorbent

Pseudo-second order

Langmuir constants

Freundlich constants

Cd2+

qe (mg g−1)

k2 (g(mg min)−1)

R2

KL (L mg−1)

qm (mg g−1)

R2

Kf (mg g−1)(mg L−1)1/n

n

R2

 

10.23

1.13

0.9999

2.32

112.35

0.999

0.58

1.02

0.975