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Table 3 Kinetic parameters for the adsorption of Cu(II), Hg(II), Pb(II) and Cd(II) by DiGu-MC

From: Novel diaminoguanidine functionalized cellulose: synthesis, characterization, adsorption characteristics and application for ICP-AES determination of copper(II), mercury(II), lead(II) and cadmium(II) from aqueous solutions

Adsorbate

Cu2+

Hg2+

Pb2+

Cd2+

Pseudo 1st order

    

 qe(ads) (mg/g)

76.92

400

84.034

97.087

 K1 (min−1)

130.938

4581.6

111.176

971.75

 R2

0.9633

0.9886

0.9689

0.9549

Pseudo 2nd order

 Adsorbates

Cu2+

Hg2+

Pb2+

Cd2+

 qe(ads) (mg/g)

72.46

95.2

74.63

63.29

 k2 (g/mg.min)

1.41 × 10–4

1.25 × 10–5

2.297 × 10–4

3.284 × 10–5

 R2

0.9892

0.8517

0.994

0.7893

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BMC Chemistry

ISSN: 2661-801X

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