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Table 2 Parameters of pseudo first and second order kinetic models for nutrients adsorption from single and mixed solute solution

From: Chitosan impregnation of coconut husk biochar pellets improves their nutrient removal from eutrophic surface water

Model

Pseudo first order

Pseudo second order

Parameter

qe (mg g−1)

k1 (h−1)

R2

qe (mg g− 1)

k2 (g mg− 1 h− 1)

R2

NH4+

Single

CH

0.24

0.35

0.958

0.27

1.9

0.988

CHC

0.09

0.71

0.964

0.09

19

0.944

CHEG

0.40

0.12

0.980

0.48

0.26

0.974

Mixed

CH

1.02

0.020

0.949

1.78

0.01

0.947

CHC

0.69

0.12

0.963

0.84

0.16

0.958

CHEG

0.64

0.49

0.984

0.66

2.2

0.987

NO3−

Single

CH

0.12

0.14

0.830

0.14

1.1

0.830

CHC

0.27

1.06

0.965

0.28

8.9

0.966

CHEG

0.24

0.07

0.900

0.33

0.16

0.866

Mixed

CH

0.22

0.16

0.914

0.27

0.59

0.904

CHC

0.63

0.08

0.990

0.80

0.10

0.992

CHEG

0.43

0.33

0.942

0.47

0.94

0.916

PO43−

Mixed

CH

0.62

0.23

0.928

0.67

0.60

0.930

CHC

0.45

0.09

0.966

0.66

0.080

0.989

CHEG

0.48

0.10

0.924

0.59

0.18

0.953

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Sustainable Environment Research

ISSN: 2468-2039

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