Table 2 The estimated constants of the models applied to the actual adsorption and desorption data of VDBD at different temperatures.

From: Mathematical modeling of sorption isotherms and the thermodynamic properties of vacuum-dried and freeze-dried Barhi dates

Parameter

Adsorption

Desorption

25 °C

35 °C

45 °C

25 °C

35 °C

45 °C

Peleg model

C1

0.29

0.46

0.32

0.06

0.11

0.74

C2

3.82

3.76

3.19

− 0.43

− 0.13

3.23

C3

0.29

0.46

0.32

0.32

1.13

0.08

C4

3.82

3.76

3.19

1.22

3.67

0.15

GAB model

Xm

11.03

18.94

17.24

0.18

0.13

0.11

C

0.00

0.00

0.01

18.76

15.76

3.68

K

0.82

0.78

0.72

0.87

0.96

0.97

BET model

Xm

0.07

0.08

0.06

0.05

0.12

0.09

C

0.51

1.14

1.78

-12.31

46.65

5.66

Halsey model

A

0.08

0.08

0.05

0.01

0.12

0.09

B

0.71

0.91

1.00

1.97

1.18

1.08

Oswin model

A

0.05

0.09

0.08

0.22

0.24

0.16

B

1.15

0.93

0.84

0.22

0.65

0.72

Smith model

A

− 0.05

-0.10

-0.07

0.14

0.04

0.00

B

0.17

0.30

0.23

0.09

0.32

0.26

Adam and shove model

A

0.03

0.02

0.05

0.21

0.14

1.00

B

− 0.29

− 0.19

− 0.51

− 0.61

0.06

− 0.95

C

0.45

0.04

1.16

1.72

− 0.75

0.89

D

0.30

0.99

− 0.11

− 1.01

1.76

− 0.83

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