Table 1 Water absorption characteristics and internal particle diffusion model parameters of straw after thermal pretreatment.

From: Research on the water absorption diffusion model and kinetics of pretreated straw

Samples

ηEMC/%

SE

λHRE/%

SE

K id,1/ (mg/g h 1/2 )

SE

I1/ (mg/g)

SE

K id,2/ (mg/g h 1/2 )

SE

I2/ (mg/g)

SE

Kid,3/ (mg/g h 1/2 )

SE

I3/ (mg/g)

SE

CS

16.23

0.58

  

4.09

0.70

9.61

0.99

0.24

0.11

15.24

0.30

0.15

0.30

15.93

3.02

CS-120

15.44

0.84

− 2.66

6.33

7.56

1.39

2.89

1.96

0.61

0.15

12.84

0.40

0.85

0.67

12.88

2.88

CS-140

14.82

2.24

− 11.49

13.90

7.70

1.35

1.96

1.90

0.63

0.22

12.13

0.59

1.67

1.75

10.38

1.63

CS-160

13.26

1.79

10.61

10.98

6.78

1.25

1.96

1.76

0.57

0.21

10.75

0.58

1.05

1.58

10.87

0.90

CS-180

8.73

0.92

43.55

5.85

4.07

0.83

2.33

1.17

0.22

0.07

7.75

0.19

0.34

0.49

8.06

0.57

CS-200

6.78

0.56

58.45

3.77

2.95

0.66

1.91

0.93

0.26

0.04

5.68

0.11

0.07

0.20

6.84

0.30

RS

11.75

0.43

  

2.61

0.20

5.96

0.29

1.52

0.13

7.54

0.26

0.14

0.05

10.70

0.27

RS-120

11.32

0.65

3.67

4.96

5.42

0.79

0.90

1.12

1.90

0.01

5.88

0.01

0.18

0.04

9.96

0.19

RS-140

10.96

1.17

6.73

11.19

4.29

0.82

4.29

1.16

0.83

0.12

9.16

0.23

0.02

0.10

11.45

0.48

RS-160

10.76

1.15

8.46

9.63

3.64

0.05

3.93

0.08

2.69

0.48

5.40

0.97

0.06

0.05

11.61

0.27

RS-180

9.15

1.56

22.09

15.24

2.06

0.12

3.84

0.17

1.31

0.14

4.93

0.29

0.24

0.02

7.58

0.10

RS-200

8.42

0.91

28.32

9.09

1.86

0.04

3.04

0.06

1.50

0.13

3.58

0.25

0.27

0.03

6.60

0.14

WS

12.12

0.38

  

2.52

0.47

7.35

0.66

0.53

0.06

10.13

0.13

0.17

0.03

11.06

0.13

WS-120

11.47

0.92

5.33

7.08

5.40

0.97

1.96

1.37

1.02

0.06

8.18

0.13

0.21

0.03

10.09

0.14

WS-140

11.23

1.18

7.31

8.68

3.14

0.38

5.47

0.53

1.59

0.08

7.63

0.16

0.17

0.05

11.22

0.23

WS-160

11.10

1.20

8.44

8.92

2.52

0.18

5.07

0.25

1.67

0.05

6.30

0.10

0.18

0.03

9.93

0.13

WS-180

10.79

0.68

10.98

3.21

3.07

0.05

4.56

0.07

2.52

0.22

5.39

0.43

0.20

0.03

10.92

0.13

WS-200

10.65

0.32

12.12

0.75

2.34

0.06

4.04

0.08

2.04

0.02

4.47

0.05

0.26

0.02

8.77

0.08

  1. SE standard error, CS corn straw, RS rice straw, WS wheat straw, CS-120 corn straw pretreated at 120 °C for 1 h, similarly hereinafter, kid internal particle diffusion rate constant, I thickness of the adsorbent boundary layer, subscript 1, 2, 3 three stages of internal particle diffusion.
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