Table 4 The release of pCA during pretreatment, the recovery of the solid residue and the content of each component in solid residues

59.48 ± 0.54

94.07 ± 1.34

56.15 ± 0.72

23.90 ± 0.27

2.95 ± 0.14

5.40 ± 0.16

75.85 ± 0.71

97.24 ± 2.11

50.82 ± 0.17

20.21 ± 0.93

2.45 ± 0.07

10.81 ± 0.09

68.52 ± 0.59

95.05 ± 1.57

51.98 ± 1.04

21.96 ± 0.12

2.73 ± 0.20

6.32 ± 0.21

55.74 ± 1.16

86.97 ± 0.79

54.10 ± 0.35

17.26 ± 1.12

2.64 ± 0.23

7.49 ± 1.06

73.42 ± 0.78

89.72 ± 1.96

48.63 ± 1.86

18.14 ± 0.89

2.12 ± 0.11

13.39 ± 0.95

64.34 ± 0.94

87.69 ± 1.63

51.60 ± 1.03

17.21 ± 0.67

2.34 ± 0.18

9.67 ± 0.64