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Table 3 Comparison of the AAO–AHP pretreatment with others on lignocellulosic biomass

From: Bioprocessing of tea oil fruit hull with acetic acid organosolv pretreatment in combination with alkaline H2O2

Feedstock

Pretreatment process

Resulting solids

Source

Type

Pretreatment

Post-pretreatment

C

H

L

Content (%)

Catalyst

T (°C)

Time (h)

%

C. inophyllum shell

H2SO4 + NaOH

1%

At 90 °C for a fixed time

35

7

25

Cheng et al. [26]

E. ulmoides Oliver

SEP + AHP

–

–

213

1/3

1.5% H2O2, pH 11.5

77

4

5

Zhu et al. [15]

Lespedeza stalk

SEP + AHP

–

–

184

1/15

2% H2O2, pH 11.5

83

0

10

Su et al. [27]

EFB

AAO + AQA

–

7 (15)  % AAO (AQA) pretreatment at 180 °C for 15 min

65

22

21

Kim et al. [22]

Wheat straw

AAO

90

0.4% H2SO4

105

3

–

67

11

4

Pan and Sano [9]

Wheat straw

AAO

80

8.5% HNO3

120

0.3

–

96

3

1

Sun et al. [38]

Sugarcane straw

AAO

80

0.3% HCl

120

3

–

61

7

12

Saad et al. [23]

Sugarcane bagasse

AAO

90

0.1% H2SO4

105

3

–

64

17

13

Zhao et al. [10]

Beech

AAO

90

0.2% HCl

130

1

–

77

8

8

Vila et al. [43]

Corn stover

HCl + H2O2

–

7% HCl

120

2/3

3% H2O2 + 0.1% FeSO2

26

2

12

Li et al. [16]

Wheat straw

AAO + AHP

55%

30% FA

105

3

1% H2O2

70

15

2

Snelders et al. [18]

TOFH

AGO

70

–

180

3

 

22

26

27

Sun et al. [7]

TOFH

AAO

53

0.6% H2SO4

125

1.7

–

44

12

26

This study

TOFH

AAO + AHP

53

0.6% H2SO4

125

1.7

3% H2O2, pH 11.5

65

15

10

This study

  1. EFB empty fruit bunches, SEP steam explosion pretreatment, AQA aqueous ammonia, FA formic acid, C cellulose content, H hemicellulose content, L lignin content