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Table 1 Comparison of selected pretreatments that maximize enzymatic digestibility of agave tequilana bagasse (AGB) and municipal solid waste (MSW)—paper mix

From: Ternary ionic liquid–water pretreatment systems of an agave bagasse and municipal solid waste blend

Pretreatment

Feedstock

T (°C)

t (min)

Chemical loading (g/g dry biomass)

Removal

Solid loading at saccharification

Sugar conversion at 72 h

Reference

% Xylan

% Lignin

% Glucan

% Xylan

AFEX

AGB

102

30

2

0

0

5 g glucan/L

81

82

[48]

MSW

65

15

2.8

0

0

1% glucan

34

47

[49]

Alkaline*

AGB

120a and 24b

60a and 1440b

0.3a and 0.3b

6

83

1:5 solid/liquid

98

48

[50]

Dilute acid

AGB

147

15

0.18

100

−67

8.2 (%, w/w)

68+

[51]

MSW

140

40

0.1

42

79

1% glucan

80

ND

[52]

Hydrothermal

AGB

180

30

80

2

5 g glucan/L

80

83

[48]

Ionic liquid [C2C1Im][OAc]

AGB

120

180

9

7

25

5 g glucan/L

95

92

[48]

AGB

120

180

9

4

25

5 g glucan/L

95

87

This study—system A

AGB

120

180

9

18

27

5 g glucan/L

98

80

This study—system J

MSW

140

180

9

0

6

10% biomass

93

73

[9]

MSW

120

180

9

0

0

5 g glucan/L

97

94

This study system A

 

MSW

120

180

9

0

0

5 g glucan/L

93

75

This study system D

Ionic liquid [C4C1Im][Cl]

AGB

120

180

9

10

12

5 g glucan/L

82+

[53]

  1. AFEX ammonia fiber expansion, ND non determined
  2. * Batch process using consecutive pretreatments with a NaOH and b H2O2
  3. +Total sugar yield