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Table 2 GC analysis of pyrolytic aqueous condensate (PAC) treated with different combinations of detoxification methods

From: Detoxification of a pyrolytic aqueous condensate from wheat straw for utilization as substrate in Aspergillus oryzae DSM 1863 cultivations

Combinationa

c (PAC compound) [g/L]

Acetate

Acetol

2-Cyclopenten-1-one

Furfural

Guaiacol

Phenol

Untreated

35.17 ± 0.13

33.58 ± 1.86

3.42 ± 0.13

2.63 ± 0.15

1.15 ± 0.04

0.58 ± 0.01

Growth limitb

> 70

15

0.0625

0.3

1

0.7

RE

36.06

6.89

0.09

0.21

0.16

0.06

RE + OL

39.97

3.95

0.08

0.00

0.16

0.06

RE + OL + AC

39.02

2.96

0.00

0.00

0.14

0.00

RE

35.17

6.34

0.09

0.20

0.15

0.06

RE + AC

35.40

5.06

0.00

0.00

0.14

0.00

RE + AC + OL

40.07

3.54

0.00

0.00

0.00

0.00

OL

42.56

6.61

0.44

0.12

0.48

0.41

OL + RE

42.83

2.76

0.11

0.23

0.22

0.09

OL + RE + AC

43.49

2.10

0.07

0.15

0.14

0.11

OL

39.92

6.01

0.45

0.12

0.48

0.41

OL + AC

42.40

5.79

0.30

0.04

0.21

0.06

OL + AC + RE

42.41

1.96

0.08

0.00

0.15

0.00

AC

35.81

21.64

1.62

0.40

0.16

0.00

AC + RE

34.59

5.69

0.24

0.10

0.14

0.00

AC + RE + OL

44.43

3.58

0.16

0.00

0.13

0.00

AC

35.43

21.93

1.64

0.40

0.14

0.00

AC + OL

41.84

14.15

0.61

0.05

0.14

0.00

AC + OL + RE

41.22

6.18

0.12

0.00

0.00

0.00

  1. aAll possible combinations of rotary evaporation (RE); overliming (OL), and activated carbon treatments (AC) were performed
  2. bDetermined by Dörsam et al. [19] as % (w/v). The concentration was converted into g/L assuming the density of water [2]. The only exception was acetate, for which, according to the results of Kövilein et al. [42], no growth limit was determined so far
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Biotechnology for Biofuels and Bioproducts

ISSN: 2731-3654

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