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Electronic Journal of Biotechnology ISSN: 0717-3458
  © 2008 by Universidad Católica de Valparaíso -- Chile
Vol. 12 No. 1, Issue of January 15, 2009
 

Table 3. Chemical composition of liquid phase in starch stillage [g/L] (except pH [-], density [oBlg], COD and BOD5 [g O2/l]).


Parameter

Type of stillage

Maize (Dahab and Young, 1981)

Maize (Cibis, 2004)

Wheat (Weiland and Thomsen, 1990)

Wheat (Nagano et al. 1992)

Wheat (Hutnan et al. 2003)

Wheat (Hutnan et al. 2003)

Barley (Kitamura et al. 1996)

Barley (10%)

and sweet potato (90%) (Shin et al. 1992)

Rye (Cibis, 2004)

Grain (Laubscher et al. 2001)

Awamori (rice)

(Tang et al. 2007)

Jowar (shorgum) (Khardenavis et al. 2007)

Rice (Khardenavis et al. 2007)

Starch waste feedstocks (Cibis, 2004)

Potato (Cibis et al. 2002)

Potato (Cibis et al. 2002)

Potato (Cibis et al. 2006)

Potato (Weiland and Thomsen, 1990)

Sweet potato (Nagano et al. 1992)

pH

-

3.70

3.8-4.0

4.6

3.35

3.7

3.7-4.1

5.1

3.94

4.0-4.5

3.65

3.6

2.9

3.88

3.69

3.62

3.88

3.9-4.9

4.5

Density

-

2.9

-

-

-

-

-

3.1

-

-

-

-

12.2

4.6

4.7

7.9

-

-

Suspended solids

-

-

40-65

18.4-23.0

38.6

70.34

-

15.3

-

1.0**

-

-

-

-

-

-

-

20-50

16.6

COD (BOD5)

59.4 (43.1)

21.85

40-55

17.5-20.8 (12.5-13.6)

90.75

107.0

97 (83)

17.6

28.98

20-30

56

(50)

10.8

35

122.33

48.95

51.75

103.76

20-55

12.1 (8.5)

TOC

-

9.15

-

-

-

-

-

-

10.70

-

28.33

-

-

45.60

-

-

35.15

-

-

Reducing substances

-

4.05

-

-

-

-

-

-

11.81

-

-

0.1

2

37.06

10.47

10.6

37.44

-

-

Glycerol

-

3.95

-

-

-

-

-

-

3.22

-

-

-

-

3.81

3.04

3.25

5.96

-

-

Lactic acid

-

6.63

-

-

-

-

-

-

3.51

-

1.4

-

-

61.14

-

-

17.53

-

-

Propionic acid

-

0.21

-

0.8-1.24

-

-

-

-

0.12

-

0.623

-

-

2.77

-

-

2.64

-

0.80

Succinic acid

-

0.21

-

-

-

-

-

-

0.31

-

1.059

-

-

0.23

-

-

0.430

-

-

Acetic acid

-

0.44

-

2.1-6.6

-

-

-

-

0.27

-

0.132

-

-

4.14

-

-

2.10

-

1.90

Sum of organic acids

-

9.67

-

-

-

-

-

-

5.29

-

10.795***

0.65***

1.46***

75.11

-

-

24.46

-

-

Total nitrogen

0.546

0.67

-

1.5-1.6

4.09*

8.8*

6.0

-

0.83

0.17-0.18*

2.18*

0.126

0.140

2.57

0.52

0.81

1.05

-

1.20

Ammonia nitrogen

-

0.096

-

0.5-0.6

-

-

-

0.01

0.19

-

0.052

-

-

0.361

0.235

0.07

0.308

-

0.18

Total phosphorus

0.228

0.441

-

0.17-0.18

0.40

0.218

-

-

0.47

0.27-0.30

-

-

-

0.816

0.259

0.327

0.277

-

0.140

Phosphate phosphorus

-

0.363

-

-

-

-

-

0.039

0.28

-

0.004

0.0642

0.0416

0.588

0.167

0.260

0.165

-

-

Note: * TKN = Total Kjeldahl Nitrogen.   ** TSS = Total Suspended Solids.   ***VFA = Volatile Fatty Acids.


Supported by UNESCO / MIRCEN network