Industrial Residue Vinasse

The industrial residue or vinasse from a sugar factory contains solids, N, P, K, Ca, Mg, sulfates, carbon, organic matter, and reductors (Camhi 1979) (Table 16.4). It serves as a source of nutrients, and contains very low levels of heavy metals.

Table 16.4 The contents (kg l-1) of

vinasse (from Camhi 1979)

Parameter

Molasses

Cane juice

Mixture of molasses and cane juice

Total solids

81.50

23.70

52.70

Volatile solids

60.00

20.00

40.00

Fixed solids

21.50

3.70

12.70

Nitrogen

0.45-1.60

0.15-0.70

0.48-0.71

Phosphorus as P2O5

0.10-0.29

0.01-0.21

0.01-0.20

Potassium as K2O

3.74-7.83

1.20-2.10

3.34-4.60

Calcium as CaO

0.45-5.18

0.13-1.54

1.33-4.57

Magnesium as MgO

0.42-1.52

0.20-0.49

0.58-0.70

Sulfates as SO4

6.40

0.60-0.76

3.70-3.73

Carbon

11.20-22.9

5.70-13.40

8.70-12.10

Organic matter

63.40

19.50

38.00

Reductors

9.50

7.90

8.30

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