Page 61 - 048

43

Table 3.9 Soluble metabolite products and COD balance obtained from different mixing ratio of SLS to POME with initial organic

concentration of 7 g-VS added/L at the end of fermentation.

Concentration (g-COD/L) COD distribution (%)
Products Treatments (SLS:POME (%v/v)) Treatments (SLS:POME (%v/v))

SLS POME 55:45 Sucrose control SLS POME 55:45 Sucrose control
Initial COD added 6.72 10.11 8.25 10.00 6.72 10.11 8.25 10.00
Substrate consumption -100 -100 -100 -100
Hydrogen 0.10 0.80 0.42 2.29 1.49 7.91 5.09 22.9
Ethanol 0.61 0.61 0.18 0.21 9.08 6.03 2.18 2.10
Acetic acid 0.77 0.91 1.21 1.43 11.46 9.00 14.67 14.30
Lactic acid 1.16 0.00 0.00 0.00 17.26 0.00 0.00 0.00
Propionic 0.44 0.37 0.63 0.00 6.55 3.66 7.64 0.00
Butyric acid 0.60 2.68 0.41 2.96 8.93 26.51 4.97 29.60
Biomass 1.01 1.52 1.24 1.50 15.03 15.03 15.03 15.00
Sum 4.68 6.89 4.10 8.39
Soluble COD - A -30.33 -31.85 -50.33 -16.07
*A = soluble metabolite products (including hydrogen, acetic, propionic and butyric acids) and biomass

43