BioMed Research International / 2011 / Article / Tab 3

Research Article

Simultaneous Biohydrogen and Bioethanol Production from Anaerobic Fermentation with Immobilized Sludge

Table 3

Composition of soluble metabolites during continuous fermentation with CSTR under different OLR using molasses as the carbon source.

OLR
(kg/m3·d)
COD
(mg/L)
TVFA
(mg/L)
SMP
(mg/L)
HAc/SMP
(%)
HBu/SMP
(%)
HPr/SMP
(%)
EtOH/SMP
(%)
TVFA/SMP
(%)

8200057994136.621.52.438.461.5
1640007211265.641.512.71.242.857
2460001080211840.28.41.248.951

HAc: acetic acid; HBu: butyric acid; HPr: propionic acid; EtOH: ethanol; TVFA (total volatile fatty acid) = HAc + HBu + HPr; SMP: soluble microbial products (SMP = TVFA + EtOH).

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