Table 3 Physicochemical characterization of influent and effluent at the optimum organic loading rate
From: Methane production by treating vinasses from hydrous ethanol using a modified UASB reactor
Parameter | Influent* | Effluent* | Removal percentage** |
|---|---|---|---|
pH | 4.51 | 7.22 | - |
COD | 125600 | 39810 | 69 |
SO42- | 5433 | 0 | 100 |
S- | 175 | 275 | - |
NT | 1377 | 1160 | 16 |
N-NH3 | 113 | 230 | - |
Norganic | 1263 | 930 | 26 |
PO43- | 147 | 117 | 21 |
K+ | 6706 | 6838 | - |
Ethanol | 19901 | 232 | 99 |
Acetic acid | 2697 | 331 | 88 |
Propionic acid | 3009 | 2283 | 24 |
Butyric acid | 0 | 0 | - |