Table 2.
Summary performances of repeated-batch cultivation by C. utilis UNA1 and C. utilis IFO1086
| Sweet-potato shochu wastewater | Barley shochu wastewatera | ||||
|---|---|---|---|---|---|
| UNA1 | IFO1086 | UNA1 | IFO1086 | ||
| Periods | Cycles | 30 | 12 | 50 | 12 |
| DOC | Influent (mg/l) | 15877 ± 740 | 15621 ± 1201 | 19731 ± 311 | 18444 ± 557 |
| Effluent (mg/l) | 7691 ± 545 | 8179 ± 927 | 8075 ± 314 | 8217 ± 495 | |
| Removal ratio (%) | 51.6 ± 3.4 | 47.6 ± 5.9 | 59.1 ± 1.6 | 55.5 ± 2.7 | |
| DTN | Influent (mg/l) | 1013.3 ± 46.7 | 985.2 ± 71.5 | 2736.5 ± 67.0 | 2674.6 ± 59.7 |
| Effluent (mg/L) | 477.9 ± 18.8 | 489.6 ± 38.3 | 1748.4 ± 44.4 | 1792.9 ± 87.9 | |
| Removal ratio (%) | 52.8 ± 1.9 | 50.3 ± 3.9 | 36.1 ± 1.6 | 33.0 ± 3.3 | |
| DTP | Influent (mg/l) | 289.2 ± 13.9 | 264.7 ± 17.5 | 383.1 ± 7.4 | 378.7 ± 6.3 |
| Effluent (mg/l) | 116.3 ± 10.4 | 131.5 ± 16.4 | 195.4 ± 10.9 | 228.4 ± 20.6 | |
| Removal ratio (%) | 59.8 ± 3.6 | 50.3 ± 6.2 | 49.0 ± 2.8 | 39.7 ± 5.4 | |
| pH | Influent (−) | 4.08 ± 0.01 | 3.98 ± 0.01 | 4.07 ± 0.03 | 4.18 ± 0.00 |
| Effluent (−) | 7.28 ± 0.27 | 6.17 ± 0.65 | 8.00 ± 0.15 | 8.49 ± 0.07 | |
| OD660 | Effluent (−) | 32.7 ± 2.1 | 31.4 ± 3.4 | 34.9 ± 1.2 | 36.2 ±1.5 |
aThe results of barely shochu wastewater (diluted twice) previously reported (12) were shown for reference.
Data are means ± standard deviation of samples of each cycle.