TABLE 3.
Potential growth based on mass balance
| Day | Measured quantity
|
Inferred potential productiona
|
|||||||
|---|---|---|---|---|---|---|---|---|---|
| Glucose consumedb (mg) | Effluent cellsc
|
Total
|
Sand associated
|
||||||
| mg | 1010 CFU | mg of biomass | 1010 CFU | Newd
|
Cumulative
|
||||
| mg of biomass | 1010 CFU | mg of biomass | 1010 CFU | ||||||
| 2 | 33.3 | 0.6 | 0.2 | 18.0 | 6.7 | 17.4 | 6.5 | 17.4 | 6.5 |
| 3 | 128.4 | 14.2 | 5.3 | 69.3 | 25.9 | 55.1 | 20.6 | 72.5 | 27.1 |
| 4 | 155.6 | 46.4 | 17.3 | 84.0 | 31.3 | 37.6 | 14.0 | 110.1 | 41.1 |
| 5 | 169.9 | 68.9 | 25.7 | 91.7 | 34.2 | 22.8 | 8.5 | 132.9 | 49.6 |
| 6 | 171.2 | 75.6 | 28.2 | 92.4 | 34.5 | 16.8 | 6.3 | 149.7 | 55.9 |
| 7 | 202.7 | 95.6 | 35.7 | 109.5 | 40.9 | 13.9 | 5.2 | 163.6 | 61.0 |
| Total | 861.1 | 301.3 | 112.3 | 464.9 | 173.5 | ||||
a
Based on glucose consumption and the following growth parameters: yield on glucose, 0.54; cell dry weight, 2.7 × 10−13 g; cell composition, 55% protein.
b
Glucose input minus glucose measured in effluent.
c
Based on measured effluent total cell protein.
d
Total daily potential growth minus daily measured effluent cells.