#Question id: 14290
#Section 5: Bioprocess Engineering and Process Biotechnology
Acetobacter aceti converts alcohol to acetic acid according to the schiometric relation
In a vigorously agitated and aerated reactor containing 20 g/l ethanol, the organism produces 16g/l acetic acid and 2g/l was the residual ethanol concentration what are the theoretical and observed yields of acetic acid expressed in g/g ethanol
#Question id: 14291
#Section 5: Bioprocess Engineering and Process Biotechnology
overall, heating & cooling are 32.2, 9.8 & 10.1 respectively, THEN the holding time at 121^o-C of the process is (given that the specific death rate (k) of microorganisms at 121^o-C is 2.54 min-1 ):#Question id: 14292
#Section 5: Bioprocess Engineering and Process Biotechnology
#Question id: 14293
#Section 5: Bioprocess Engineering and Process Biotechnology
#Question id: 14294
#Section 5: Bioprocess Engineering and Process Biotechnology
#Question id: 14295
#Section 5: Bioprocess Engineering and Process Biotechnology
Pseudomonas methylotrophus is used to produce single-cell
protein from methanol in a 1000 m3 pressure-cycle airlift fermenter.
The biomass yield from substrate is 0.41 g g- 1, KS is
0.7 mg l- 1, and the maximum specific growth rate is 0.44 h- 1.
The medium contains 4% (w/v) methanol. A substrate conversion of 98% is
desirable. The reactor may be operated either in batch or continuous mode. If
operated in batch, an inoculum of 0.01% (w/v) is used and the downtime between
batches is 20 h. If operated continuously, a downtime of 25 d is expected per
year. Neglecting maintenance requirements, compare the annual biomass
production from batch and continuous reactors?
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