14.7 Batch and continuous biomass production Pseudomonas methylotrophus is used to produce single cell protein from...

14.7 Batch and continuous biomass production 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, KS is 0.7 mg/l, and the maximum specific growth rate is 0.44 1/h. The medium contains 4% (w/v) methanol. A substrate conversion of 98% is desirable. The reactor may be operated in either 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 continuous operations are used at steady state, a downtime of 25 days is expected per year. Neglecting maintenance requirements, compare the annual biomass production achieved using batch and continuous reactors.

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Amanda K answered 1 year ago

Batch and continuous biomass production Pseudomonas methylotrophus is used to produce single cell protein from methanol...

Batch and continuous biomass production Pseudomonas methylotrophus is used to produce single cell protein from methanol in a 1000-m pressure-cycle airlift fermenter. The biomass yield from substrate is 0.41 gg-, Ks is 0.7 mg 1", and the maximum specific growth rate is 0.44 h. The medium contains 4% (w/v) methanol. A substrate conversion of 98% is desirable. The reactor may be operated in either batch or continuous mode. If operated in batch, an inoculum of 0.01% (w/v) is used and...

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Consider a continuous culture of Bacillus subtilis bacteria, which are used to produce the enzyme amylase...

Consider a continuous culture of Bacillus subtilis bacteria, which are used to produce the enzyme amylase during the growth phase. The relevant parameters for growth of this bacteria are μMAX = 0.88 hr-1, YX/S = 0.5 gdw/gr substrate, S0 = 4.0 gr substrate/L, and the Monod constant KS = 0.3 gr/L, while the protein yield during growth phase is YP/X (aka product parameter α) = 0.12 g protein/gdw. The chemostat is operated at a dilution rate that is 60% of...

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