#Question id: 27325
#Section 5: Bioprocess Engineering and Process Biotechnology
if the initial substrate concentration is 15 g/L and initial biomass concentration is 0.1 g/L. The substrate is then consumed completely and produces 6.4 g/L of biomass. The yield coefficient will be
#Question id: 412
#Section 4: Fundamentals of Biological Engineering
All of the following contribute to the large, negative, free-energy change upon hydrolysis of “high-energy” compounds except:
#Question id: 1910
#Section 2: General Biology
Hyperacute graft rejection is caused by:
#Question id: 27471
#Section 5: Bioprocess Engineering and Process Biotechnology
In which of the following method, the enzyme is bound to a suitable adsorbent material rendering it immobile?
#Question id: 14200
#Section 5: Bioprocess Engineering and Process Biotechnology
A fluidized-bed, immobilized-cell bioreactor is used for the
conversion of glucose to ethanol by Z. mobilis cells immobilized in
k-carrageenan gel beads. The dimensions of the bed are 10 cm (diameter) by 200
cm. Since the reactor is fed from the bottom of the column and because of CO2
gas evolution, substrate and cell concentrations decrease with the height of
the column. The average cell concentration at the bottom of the column is X0
= 45 g/l, and the average cell concentration decreases with the column
height according to the following equation:
where Z is the column height (cm). The specific rate of
substrate consumption is qS = 2 g S/g cells . h. The feed flow rate
and glucose concentration in the feed are 5 l/h and 160 g glucose/l,
respectively.
Determine the ethanol concentration in the effluent (g/l . h) if YP/S = 0.48 g ethanol/g glucose