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Suppose that 100 L/min are drawn from a fermentation tank and passed through anextraction tank in which the fermentation product (in the aqueous phase) is mixedwith an organic solvent, and then the aqueous phase is separated from the organic phase. The concentration of the desired enzyme ( 3-hydroxybutyrate dehydrogenase )in the aqueous feed to the extraction tank is 10.2 g/L. The pure organic extraction solvent runs into the extraction tank at the rate of 9.5 L/min. If the ratio of the enzyme in the exit product stream (the organic phase) from the extraction tank to the concentration of the enzyme in the exit waste stream ( the aqueous phase )from the tank is D= 18.5( g/L organic)/(g/L aqueous), what is the fraction recovery of the enzyme and the amount recovered per min? Assume negligible miscibility between the aqueous and organic liquids in each other, and ignore any change in density on removal or addition of the enzyme to either stream.
Determine the concentration of biomass at t=2h assuming quasi steady state. If alpha=0.2g/g Determine the concentration of product at t=2h assuming P0=0
Suppose a 125-lb person lies supine on a board resting on knife edges spaced 72 in. apart (Fig. 5.7). Assume that the center of gravity of the lower limb is located through the center line of the limb and 1.5 in. above the knee cap. Estimate the w..
The activated carbon adsorbent has average bulk density 120 kg/m3 and heat capacity 0.7 J/g.°C. The solvent flammability limits in air are 2.5 to 12.0 vol% at 293 K and 1.2 to 16.0 vol% at 363 K.
Take the saturation temperature of n-propanol at 2.1 bar as 118ŽC. The otherphysical properties required can be found in the literature, or estimated.
Additionally, the only stable isotope of fluorine is fluorine-19. Predict possible modes of decay for fluorine-21, fluorine-18, and fluorine-17.
question 1what are the two main types of industrial ventilation which are used to control airborne contaminants in a
QUESTION 11 - Steam boiler plant in a petroleum refinery has an overall thermal efficiency on gross C.V . of the fuel of 85 % and an out put of 90720 kg of steam per hour. The steam is produced at a pressure ..
An electronics plant uses an adsorption system to recover solvent from a vent gas stream and prevent volatile organic compound (VOC) emissions. The vent gas flow rate is 20 m3 /s of dry air at 293 K, 1.5 atm.
The data in Table 1 were obtained from a kinetic study of an enzymatic reaction. The substrate S (with a concentration s) was converted, using an enzyme, to a product in 4 different experimental runs. The initial conditions of each experiment (initia..
Your painting showed a carbon-14 activity of 15.1 counts per minute per gram. Could it be a genuine Rembrandt?
For a feed rate 2000 kg/h of solution, composition 30% w/w MEK, determine the number of stages required to recover 95% of the dissolved MEK, using 700 kg/h TCE, with countercurrent flow. Tie-line data for the system MEK-water-TCE percentages w/w, ..
2.8 g of N2 gas at 300 k and 20 atm was allowed to expand isothermally against a constant external pressure of 1 atm. calculate del E ,q and W for the gas.
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