The oak tree pathogen Phytophthora ramorum has migrated 650 km in ten years. West Nile virus spread from New York State to 46 others states in five years. The difference in the rate of spread is probably related to

TLS Online TPP Program

#Question id: 31767

#Unit 12. Biochemical Engineering

A bacteria l culture, with the molecular formula - C_4.4 H_7.3 0_1.2 N_0.86 is cultivated under aerobic conditions with hexadecane (C16H34) as substrate. The growth can be described by equation: C₁₆H₃₄ + 16.28O₂ + 1.42NH₃ ➔ 1.65C_4.4  H_7.3O_1.2 N_0.86 + 8.74CO₂ + 13.11 H₂O. Assuming 100% conversion, the yield of cell mass from hexadecane will be

TLS Online TPP Program

#Question id: 31773

#Unit 12. Biochemical Engineering

A strain of E coli is cultured in a 15 m³ mechanically stirred bioreactor. Under the operating conditions, the value of k_La is 0.17 s^-1. Oxygen solubility in the broth is 8x 10^-3 kgm ^-3 . If the specific rate of O₂ uptake is 12.5 mmoles.g^-1 .h^-1, what is the maximum possible cell concentration?

TLS Online TPP Program

#Question id: 31857

#Unit 12. Biochemical Engineering

Bacillus polymyxa strain was cultivated under anaerobic condition in a media containing 10 g/L glucose as the sole carbon source. The glucose was completely utilized in 10 h producing 2, 3-Butanediol with productivity of 5 g/L/h. What is the yield of 2, 3- Butanediol produced per gram of glucose consumed (g/g)? 

TLS Online TPP Program

#Question id: 23904

#Unit 12. Biochemical Engineering

A continuous reactor has a productivity of 0.5 g/l/h. The volume of reactor or required to produce 1.2 ton/day of the product is

TLS Online TPP Program

#Question id: 24057

#Unit 12. Biochemical Engineering

An exponentially increasing leaf of concentrated .substate is led Soo a led batch reactor to maintain a courant specific growth rate 0.35 H^-1. if  the feed is 5ml/hr at time. t 0. then feed alter 4 hrs will be approximately

TLS Online TPP Program

#Question id: 21634

#Unit 12. Biochemical Engineering

The equation for aerobic production of acetic acid from ethanol is:

CH2OH+O2→CH3CO2H+H2O.

(ethanol) (acetic acid)

Acetobacter aceti bacteria are added to vigorously-aerated medium containing 10 g.14 ethanol. After some time, the ethanol concentration is 2 g.-2 and 7.5 g.11 of acetic acid is produced. What is the observed yield (Yoing-) and theoretical yield (Yting-8") of acetic acid from ethanol?