Engineering, 11.02.2021 22:30 timijebs
A wastewater is to be disinfected using ultraviolet (UV) light. Batch experiments find that the bacterial concentration decays under UV light with first-order kinetics, with a half of the initial bacteria killed after 6.2 minutes of illumination. You need to design a reactor than can kill 99% of bacteria in a stream having a flow rate of 140,000 gal/d. Assume that regardless of the reactor type it will be possible to have UV illumination conditions identical to those of the batch experiment.
A. Based on the batch experiments, what is the first-order rate constant k for bacterial inactivation?
B. If a PFR is used for the reactor, what reactor volume is required, in gallons?
C. If a CMFR is used for the reactor, what reactor volume is required, in gallons?
Answers: 2
Engineering, 03.07.2019 14:10
Amass of 1.5 kg of air at 120 kpa and 24°c is contained in a gas-tight, frictionless piston-cylinder device. the air is now compressed to a final pressure of 720 kpa. during the process, heat is transferred from the air such that the temperature inside the cylinder remains constant. calculate the boundary work input during this process.
Answers: 2
Engineering, 04.07.2019 18:10
The higher the astm grain-size number, the coarser the grain is. a)-true b)-false
Answers: 3
Engineering, 04.07.2019 18:10
Manometers are good examples of measuring instruments, nowadays they are not as common as before. a)-capacitive probe gauges b)-gravitational gauges deformation ) gauges d)-digital gauges
Answers: 1
Engineering, 04.07.2019 18:10
Hydraulic fluid with a sg. of 0.78 is flowing through a 1.5 in. i.d. pipe at 58 gal/min. the fluid has an absolute viscosity of 11.8 x 105 lbf-sec/ft2. is the flow laminar, turbulent or within the critical range? give both a numerical reynolds number and a term answer.
Answers: 3
A wastewater is to be disinfected using ultraviolet (UV) light. Batch experiments find that the bact...
Mathematics, 14.02.2021 23:00
Mathematics, 14.02.2021 23:00
Mathematics, 14.02.2021 23:00
Spanish, 14.02.2021 23:00
Mathematics, 14.02.2021 23:00
Mathematics, 14.02.2021 23:00
History, 14.02.2021 23:00
Arts, 14.02.2021 23:00
Business, 14.02.2021 23:00
Physics, 14.02.2021 23:00
Mathematics, 14.02.2021 23:00