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Consider a PFR in a series with a CSTR (PFR is before theCSTR). Determine the required reactor volumes for the PFR (VPFR)and the CSTR (VCSTR) to give an overall treatment efficiency of 95%of compound A. Report in Liters.
a. Assume the overall system is at steady-state, theflow rate is 15 L/min, the detention time is the PFR is 1.5 hours,and the decay rate of compound A is defined by a first-order ratereaction (k = 1 h-1).
b. If the feed concentration of A is 250 mg/l, what isthe concentration in the line transferring the water from reactor#1 (PFR) to reactor #2 (CSTR)?
c. What is the detention time in the CSTR?
A 110 f t long, 5 in in diameter (f = 0:033) connects two reservoir whose water surface elevations differ by 12 f t. Compute flow rate in pipe.
This weir is to be replaced by an uncontracted horizontal weir that will maintain the same upstream depth. Determine the height of the weir if the discharge coefficient is based on the following equation: C = 1.78 * 0.22(H/p)
The two shafts in a speed-reducer unit are subjected to couples of magnitude M1 = 18 N · m and M2 = 7.5 N · m, respectively. Replace the two couples with a single equivalent couple, specifying its magnitude and the direction of its axis.
A rectangular channel carries a discharge of 2.00 m3/sec per meter of channel width over a weir crest that is 1.4 m in height. The energy grade line upstream of the weir measure 2.7 m above the channel bottom.
A process is normally distributed and in control, with known mean and variance, and the usual three-sigma limits are used on control chart, so that the probability of a single point plotting outside the control limits
For a multi-file project that contains just one class, list and describe each of the files that would be required to implement and test the functions of the class.
A light bar AD is suspended from a cable BE and supports a 50-lb block at C. The ends A and D of the bar are in contact with frictionless vertical walls. Determine the tension in cable BE and the reactions at A and D
The operating cost will be $10,000 per quarter with a salvage value of $25,000 after its 2-year life. Process B will have a first cost of $250,000, an operating cost of $15,000 per quarter and a $40,000 salvage value after its 4-year life.
The modulus of elasticity of the sand was determined to be 10,000 kN/m^3 throughout. Using the Schmertmann's method, estimate the settlement of the footing four years after construction, using four 1 meter thick sublayers.
the boiling point of water decreases wiht elevation because of the pressure change. what is the boiling point of water at an elevation of 2000m and at an elevation 4000 m for standard atmospheric conditions
In a study it was found that 39% of the bacteria died within 9 hoursand 67% died within 20 hours. If the rate of andwer proportional to the number remaining, how long would it take to obtain a 99.9% reduction in the bacteria
A rigid open cylinder having an inside diameter of 15 mm contains a column of water 500 mm long at 20 degrees C. If a compressive force of 2 kN is applied to the top of the water column by a frictionless 15 mm piston
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