4. Calculate the time for 99% (2-log) removal via natural inactivation of Cryptosporidium from water at a typical winter-time temperature of lakes here in Southern California of 12oC.
For 2 log removal of Cryptosporidium at 12 degree celcius temperature, lets assume the concentration of chlorine in lake is 1.8 mg/L. So at pH 7 of water,
CT = C x T where C is concentration of disinfectant in mg/L and T is Actual detention time in minutes.
value of CT = 122 and C = 1.8 mg/L
122=1.8 x T
T = 122/1.8
T = 67.7 or 68 min mg/L
4. Calculate the time for 99% (2-log) removal via natural inactivation of Cryptosporidium from water at...
2. A natural product (MW-150) distills with steam at a boiling temperature of 99°C at atmospheric pressure. The vapor pressure of water at 99°C is 733 mm Hg. a) Calculate the mass of the natural product that codistills with each gram of water at 99°C. (2 pts.) Po 7500- 53 bo 27 nm non 70 Pb - Pa se Plo b) How much water must be removed by steam distillation to recover this natural product from 0.5 g of a...
2. *D1* Salt water is plentiful on earth; natural supplies of fresh water, on the other hand, are dwindling while mankind's demands grow. One appealing solution to this imbalance is to remove the salt from ocean water by some means. Here you will investigate the energy input that is necessary to accomplish this task. Special membranes can be manufactured that allow water, but not ions, to pass through. By pushing such a membrane through salt solution, one can separate salt...
you can assume all data
Nr 7- FINAL TEST 31 may 2019 1. Enhanced geothermal system. Please calculate amount of water steam at pressure Sbar(a), if saturated water 95 ton per hour throttled from 20 bar to 5 bar(a). 2. District heating boiler house with power output 10 MW consuming wood chips with moisture 40% decide to install flue gas condenser. If flue gas temperature will be 40 C please advice how big will be boiler house power after condenser...
2. A pump delivers 4 m3/min of water from 110 kPa to 350 kPa. Both pipe's gages are on the same level. The inlet and outlet pipe diameters are 16 cm and 13 cm, respectively. The inlet and outlet temperature are both 25°C and mass density of water is 997 kg/m². Calculate the pump work in kW.
4: Model a water molecule as 2 hydrogen atoms and one oxygen molecule at the ends of an equilateral triangle with sides of length 10-10m. (14 pts) A) Calculate the moment of inertia of this configuration about the center of the triangle. This requires a bit of geometry to get the distance from the ends to the center. (5 pts) B) Calculate the energy and wavelength of a photon released in the 1-2 to 1-1 tran- sition the l-10 to...
4. Comparison of process paths: Calculate the AH for 1 kg of water going from liquid at the triple point of water (0.01 °C and 0.0061 bar) to saturated steam (100 °C, 1 atm) by two different process paths. The two paths are defined as a. liquid water at triple point to saturated vapor at the triple point, followed by heating the saturated vapor to 0.0061 bar to saturated vapor at 1 atm. b. liquid water at triple point heated...
The following questions are from an experiment titled
Friedel-Crafts Alkylation for Organic Chemistry II Lab. There are
pictures attached of the lab manual.
2) Is this method a good route for the preparation of
p-sec-butyltoulene? Give reasons for your answer.
3) Why do you use a large excess of toulene. What are its
functions?
4) What is the purpose for adding the hydrochloric acid to the
water in the separatory funnel in step 5? Hint: If no acid is
added,...
10. Write a one-page summary of the attached paper? INTRODUCTION Many problems can develop in activated sludge operation that adversely affect effluent quality with origins in the engineering, hydraulic and microbiological components of the process. The real "heart" of the activated sludge system is the development and maintenance of a mixed microbial culture (activated sludge) that treats wastewater and which can be managed. One definition of a wastewater treatment plant operator is a "bug farmer", one who controls the aeration...