How to reduce the agitation caused when using the stir tank bioreactor to produce CAR T cells in bioreactor system
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How to reduce the agitation caused when using the stir tank bioreactor to produce CAR T cells in bioreactor system
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- The return line in a secondary clarifier Returns sludge at a lower concentration than in the aerator O Returns only volatile material O Returns sludge at a higher concentration than in the aerator Returns sludge at the same concentration as in the aeratorAluminum pieces inadvertently collect on the filter. a. If left on the filter, will the percent yield of the alum be reported as too high or as too low? Explain. b. If the aluminum pieces are detected on the filter, what steps would be used to remedy the observation? Explain.1. A commercial laundry is consdiering constucing an ion exchange process to remove hardness from water used in laundering oerpations. The laundry uses 1000 m/d of city water with Ca2+ at 4.5 meq/L and Mg2* at 2 meq/L. Their goal is to reduce total hardness (TH) to 1 meq/L. The softening resin has a TH capacity of 60 kg-TH/m of media with a recommended hydraulic loading rate of 0.4 m/(m2 min). Renegeration can be accomplihsed using 100 kg NaCl per m of ion exchange media in a 15% solution at a hydraulic loading rate of 0.04 m/(m² min). The exchanger tanks available to the laundrey have a diamter of 1 m. 1. What is the total bypass-water flow rate (m/d)? 2. What is the total daily resin volume required to soften the water (m³/d)? 3. How many exchanger tanks are required for a one-day operation cycle? 4. What is the resin bed depth (m) in each exchanger tank? 5. What is the daily volume of NaCl regenation solution used per tank (m/d)? 6. What is the time period required for resin…
- A treatment plant has been designed to achieve 99 percent inactivation of Giardia Lamblia using chlorine dioxide. The engineer used data on the disinfection of Giardia Lamblia at 20°C for the design, but the plant operates in a northern climate, and current estimates are that the low water temperature in some winters will be 0.5°C. Estimate the expansion required in the contact chamber in order to achieve the same inactivation at that temperature. You may assume complete mixing in the contact chamber and that the inactivation of Giardia Lamblia follows the Chick-Watson relationship. Ct values for achieving 90% inactivation of Giardia Lamblia (mg.min/L) Temperature (°C) 0.5 °C 5 °C 10 °C 15 °C Chlorine 0.97 0.63 0.48 0.32 dioxide * Note that the chick Watson's disinfection rate constant is a function of temperature. 20 °C 0.24 25 °C 0.16In order to prevent this rapid reaction -- is added to the clinker. CaSO4 Na20H Gypsum H20 Page 2 of 11 العربية الإنجليزية •..Please choose the correct answer for each question: 1. Activity of a gas in equilibrium with solution is ______? A. its partial pressure; B.1.0; C. its molar concentration; D. 0.0 2. During a sorption procedure, the substance transferred from the gas or liquid phase to the solid phase is called ______ A. sorbent; B. sorbate; C. partition; D. none of the above 3. When a chemical has a lower KOW, it is more ______ A. hydrophobic; B. hydrophilic; C. more absorbable; D. less absorbable 4. _____ occurs on the adsorbent surface A. Adsorption; B. Sorption; C. Absorption; D. Adsorption and absorption 5. _____ addresses the change in the amount of a substance of interest with time. A. The equilibrium approach; B. The kinetic approach; C. Henry’s Law; D. Freudlich isotherm equation
- 1. A commercial laundry is consdiering constucing an ion exchange process to remove hardness from water used in laundering oerpations. The laundry uses 1000 m³/d of city water with Ca²+ at 4.5 meq/L and Mg²* at 2 meq/L. Their goal is to reduce total hardness (TH) to 1 meq/L. The softening resin has a TH capacity of 60 kg-TH/m³ of media with a recommended hydraulic loading rate of 0.4 m³/(m² min). Renegeration can be accomplihsed using 100 kg NaCl per m³ of ion exchange media in a 15% solution at a hydraulic loading rate of 0.04 m³/(m² min). The exchanger tanks available to the laundrey have a diamter of 1 m. What is the total bypass-water flow rate (m³/d)? What is the total daily resin volume required to soften the water (m³/d)? How many exchanger tanks are required for a one-day operation cycle? What is the resin bed depth (m) in each exchanger tank? What is the daily volume of NaCl regenation solution used per tank (m³/d)? What is the time period required for resin regeneration in…The second stage nitrification process is :presented by the following equation Nitrobacter 2NO2+ 02 -> 2NO3 Give the value of Oxygen Required for this ?stage in Ib / IbN oxidized إختر أحد الخيارات 4.57 .a O 1.0 .b O 1.14 .c O 3.43 .d OExample 2: NaCl equivalent concentration 20,000 ppm. Temperature of %3D concentration 75°F. Find the Resistivity of the solution.
- An activated-carbon bed that is 12 ft x 6 ft x 2 ft deep is used in a benzene recovery system. The system is on-line for one hour and is then regenerated for one hour.Problem 2. A reverse osmosis membrane has a kw values of 2.5-10 L/(m²-s-bar) and an average ks value of 3.5.10+ L/(m²-s). Find the expected permeate salt concentration of chloride if the feed concentration is 4500 mg/L, the system operates at a gauge pressure of 35 bar on the feed side of the membrane, and 95%. Assume the permeate has a negligible osmotic pressure. Answer: 171 mg/L.Effluent from an industry 'A' has a pH of 4.2. The effluent from another industry 'B' has double the hydroxyl (OH-) ion concentration than the effluent from industry 'A'. pH of effluent from the industry '8' will be