In the pilot study, which was prepared using glass cylinder airlift bioreactors with a diameter of 140 mm, in which you calculated the mixing time in your visa assignment, it was stated that the draft tube had a height of 600 mm and a diameter of 70 mm. . This study is intended to be scaled up. It is planned to use glass cylinder airlift bioreactors with a diameter of 700 mm in the reactor to be designed for scale-up, and the draft tube used will have a height of 1200 mm and a diameter of 300 mm. Calculate the aeration rate that should be applied for the time that the mixing time remains the same in the designed new reactor and determine the mixing time of the scale-up. Evaluate the effect on time. (For draft tubes, C: 2.2)

In the pilot study, which was prepared using glass cylinder airlift bioreactors with a diameter of 140 mm, in which you calculated the mixing time in your visa assignment, it was stated that the draft tube had a height of 600 mm and a diameter of 70 mm. . This study is intended to be scaled up. It is planned to use glass cylinder airlift bioreactors with a diameter of 700 mm in the reactor to be designed for scale-up, and the draft tube used will have a height of 1200 mm and a diameter of 300 mm. Calculate the aeration rate that should be applied for the time that the mixing time remains the same in the designed new reactor and determine the mixing time of the scale-up. Evaluate the effect on time. (For draft tubes, C: 2.2)

Materials Science And Engineering Properties

1st Edition

ISBN:9781111988609

Author:Charles Gilmore

Publisher:Charles Gilmore

Chapter10: Oxidation, Degradation, Corrosion, Electroprocessing, Batteries, And Fuel Cells

Section: Chapter Questions

Problem 10.1P

See similar textbooks

Similar questions

Environmental Engineering: A reaction takes place in aqueous solution and is first order. The required degree of conversion is 99% and this takes place in 10 minutes in a batch experiment. a. What would the necessary detention time be in a CSTR? b. What would be the necessary detention time to achieve 99% conversion in a CSTR system using two equal tanks in series?
Please solve with steps
..
Determine the pH of the solution produced in the reaction flask when 25.00mL of 0.100 M NaOH has been added to 25.00 mL of 0.100 M HCl
A Pump & Treat water treatment system at a contaminated site is designed to treat 5 m3/d of ground water in a reactor designed as a well mixed system. The effluent must meet quality standards of 25 mg/L of Iron. The treatment reactor’s 20 m3 volume is believed to be insufficient to achieve the standard. The ground water has an iron concentration of 100 mg/L and the treatment reactor has a kinetic constant of 0.5 d-1. – Confirm that the treatment system will NOT meet the effluent quality standards. – If not modify the design by adding a PFR system (using same treatment process and kinetics), what volume should the PFR addition be?
The chief engineer in charge of refinery operations was not satisfied with the preliminary design for storage tanks to be used as part of a plant expansion program. The engineer who submitted the design was called in and asked to reconsider the overall dimensions of the light in the article in The Chemical Engineer, titled “How to Size Future Process Vessels.” The original design submitted called for 4 tanks 5.2 meters in diameter and 7.0 meters high. From a graph in the article, the engineer found that the present ratio of height to diameter of 1.35 was 111% of the minimum cost and that the minimum cost for a tank occurred when the ratio of height to diameter was 4 to 1. The cost for the tank design as originally submitted was estimated to be $28,000. What are the optimum tank dimensions if the volume remains the same as for the original design? What total savings may be expected through redesign?
10-kg of R-134a fill a 1.348-m3 rigid container at an initial temperature of 240oC. The container is then heated until the pressure is 200 kPa. Determine the final temperature and the initial pressure
Il Consider the capability of a process that puts pressurized grease in an aerosol can. The design specification calls for an average of 50 pounds per square inch (psi) of pressure in each can with an upper tolerance limit of 56psi and a lower tolerance limit of 46psi. A sample is taken from production, and it is found that the cans average 51psi with a standard deviation of 2psi. Find the following unknowns. 1. Capability Index (Cpk) 2. Is the process capable at the 30 level? 3. What is the probability of producing a defect? Hind: use the standard normal table as seen below.
7. A contaminated soil is to be excavated and treated in a completely mixed aerated lagoon at a Superfund site. To determine the time that will take to treat the contaminated soil, a lab completely mixed batch reactor is used to gather the following data. Assuming a first-order reaction, estimate the rate constant, k and determine the time (t) to achieve 99% reduction in the original concentration. Time (day) Day 1 Day 16 Note that the 1st order batch system follows, C = Coekt Waster Concentration (mg/L) 280 132
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 0.16
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
Please upload your full solution to the following problem. A series of experiments was conducted in a batch reactor to assess the disinfection by chlorine of the protozoan Giardia lamblia. In each experimental run, the concentration of free available chlorine was varied and the time required to kill 99 percent of the organisms was determined. The results showed that a Ct value of 100 mg-min/L was sufficient to achieve 2-log removal. Assume that the Chick- Watson model holds with n = 1. A. What value is the psuedo-first order disinfection rate coefficient k (min ¹) when the chlorine concentration is 1 mg/L? B. At a chlorine concentration of 1 mg/L and a contact time of 10 minutes, what fraction of the G. lamblia organisms would be killed? C. At a chlorine concentration of 10 mg/L and a contact time of 5 minutes, estimate the fraction of the G. lamblia organisms that would be killed. 4