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2. A batch reactor is to be used to treat raw water to achieve 95% pollutant...
1. An industry produces a degradable waste at flow rate of 0.72 m/day. Concentration of pollutant...
1. An industry produces a degradable waste at flow rate of 0.72 m/day. Concentration of pollutant in the raw waste is 850 mg/L with first-order reaction rate constant of 2.5/day. The industry splits the flow into three parallel continuous stirred tank reactors at 0.25 m/day to reactor one, 0.3 m/day to reactor two and the remaining 0.17 m®/day to reactor three. If each reactor must achieve removal efficiency of 90%, what is the required detention time and the volume for...
A CSTR is used to treat an industrial waste. If the reaction that destroys the pollutant...
A CSTR is used to treat an industrial waste. If the reaction that destroys the pollutant follows first-order kinetics with k = 0.2 d^-1 what is the outlet concentration after treatment? Assume the reactor volume is 500 m3, the volumetric flowrate of the single inlet and outlet is 50 m^3/day, and the pollutant concentration in the inlet is at a concentration of 100 mg/L.
3. Three CSTR's are to be used in series. The second reactor has a volume twice...
3. Three CSTR's are to be used in series. The second reactor has a volume twice that of the first and third reactors. The influent flow has a concentration of 150 mg/l of species A at 100 gal/min. The rate constant for the second order reaction is 0.007 l/mg-h. What is the mean residence time and volume in each reactor if 80% of A is converted in each reactor?
Problem 3 (15 pts) A long, narrow lagoon is to be designed to treat 220 mg/L...
Problem 3 (15 pts) A long, narrow lagoon is to be designed to treat 220 mg/L of industrial waste flowing at a rate of 500 L/min. The decay rate constant was found to be 5.0(mg/L)/h (same as 5.0 mg/L·h). Assume 90% removal is achieved in the lagoon. a) What order is the reaction rate? b) What is the residence time in the lagoon? c) What is the volume in ms of this plug flow reactor? Draw a diagram, write governing...
It's not 840, 5320, or 6.34 Compare the reactor volume required to achieve 95% contaminant removal...
It's not 840, 5320, or 6.34
Compare the reactor volume required to achieve 95% contaminant removal efficiency for a CMFR vs. a PFR for the following conditions: steady-state, first-order reaction, flow rate 14 m3/d, and reaction rate coefficient 0.05 d. Your answers should represent the dimensionless ratio VCMER/VPR
You are designing a plug flow reactor that uses chlorine to destroy pathogens in water. You...
You are designing a plug flow reactor that uses chlorine to destroy pathogens in water. You want to reduce the pathogen concentration from 100 pathogens/L to below 1 pathogen/L through a first-order decay process with the constant decay rate of k = 0.15/ min. You plan on treating water at a rate of 1,000 gal/min. (a) What is the minimum contact time you need to achieve this reduction (in minutes)? And what is the minimum volume (in gallons) of the...
Question 3: n a batch reactor, the concentration of BoD decreases as the outcome of water treatment. The BOd values...
Question 3: n a batch reactor, the concentration of BoD decreases as the outcome of water treatment. The BOd values of water (a concentration) at different times were measured and the results are reported in the following table a. Graphically detemine the order of the reaction. b. caleulate the rate constant of the reaction (report its unit too) c. f allowable concentration of BoD is 3o mg/l, determine (mathematicaluly) how much time is required to reach this BOD Level (Hint:...
A CMFR is used to treat an input water stream flowing at a rate of 3.0...
A CMFR is used to treat an input water stream flowing at a rate of 3.0 m^3/h. The input pollutant concentration is 25.0 mg/L and decays with a first-order rate constant of 0.20 day^-1. The effluent from the CMFR must have a concentration of 10.0 mg/L. a) What is the required volume of the CMFR? b) If a PFR is used instead, what is the required volume of the PFR?
An aqueous solution containing reactant A is fed to a batch reactor, operated as part of...
An aqueous solution containing reactant A is fed to a batch reactor, operated as part of a continuous process involving other equipment. The feed rate to the reactor is 500 L/min. The reaction, A + 2B rightarrow C is second order irreversible, with the rate expression given as rr_A = 0.04 C_AC_B, gmole/L middot min If C_A0 = 1.7 gmole/L and C_B0 = 3.0 gmole/L, what is the size of the reactor required to obtain an 80% conversion of A?...
Question 11: Gas phase reactions in a Batch Reactor A gas phase reaction, shown below, is...
Question 11: Gas phase reactions in a Batch Reactor A gas phase reaction, shown below, is to be performed isothermally in a batch reactor of constant volume. The reactor is filled with 20 moles of pure A and its volume is 20 litres (a) If the temperature is 127 C, what is the initial total pressure? (b) What would be the final pressure assuming the reaction goes to completion? (c) If the reaction is first order, with a rate constant...
1. An industry produces a degradable waste at flow rate of 0.72 m/day. Concentration of pollutant in the raw waste is 850 mg/L with first-order reaction rate constant of 2.5/day. The industry splits the flow into three parallel continuous stirred tank reactors at 0.25 m/day to reactor one, 0.3 m/day to reactor two and the remaining 0.17 m®/day to reactor three. If each reactor must achieve removal efficiency of 90%, what is the required detention time and the volume for...
A CSTR is used to treat an industrial waste. If the reaction that destroys the pollutant follows first-order kinetics with k = 0.2 d^-1 what is the outlet concentration after treatment? Assume the reactor volume is 500 m3, the volumetric flowrate of the single inlet and outlet is 50 m^3/day, and the pollutant concentration in the inlet is at a concentration of 100 mg/L.
3. Three CSTR's are to be used in series. The second reactor has a volume twice that of the first and third reactors. The influent flow has a concentration of 150 mg/l of species A at 100 gal/min. The rate constant for the second order reaction is 0.007 l/mg-h. What is the mean residence time and volume in each reactor if 80% of A is converted in each reactor?
Problem 3 (15 pts) A long, narrow lagoon is to be designed to treat 220 mg/L of industrial waste flowing at a rate of 500 L/min. The decay rate constant was found to be 5.0(mg/L)/h (same as 5.0 mg/L·h). Assume 90% removal is achieved in the lagoon. a) What order is the reaction rate? b) What is the residence time in the lagoon? c) What is the volume in ms of this plug flow reactor? Draw a diagram, write governing...
It's not 840, 5320, or 6.34
Compare the reactor volume required to achieve 95% contaminant removal efficiency for a CMFR vs. a PFR for the following conditions: steady-state, first-order reaction, flow rate 14 m3/d, and reaction rate coefficient 0.05 d. Your answers should represent the dimensionless ratio VCMER/VPR
Question 3: n a batch reactor, the concentration of BoD decreases as the outcome of water treatment. The BOd values of water (a concentration) at different times were measured and the results are reported in the following table a. Graphically detemine the order of the reaction. b. caleulate the rate constant of the reaction (report its unit too) c. f allowable concentration of BoD is 3o mg/l, determine (mathematicaluly) how much time is required to reach this BOD Level (Hint:...
A CMFR is used to treat an input water stream flowing at a rate of 3.0 m^3/h. The input pollutant concentration is 25.0 mg/L and decays with a first-order rate constant of 0.20 day^-1. The effluent from the CMFR must have a concentration of 10.0 mg/L. a) What is the required volume of the CMFR? b) If a PFR is used instead, what is the required volume of the PFR?
An aqueous solution containing reactant A is fed to a batch reactor, operated as part of a continuous process involving other equipment. The feed rate to the reactor is 500 L/min. The reaction, A + 2B rightarrow C is second order irreversible, with the rate expression given as rr_A = 0.04 C_AC_B, gmole/L middot min If C_A0 = 1.7 gmole/L and C_B0 = 3.0 gmole/L, what is the size of the reactor required to obtain an 80% conversion of A?...
Question 11: Gas phase reactions in a Batch Reactor A gas phase reaction, shown below, is to be performed isothermally in a batch reactor of constant volume. The reactor is filled with 20 moles of pure A and its volume is 20 litres (a) If the temperature is 127 C, what is the initial total pressure? (b) What would be the final pressure assuming the reaction goes to completion? (c) If the reaction is first order, with a rate constant...
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