(a)
Interpretation:
The plot that would yield a straight line and helps in determining the parameters a and b should be determined.
Concept introduction:
A hazardous waste needed to be disposed. So, the solution of this waste is pumped into a storage tank. Then, the solution subjected to chemical treatment. Due to the chemical treatment, the concentration (C) of the decomposing waste has been reported to vary with time (t) according to the formula.
Where a and b are constants.
(b)
Interpretation:
The value of a and b should be estimated using graphics software. The graph of C vs t to show both measured and predicted values should be plotted.
Concept introduction:
A hazardous waste needed to be disposed. So the solution of this waste is pumped into a storage tank. Then, the solution subjected to chemical treatment. Due to the chemical treatment, the concentration (C) of the decomposing waste has been reported to vary with time (t) according to the formula.
Where a and b are constants.
(c)
Interpretation:
Using answers in part (b), the initial concentration of the waste in the tank and the time required for C to reach its discharge level should be calculated.
Concept introduction:
A hazardous waste needed to be disposed. So the solution of this waste is pumped into a storage tank. Then, the solution subjected to chemical treatment. Due to the chemical treatment, the concentration (C) of the decomposing waste has been reported to vary with time (t) according to the formula.
Where a and b are constants.
(d)
Interpretation:
The little confidence in the time estimated in part (c) should be explained.
Concept introduction:
A hazardous waste needed to be disposed. So the solution of this waste is pumped into a storage tank. Then, the solution subjected to chemical treatment. Due to the chemical treatment, the concentration (C) of the decomposing waste has been reported to vary with time (t) according to the formula.
Where a and b are constants.
(e)
Interpretation:
The potential problems with the waste disposal method should be calculated.
Concept introduction:
A hazardous waste needed to be disposed. So the solution of this waste is pumped into a storage tank. Then, the solution subjected to chemical treatment. Due to the chemical treatment, the concentration (C) of the decomposing waste has been reported to vary with time (t) according to the formula.
Where a and b are constants.
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Chapter 2 Solutions
ELEM.PRIN.OF CHEM.PROCESS-ACCESS
- 4. An experimental test rig is used to examine two-phase flow regimes in horizontal pipelines. A particular experiment involved uses air and water at a temperature of 25°C, which flow through a horizontal glass tube with an internal diameter of 25.4 mm and a length of 40 m. Water is admitted at a controlled rate of 0.026 kgs at one end and air at a rate of 5 x 104 kgs in the same direction. The density of water is 1000 kgm³, and the density of air is 1.2 kgm. Determine the mass flow rate, the mean density, gas void fraction, and the superficial velocities of the air and water. Answer: 0.02605 kgs 1, 61.1 kgm³, 0.94, 0.822 ms-1, 0.051 ms-1arrow_forwardand the viscosity of the water is 1.24 × 104 Nsm 2. Answer: Slug flow 1. Determine the range of mean density of a mixture of air in a 50:50 oil-water liquid phase across a range of gas void fractions. The den- sity of oil is 900 kgm³, water is 1000 kgm³, and gas is 10 kgm³.arrow_forwardA chemical reaction takes place in a container of cross-sectional area 50.0 cm2. As a result of the reaction, a piston is pushed out through 15 cm against an external pressure of 121 kPa. Calculate the work done (in J) by the system.arrow_forward
- Example 7.2 Steam is generated in a high pressure boiler containing tubes 2.5 m long and 12.5 mm internal diameter. The wall roughness is 0.005 mm. Water enters the tubes at a pressure of 55.05 bar and a temperature of 270°C, and the water flow rate through each tube is 500 kg/h. Each tube is heated uniformly at a rate of 50 kW. Calle (a) Estimate the pressure drop across each tube (neglecting end effects) using (i) the homogeneous flow model and (ii) the Martinelli-Nelson correlation. (b) How should the calculation be modified if the inlet temperature were 230°C at the same pressure?arrow_forwardPlease solve this question by simulation in aspen hysysarrow_forward(11.35. For a binary gas mixture described by Eqs. (3.37) and (11.58), prove that: 4812 Pу132 ✓ GE = 812 Py1 y2. ✓ SE dT HE-12 T L = = (812 - 7 1/8/123) d² 812 Pylyz C=-T Pylyz dT dT² See also Eq. (11.84), and note that 812 = 2B12 B11 - B22. perimental values of HE for binary liquid mixtures ofarrow_forward
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