Solid Waste Engineering
3rd Edition
ISBN: 9781305635203
Author: Worrell, William A.
Publisher: Cengage Learning,
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Question
Chapter 6, Problem 6.3P
To determine
The empirical formula for the organic fraction of refuse and the theoretical production of methane from this hypothetical compound.
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Estimate the theoretical production of landfill gas (CH4 only) from the degradation of 20.3 kg of rapidly decomposable MSW. Assume the density of methane is 0.7177 kg/m3.
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A waste has an ultimate BOD of 1,000 mg/L and a kL of 0.1/day. What is its 5-day BOD?
Chapter 6 Solutions
Solid Waste Engineering
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- Estimate the energy content of solid waste sample with the composition given in a table below. What is the content on dry basis and ash free dry basis?arrow_forwardDescribe the physical, chemical and biological components of solid wastesarrow_forwardCalculate the ultimate BOD of a waste if its BOD5 is 100 mg/L and the K is 0.130 d-1arrow_forward
- (a) Calculate the ultimate BOD of a waste that has a measured 5-day BOD of 20 mg/L, assuming a BOD rate coefficient of 0.15/day measured at 20 degrees C. (b) Estimate the rate coefficient if the temperature of the waste is raised to 30 degrees C. (c) What would be the BOD5 at 30 deg. C?arrow_forwardIf the bicarbonate concentration of a leachate is 1000 mg/L and the pH measured in the field is found to be 5.8, estimate the partial pressure of the carbon dioxide within the landfill.arrow_forwardA sample of refuse has a moisture content of 20%. A 1.2 g sample is placed in a calorimeter, and a gross calorific value of 14,400 kJ/kg is measured based on the temperature rise. Further analysis shows that .3 g of ash remains in the bomb calorimeter after combustion. Calculate the HHV in terms of (a) moisture-free and (b) moisture- and ash-freearrow_forward
- Describe the different types of domestic solid waste.arrow_forwardCalculate the ultimate BOD of a waste that has a measured BOD5 of 24.6 mg·L-1, assuming a BOD rate coefficient (k) of 0.13 day-1.arrow_forwardIf the BOD3 of waste is 75 mg/L and the K is 0.150 d-1 , what is the ultimate BOD?arrow_forward
- An effluent stream sample (500 mL) from a metal-working facility contains 0.52 g nickel sulphate. (i) What is the nickel concentration of this effluent stream (in mg/L)? (ii) Would you regard this concentration as suitable for discharge to the local sewage system? (iii) How much total nickel (in kg) leaves the facility per year in this stream if ~1 ML of effluent is produced?arrow_forwardChoose the correct answer Which of following properties of a contaminant are used to examine whether it is a DNAPL? A. Density and viscosity; B. Density and solubility; C. Henry’s law constant; D. all of the above Which of the following is a correct description about stabilization within landfills? A. Stabilization is the process in which gas and leachate in solid waste are produced; B. Stabilization is the process in which inorganics in solid waste is decomposed by microbes; C. Stabilization is the process in which organics in solid waste is decomposed by microbes; D. Stabilization is the process in which heavy metals in solid waste is adsorbed. Ratio of TCE’s partial pressure to TCE’s concentration in water is usually constant at equilibrium. However, the ratio may be changed when which of the following is changed? A. Temperature; B. TCE’s partial pressure; C. TCE’s concentration in water D. all of the above Which of the following can be…arrow_forwardDescribe the features of Municipal solid waste.arrow_forward
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ISBN:9781305635203
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