Basic Process CHONS + y H₂O → × CH4 + (c-x)CO2 + n NH4 + s H₂S * S x = 1/8 (4ch -20 - 3n - 2s) y = 14 * (4c-h - 20 + 3n+ 3s) No oxygen! 6-3. Using the approximate chemical analyses of refuse-C,,H14,05,N- what is the empirical formula for the organic fraction of refuse? Estimate the theoretical production of methane from this hypothetical compound. 6-4. Describe how your community manages its organic waste. 6-5. Suppose you are a city engineer. An advertisement appears in a trade journal for a new in-vessel compost- ing system that produces methane gas as a valuable end product. Your city manager, who has no technical training, asks you to find out more about this system. You decide to write a letter to the company, Bioscam Inc., requesting more information. What questions would you ask? Write such a letter. 6-6. Assume a rough estimate of MSW composition is as follows: % By Weight Paper (assume all 50 cellulose, CH,Os) Glass 10 Steel Aluminum 10 00020 10 Food waste (assume sugar CH₁₂O) If 10,000 metric tonnes of this mate- rial is placed in a landfill, how much methane gas would theoretically be produced by anaerobic decomposition? 6-7. Suppose a wet mixture of old bread, leaves, and soil is placed in a pile 1 m tall, and a long thermometer is stuck in the middle of the pile. Every other day, the pile is aerated by throwing the mixture into a new pile. Draw a graph showing the temperature in the pile during the first two weeks and explain why these temperature changes occurs. 6-8. An industry operates a landfill into which an organic waste having the formula CHO decays anaerobically. How much methane gas will be generated if the decomposition is complete? Express your answer as "lb gas/lb waste." a. b. Realistically, given the nature of the anaerobic reaction, how much methane gas might actually be produced (approximately)? Why only this much? 6-9. Estimate the production of CO2 and CH during the anaerobic decomposition of ethanol, CHO. 6-10. What would be three good uses for methane collected from a landfill? 6-11. Describe how a Kompogas in-vessel composting system works.
Basic Process CHONS + y H₂O → × CH4 + (c-x)CO2 + n NH4 + s H₂S * S x = 1/8 (4ch -20 - 3n - 2s) y = 14 * (4c-h - 20 + 3n+ 3s) No oxygen! 6-3. Using the approximate chemical analyses of refuse-C,,H14,05,N- what is the empirical formula for the organic fraction of refuse? Estimate the theoretical production of methane from this hypothetical compound. 6-4. Describe how your community manages its organic waste. 6-5. Suppose you are a city engineer. An advertisement appears in a trade journal for a new in-vessel compost- ing system that produces methane gas as a valuable end product. Your city manager, who has no technical training, asks you to find out more about this system. You decide to write a letter to the company, Bioscam Inc., requesting more information. What questions would you ask? Write such a letter. 6-6. Assume a rough estimate of MSW composition is as follows: % By Weight Paper (assume all 50 cellulose, CH,Os) Glass 10 Steel Aluminum 10 00020 10 Food waste (assume sugar CH₁₂O) If 10,000 metric tonnes of this mate- rial is placed in a landfill, how much methane gas would theoretically be produced by anaerobic decomposition? 6-7. Suppose a wet mixture of old bread, leaves, and soil is placed in a pile 1 m tall, and a long thermometer is stuck in the middle of the pile. Every other day, the pile is aerated by throwing the mixture into a new pile. Draw a graph showing the temperature in the pile during the first two weeks and explain why these temperature changes occurs. 6-8. An industry operates a landfill into which an organic waste having the formula CHO decays anaerobically. How much methane gas will be generated if the decomposition is complete? Express your answer as "lb gas/lb waste." a. b. Realistically, given the nature of the anaerobic reaction, how much methane gas might actually be produced (approximately)? Why only this much? 6-9. Estimate the production of CO2 and CH during the anaerobic decomposition of ethanol, CHO. 6-10. What would be three good uses for methane collected from a landfill? 6-11. Describe how a Kompogas in-vessel composting system works.
Materials Science And Engineering Properties
1st Edition
ISBN:9781111988609
Author:Charles Gilmore
Publisher:Charles Gilmore
Chapter14: Material Selection
Section: Chapter Questions
Problem 5ETSQ
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Problem 6-6 (assume the waste is fed to an anaerobic digester, not landfilled). Use the equation given attached. Find x (moles of CH4) for food and paper as well. Then based moles of methane (x), individually calculate methane generated for paper and food waste and then total it. Provide answers in tons.
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