Waste-to-Energy Introduction
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Questions and Answers

What is the primary objective of the circular economy?

  • To promote the disposal of hazardous materials
  • To maximize waste generation
  • To reduce waste to a minimum (correct)
  • To encourage the use of non-renewable resources

    • What is the current economic model described as?

  • Linear economy (correct)
  • Recycling economy
  • Throwaway economy
  • Circular economy

    • What happens to the materials of a product at the end of its life in a circular economy?

  • They are broken down into raw materials
  • They are discarded and sent to landfills
  • They are kept within the economy wherever possible (correct)
  • They are exported to other countries

    • What is the focus of waste-to-energy technologies?

    <p>Converting waste into energy</p> Signup and view all the answers

    What is the main difference between a recycling economy and a circular economy?

    <p>The recycling economy focuses on recycling, while the circular economy focuses on reuse</p> Signup and view all the answers

    What is the goal of the publication 'Waste-to-Energy An Introduction'?

    <p>To present best practices in waste-to-energy technologies</p> Signup and view all the answers

    What is the primary goal of Waste-to-Energy technologies?

    <p>To reduce the volume of waste and produce a useful commodity</p> Signup and view all the answers

    What is the main objective of the Paris Agreement?

    <p>To limit the global temperature increase to below 2 degrees Celsius</p> Signup and view all the answers

    What is the result of Waste-to-Energy processes on the biodegradable fraction of waste?

    <p>It reduces the biodegradable fraction of waste to zero</p> Signup and view all the answers

    What is the primary purpose of mechanically circulating the feedstock in the reactor during wet fermentation?

    <p>To enable microorganisms to come into contact with the organic matter</p> Signup and view all the answers

    What is the purpose of Waste-to-Energy technologies according to the International Energy Agency?

    <p>To transform waste into a useful commodity</p> Signup and view all the answers

    What is the typical moisture level range of organic matter used in dry fermentation?

    <p>50%–80%</p> Signup and view all the answers

    What is the process of converting non-recyclable waste into usable forms of energy?

    <p>Waste-to-Energy (WTE)</p> Signup and view all the answers

    In which part of the reactor is biogas usually collected during wet fermentation?

    <p>The upper section of the reactor</p> Signup and view all the answers

    What is the purpose of the percolate in dry fermentation?

    <p>To enable fermentation as it flows down through the pile</p> Signup and view all the answers

    What is a broader definition of Waste-to-Energy (WTE)?

    <p>Transforming something someone does not want into something someone else needs or wants</p> Signup and view all the answers

    What happens to the percolate after it has flowed through the pile of organic matter in dry fermentation?

    <p>It is drained and recycled</p> Signup and view all the answers

    What is the typical duration of the biogas production process in dry fermentation?

    <p>Several weeks</p> Signup and view all the answers

    What type of waste is generated from crops?

    <p>Agricultural Waste</p> Signup and view all the answers

    What is an example of an energy crop?

    <p>Sugarcane</p> Signup and view all the answers

    What is a biomass resource that can generate biogas?

    <p>Sewage Sludge</p> Signup and view all the answers

    What type of waste is generated from food industry residues and byproducts?

    <p>Industrial Waste</p> Signup and view all the answers

    What is an example of a woody crop?

    <p>Jatropha</p> Signup and view all the answers

    What type of waste is generated from airline industry meals?

    <p>Food Waste</p> Signup and view all the answers

    What is a by-product of electricity generation that can be utilized as thermal energy?

    <p>Heat</p> Signup and view all the answers

    What is the most common method of producing heat from biomass?

    <p>Direct combustion</p> Signup and view all the answers

    Which of the following is a biomass-based power?

    <p>Biomass-fueled CHP</p> Signup and view all the answers

    What is the primary product of anaerobic digestion?

    <p>Biogas</p> Signup and view all the answers

    What is a substitute for gasoline?

    <p>Ethanol</p> Signup and view all the answers

    What is produced through gasification and pyrolysis?

    <p>Syngas</p> Signup and view all the answers

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