Anaerobic vs Aerobic Digestion Quiz
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Questions and Answers

What is the primary purpose of anaerobic digestion?

  • Enhance carbon dioxide levels
  • Increase oxygen levels
  • Accelerate composting
  • Produce biogas (correct)
  • Which type of digestion involves the breakdown of organic matter in the presence of oxygen?

  • Aerobic Digestion (correct)
  • Anaerobic Digestion
  • Biogas Digestion
  • Composting Digestion
  • What is a key benefit of temperature control in anaerobic digestion?

  • It prevents the breakdown of organic matter
  • It slows down the process
  • It introduces oxygen for better digestion
  • It increases the production of biogas (correct)
  • Which factor does NOT typically affect anaerobic digestion efficiency?

    <p>Oxygen concentration</p> Signup and view all the answers

    In which type of digestion process does manure composting play a significant role?

    <p>Aerobic Digestion</p> Signup and view all the answers

    Which factor is not considered in creating the 'right' environment for anaerobic digestion?

    <p>Light exposure</p> Signup and view all the answers

    What is the most important toxic material affecting anaerobic digestion?

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

    At what temperature does Thermophilic digestion occur?

    <p>58-60°C</p> Signup and view all the answers

    What type of treatment process depends on microorganisms that require the presence of dissolved free oxygen?

    <p>Aerobic digestion</p> Signup and view all the answers

    How much dissolved free oxygen (DO) is needed for microorganisms in aerobic treatment processes to sustain their metabolic processes?

    <p>3 mg of DO/l</p> Signup and view all the answers

    Why is Thermophilic digestion more rapid compared to Mesophilic digestion?

    <p>Usage of small tanks</p> Signup and view all the answers

    Which of the following factors is essential for sustaining the metabolic processes of microorganisms in aerobic treatment?

    <p>Presence of dissolved free oxygen</p> Signup and view all the answers

    Why is it impractical to consider biogas as an energy source for mobile equipment?

    <p>Inability to be easily dissolved like propane</p> Signup and view all the answers

    What type of treatment process does not rely on the presence of dissolved free oxygen for microorganism activity?

    <p>Anaerobic digestion</p> Signup and view all the answers

    What residence time is required for anaerobic digestion at 35-38°C?

    <p>30 days</p> Signup and view all the answers

    Which process involves microorganisms that do not need oxygen to carry out metabolic functions?

    <p>Anaerobic digestion</p> Signup and view all the answers

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