Bioremediation
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Questions and Answers

What are the major benefits of bioremediation?

  • Completely natural process with almost no harmful side effects (correct)
  • Can be carried out in situ with no dangerous transport
  • Requires high energy consumption compared to other methods
  • Requires minimal equipment and energy

    • What factors are essential for effective microbial bioremediation?

  • Low soil moisture to prevent waterlogging
  • A wide pH range to accommodate different microbial growth
  • High oxygen levels to support anaerobic biodegradation
  • Appropriate temperatures for microbial growth and good microbial growth support (correct)

    • What is the best range of pH to ensure good microbial growth for bioremediation?

  • pH around 4 to 5
  • pH around 6.5 to 7.5 (correct)
  • pH around 8 to 9
  • pH around 2 to 3

    • What is the suitable soil moisture level for microbial bioremediation?

    <p>From 50–70% of the water holding capacity</p> Signup and view all the answers

    What should be enough to support aerobic biodegradation in soil or water for microbial bioremediation?

    <p>Oxygen level of 0.4 mg/liter</p> Signup and view all the answers

    Which of the following is a benefit of in situ bioremediation?

    <p>Low cost and low maintenance</p> Signup and view all the answers

    What is a common example of in situ bioremediation?

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

    Under what conditions may ex-situ bioremediation be necessary?

    <p>If the climate is too cold for microbe activity</p> Signup and view all the answers

    What is a key advantage of in situ bioremediation over ex-situ bioremediation?

    <p>Minimal disruption to soil structure</p> Signup and view all the answers

    What is the main mechanism of microbial degradation of petroleum pollutants?

    <p>Catalysis of intracellular enzymes</p> Signup and view all the answers

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