Agitated Drum Reactors Quiz
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Questions and Answers

What is the main purpose of rotating drum bioreactors (RDB) mentioned in the text?

  • To ensure mixing of solid medium without forced aeration and agitation (correct)
  • To study the production of aroma compounds in a 3kg drum bioreactor
  • To create shear and damage the structure of the mycelium
  • To regulate the temperature of the room where they are incubated
  • What distinguishes agitated drum reactors from static drum reactors based on the text?

  • Agitated drum reactors use continuous agitation, while static drum reactors use sporadic agitation
  • Agitated drum reactors are used for biofuels production, while static drum reactors are used for aroma compounds production
  • Agitated drum reactors are built in drum-shaped, while static drum reactors use a horizontal cylindrical vessel with a worm inside
  • Agitated drum reactors do not contain baffles inside, while static drum reactors contain baffles (correct)
  • What is the advantage of laboratory-scale bioreactors mentioned in the text?

  • They are based on manual monitoring of important process variables (correct)
  • They are relatively gentle and provide uniform mixing by improving baffle design
  • They offer forced aeration and agitation for better mixing
  • They are used for the production of aroma compounds in a 3kg drum bioreactor
  • What type of equipment is preferred for Solid State Fermentation (SSF) based on the text?

    <p>Erlenmeyer flasks and small perforated trays</p> Signup and view all the answers

    What is the potential problem associated with the agitation in static drum reactors?

    <p>It may lead to problems of shear and damage to the structure of the mycelium</p> Signup and view all the answers

    What is a disadvantage of using Erlenmeyer flasks in laboratory scale reactors?

    <p>Inability to control parameters</p> Signup and view all the answers

    What is the purpose of connecting the column-type bioreactors to air bubblers?

    <p>To adjust the desired amount of air flow</p> Signup and view all the answers

    Why are Erlenmeyer flasks closed using cotton plugs?

    <p>To allow passive aeration</p> Signup and view all the answers

    What is the significance of measuring respirometry in column-type bioreactors?

    <p>To understand the metabolism of microorganisms</p> Signup and view all the answers

    What distinguishes column-type bioreactors from Erlenmeyer flasks in terms of aeration?

    <p>Column-type bioreactors have forced aeration, while Erlenmeyer flasks have passive aeration</p> Signup and view all the answers

    What is the primary disadvantage of column-type bioreactors mentioned in the text?

    <p>Impossibility of withdrawing samples</p> Signup and view all the answers

    Why are column-type bioreactors connected to air bubblers?

    <p>To adjust the amount of air flow for aeration</p> Signup and view all the answers

    What is the significance of aeration adjustment in column-type bioreactors?

    <p>Influence on the metabolism of microorganisms</p> Signup and view all the answers

    What is the key advantage of the bed temperature fermentation in column-type bioreactors?

    <p>Efficient heat removal by the column wall</p> Signup and view all the answers

    What prevents the withdrawal of samples from column-type bioreactors?

    <p>The need for over cultivation before sampling</p> Signup and view all the answers

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