Pharmaceutical Technology I (PT709) Fall 2023-2024 Dr.Radwa Mahrous Filtration Quiz
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Pharmaceutical Technology I (PT709) Fall 2023-2024 Dr.Radwa Mahrous Filtration Quiz

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Questions and Answers

What is the definition of filtration?

  • The accumulation of solids on the filter medium
  • The process of obtaining the liquid filtrate
  • The separation of solid from a fluid or gas by means of a porous medium (correct)
  • The separation of liquid from a solid using a porous medium

    • When is the term 'clarification' applied in the context of filtration?

  • When the properties of the liquid are taken into consideration
  • When the solids do not exceed 1% and filtrate is the primary product (correct)
  • When the aim of the filtration process is to obtain the solid material
  • When the aim is to obtain the liquid filtrate

    • What is the term used for the suspension of solid and liquid to be filtered?

  • Filtrate
  • Clarification
  • Filter cake
  • Slurry (correct)

    • What are some characteristics of the slurry that can affect filtration according to Dr. Radwa Mahrous?

    <p>Density, viscosity, and corrosiveness</p> Signup and view all the answers

    What is the filter medium used to retain the solid called?

    <p>Filter medium</p> Signup and view all the answers

    What is the primary principle of surface filtration?

    <p>Pores or holes in the medium prevent the passage of solids</p> Signup and view all the answers

    What is the equation for the rate of flow in filtration, based on Darcy's law?

    <p>Rate = permeability coefficient * surface area / pressure differential</p> Signup and view all the answers

    How does the area of filter medium impact the volume of filtrate flowing from the filter?

    <p>Increasing area of filter medium increases the volume of filtrate</p> Signup and view all the answers

    How does the permeability coefficient affect the rate of filtration?

    <p>Increasing permeability coefficient increases the rate of filtration</p> Signup and view all the answers

    What factor is proportional to the rate of filtration in relation to pressure?

    <p>Rate of filtration is proportional to the pressure drop</p> Signup and view all the answers

    Filtration is the process of separating gas from solid by means of a porous medium.

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

    Filtration may also be defined as a unit operation in which feed or slurry is forced through a porous medium on which solids are dissolved.

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

    The term 'filtrate' refers to the accumulation of solids on the filter.

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

    Cake formation is the process known as cake formation when the aim of the filtration process is to obtain the liquid filtrate.

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

    Filtration is not typically used for sterilization of solutions that are chemically or physically unstable under heating conditions.

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

    Increasing the thickness of the cake will increase the rate of filtration.

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

    The permeability coefficient is affected by the surface area of the particles and the porosity of the cake.

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

    The total volume of filtrate flowing from the filter will not be affected by the area of the filter medium.

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

    In cake filtration, the filtration is carried out by solids deposited as a clear filtrate.

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

    The rate of filtration is not proportional to the pressure drop.

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

    Study Notes

    Filtration Definition and Process

    • Filtration is the process of separating solid from liquid or gas using a porous medium.
    • Filtration is a unit operation where a feed or slurry is forced through a porous medium, separating solids from liquids.

    Clarification and Filtration

    • The term "clarification" is applied when the goal of filtration is to obtain a clear liquid.

    Slurry Characteristics

    • The characteristics of the slurry (suspension of solid and liquid to be filtered) that affect filtration include factors identified by Dr. Radwa Mahrous.

    Filter Medium

    • The filter medium used to retain solids is called the filter cake.

    Surface Filtration

    • The primary principle of surface filtration is the retention of solids on the filter medium surface.

    Darcy's Law and Filtration Rate

    • The rate of flow in filtration is based on Darcy's law, which can be expressed as an equation.
    • The rate of filtration is proportional to the pressure drop and inversely proportional to the viscosity of the fluid.

    Filter Medium Area and Filtration Rate

    • An increase in the area of the filter medium will increase the volume of filtrate flowing from the filter.

    Permeability Coefficient

    • The permeability coefficient affects the rate of filtration and is influenced by the surface area of particles and the porosity of the cake.

    Cake Formation and Filtration

    • Cake formation is the process of solids accumulating on the filter medium during filtration.
    • Increasing the thickness of the cake will decrease the rate of filtration.

    Sterilization and Filtration

    • Filtration is not typically used for sterilizing solutions that are chemically or physically unstable under heating conditions.

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    Description

    Test your knowledge on filtration in pharmaceutical technology with this quiz. Learn about the separation of solid from a fluid or gas by means of a porous medium, important terms, and unit operations involved in filtration.

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