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- Bioprocess Engineering part 2: Steady state and Material Balance
Bioprocess Engineering part 2: Steady state and Material Balance
This video gives a detailed view about the difference between the steady state and equilibrium. It also briefly explains the mass balance equation and its various modifications.
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Video Transcript
Hello all viewers and welcome to instant biology by Dr. Neelav.
Today we will talk about Bio Process Engineering.
In a previous video we started Bio Process Engineering and saw its first lecture.
There we talked about different processes like continuous process, fed batch, batch, semi batch.
Today we will discuss about the study state and what is equilibrium.
Second we will talk about unsteady state.
We will talk about conservation of mass in bioprocess engineering.
After that we will see how to conserve mass.
how to conserve them,
and then we will discuss
what is component balance,
and we will also discuss the types of mass balance.
Finally, although mass balance will not be complete today,
but we will discuss it in the next lecture.
We will discuss which processes are followed
in steady state.
So let's start with steady state and equilibrium.
So what is a steady state?
First of all, it is important to discuss what is a steady state.
So, keep in mind that whenever a reaction is taking place,
if a reaction is taking place,
then during the reaction,
the temperature, volume, mass or pressure of that reaction,
etc. the parameters,
if there is no change visible in them,
see carefully, temperature,
all these parameters of a reaction,
If there is no change in the temperature, volume, mass, and pressure, then the reaction is in a steady state.
Now, let's see what equilibrium is.
You must have seen in chemistry or when we talk about equilibrium constant,
you must have seen it in the case of buffers.
So, if you see, if A plus B is written and it is converting to C plus B,
and the equilibrium constant of this reaction is called K equilibrium,
So, what is the value of K equilibrium?
K equilibrium is equal to C plus D upon A plus B.
This is what happens.
So, if we look at this equation from here,
then what is equilibrium constant or any reaction?
When does it occur in equilibrium?
Any reaction will occur in equilibrium only when
the product and reactant
there is no change in the concentration of the two reactions.
For example, the reaction of concentration C and D
there is no change in the values of A and B.
So, in that reaction,
The reaction is in equilibrium.
If there is a reaction in equilibrium, then it is automatically in steady state.
That means, there is a special condition of steady state.
If the reaction is in equilibrium, then it will automatically be in steady state.
Why do we say this?
