Naked Science Forum
Non Life Sciences => Physics, Astronomy & Cosmology => Topic started by: scientizscht on 14/04/2019 16:33:40
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Hello
I have a probe that emits O2 inside a water tank.
What is the maximum O2 release rate per surface unit, that will fully dilute/dissolve in the water, without creating bubbles?
Thanks!
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Looking on the bright side, rather than asking for a list of all the real numbers, this time you have chosen to only ask for a list of the odd ones.
As usual, the answer is "it depends".
Conventional wisdom says that, if you are not making bubbles, you are not achieving "the maximum dilution rate for oxygen in water"
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Looking on the bright side, rather than asking for a list of all the real numbers, this time you have chosen to only ask for a list of the odd ones.
As usual, the answer is "it depends".
Conventional wisdom says that, if you are not making bubbles, you are not achieving "the maximum dilution rate for oxygen in water"
Your 'conventional wisdom' is wrong. If you make bubbles, you do not dilute the oxygen, you force it too fast and it forms bubbles which is not diluted oxygen.
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heh :)
It's interesting
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Your 'conventional wisdom' is wrong.
Would you like another guess?
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Your 'conventional wisdom' is wrong.
Would you like another guess?
You are wrong, you should have another guess or maybe try to answer my question?
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You seem not to understand; it's not me that you are saying is wrong, but the people who actually do this sort of thing for a living.
Did you realise that?
By the way, I think you mean dissolved oxygen, rather than diluted.
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You seem not to understand; it's not me that you are saying is wrong, but the people who actually do this sort of thing for a living.
Did you realise that?
By the way, I think you mean dissolved oxygen, rather than diluted.
Who does this for a living?
Indeed I mean dissolve.
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People who, for example, dissolve chlorine in drinking water as a bactericide.
Here's a thought for you to consider.
Imagine a small bubble of oxygen released at the bottom of a deep container of water (with no oxygen currently dissolved in it).
What will happen?
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People who, for example, dissolve chlorine in drinking water as a bactericide.
Here's a thought for you to consider.
Imagine a small bubble of oxygen released at the bottom of a deep container of water (with no oxygen currently dissolved in it).
What will happen?
You never know. It may travel up to the surface of the water. Or it may dissolve somewhere between. Or it may stay stuck at the bottom.
And your conditions are extreme and do not match regular conditions that my question refers to.
Why have a deep container and not have a lab tube? I am pretty sure that the bubble will stay stuck at the bottom of the lab tube. And that's not what I want.
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You never know. It may travel up to the surface of the water. Or it may dissolve somewhere between.
If it's small enough it will dissolve,
And of course, if the oxygen is dissolving then from the bubbles as well as any dissolution taking place at the end of the gas delivery pipe.
So the way to get the fastest rate of dissolving is to use both the bubbles dissolving as well as gas at the dispersion head.
Which is why the people who know what they are talking about use spagring heads to produce lots of small bubbles.
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The smaller the bubble, the quicker it will dissolve. A single molecule will be absorbed almost instantaneously.