Marble chips are usually white, those do not appear to be marble, which is recrystallized limestone.Would these work?
Marble chips are usually white, those do not appear to be marble, which is recrystallized limestone.Would these work?
Yes but a spherical glass marble has less surface area than a structured packing like bio balls. And the surface area is what helps with retention time. Glass marbles will work if you have nothing else. I have seen whiffle balls used as well as hair curlers and short segments of PVC pipe. Just use whatever is inert and has a lot of surface area.With due respect, but isn't this what we should be going after in order for increased retention
Yes sir, I know I have the marbles but I shared these pebble pics as Ill have to make a purchase. They come cheap. Otherwise Ill have to go miles out towards the other side of the city to get them for free..Marble chips are usually white, those do not appear to be marble, which is recrystallized limestone.
I do have an idea of what you're saying, ive seen it too. Not as in scrubbing though but in fish tanks as bio balls.. Would these ceramic bio balls work?I have seen whiffle balls used as well as hair curlers and short segments of PVC pipe.
The ceramic bio balls you pictured would not work well for a few reasons. First, they are porous because their intent is to have bacterial populations grow on and in the pores. What we are looking for is a non porous substrate that is insoluble and creates a large surface area for the chemical reaction to take place. The porous ceramic bio balls will not be ideal.Would these ceramic bio balls work?
You have the marbles or you have the pebbles which you showed in the photo? If you have no alternative I would use the glass marbles and not the pebbles. I am sure the staff at GRF feels terrible, as I do, that you may have to go out of your way to get glass marbles, but it is what it is.Yes sir, I know I have the marbles but I shared these pebble pics as Ill have to make a purchase. They come cheap. Otherwise Ill have to go miles out towards the other side of the city to get them for free..
Ohh alright alright.. it's very interesting to learn a new thing everyday.First, they are porous because their intent is to have bacterial populations grow on and in the pores. What we are looking for is a non porous substrate that is insoluble and creates a large surface area for the chemical reaction to take place. The porous ceramic bio balls will not be ideal.
I'm awfully grateful for the concern of the staff here as it is... Actually it was the pebbles that I had to go over to the other side but you just saved me that trip!! Although i do have the marbles I still have to find them.You have the marbles or you have the pebbles which you showed in the photo? If you have no alternative I would use the glass marbles and not the pebbles. I am sure the staff at GRF feels terrible, as I do, that you may have to go out of your way to get glass marbles, but it is what it is.
Yes sir you're absolutely correct, that is what i intend to achieve here.Correct me if I am wrong here but is the tubing you are using is to deliver the fume to the bottom of scrubber cylinders? If so, being any longer (by being in a spiral) will not do you any measurable good. The retention time for fume in a column is the time the fume spends in contact with the chemistry in the cylinder not the time it takes to get there.
Ohh alriight.. must've been a mistake. But then I carried out some earlier tests using this, and I noticed a backflow of water. Wouldn't it be possible that the tubes could infact be holding the chemistry inside it as well?The spiral riser I was referring was in an older style gas scrubber used to convert mixed cyanide gasses into sodium cyanide for analysis. The spiral was a glass upside down screw shape that allowed bubbles to spiral upward in the solution and increase the contact time. Different application but the gas being treated is exposed to the solution, your thought would not allow the contact.
Hi 4metals and everyone,I drew this up for making the scrubber out of PVC.
View attachment 63694
If you want I can make up a similar drawing for the vacuum by venturi setup
The drawing shows the tube a bit full.Hi 4metals and everyone,
Please help clearing for me this, if the 6" pvc tube filled with neutralized liquid (Di water / caustic ), and the red tube go down 48" to the bottom of the scrubbing tube, is it first be flooded with caustic/water, will the vacumn could draw this water out of red tube first, then followed by the Nox fume and bubbling through the drilled holds on 5 ways Tee?
Yggdrasil,The drawing shows the tube a bit full.
The idea is that the vacuum draws the fumes into the bottom and then are bubbling up to the surface. What ever fumes are left will go out the top and over to the next tube or vacuum pump.
If you run a water driven venturi system the vacuum end is not important.Yggdrasil,
First, thank you for replying.
In big picture, i could understand how to fume being sucked out and passing the flask train. But my stucking point is, when the pump stop working, there is no vacumn at all, the red pipes (1/2") those go down at the bottom, will being flooded back physically for a length of nearly 48" height of the 6" pipe (x3 1/2" red pipes in x3 6" pipes). I've just wondered when starting the pump in the next day of work, will the vacumn could easily clear out the flooded liquids first, then come after NOx fume in bubbles form.
Sorry if i could not make my question more clear
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