Has anyone used dry scrubbing media to absorbe NOx?

[CR2008]

Hello again all, I have been slowly collecting lab glassware to set up my lab, even though I been reading people using home made nitric acid or "poor man's AR" etc in things like coffee pots etc I choose to use things I am familiar with when I was in school.

So far, I have a chemglass reactor with condensator, a few aspirator bottles with check valves, mixer with controler and a vacuum pump for degassing, gona of getting med sized hotplate and large heating mantle for reactor. I have a 2nd large flask in case I want to use a wet scrubbing process (need to work out packing/absorbtion section). The gold bearing material I am have to work with will be gold filled and occational plated pins.

I would not mind getting a regular fume hood, but I don't know how that would help much if it pushed the acidic gases outside since people live right next door... so I been doing alot of reading on wet scrubbing and dry scrubbing to neutralize acidic gases I would encounter. Also been reading about mixing 35% H202 with 70% Nitric and 100% Ethylene glycol in a certain ratio would drastically cut down on NOx fumes in reaction vessel and also speed up reaction.

Since several commercial gold recovery units use wet scrubbing (AFTEC for example) it would be a viable option and I know ductless fume hoods (they recycle air in the room using different fielters for different needs) and many gas masks also use things like potassium carbonate impregnated activated carbon to absorb acidic gases and react them them, I think it sounds like a good idea to use dry scrubbing.

Some examples of dry scrubbing media are inside the links shown:

http://www.nucon-int.com/carbon/industrial/kinadata.shtml

http://www.filtercorp.co.nz/hydrosil.html

Has anyone used dry scrubbing media to deal with any NO2, HCL and NO2? Thinking of possibly using both wet and dry scrubbing together... my goal to to kill AS MUCH acidic gases produced in all processes through out recovery.


Thanks

 

[Irons]

Why don't you use a reflux condenser and reuse the NO2. It will combine with Water vapor to make Nitric Acid. If you feed in a stream of Oxygen, NO will react to form NO2 then Nitric. Try to recycle reactants as much as possible, especially Nitric, due to the high cost .
Combining organics with oxidizers is really not a very good idea.

 

[Juan Manuel Arcos Frank]

I agree with Irons.

Dry catalytic treatment for acid gases(NOx and SOx) is beyond our scope as PM refiners.This technology is available for power plants.We prevent NOx fumes with H2O2 or wet scrubbing with NaOH,Na2CO3 or urea solutions.

Look,I have a dry/wet combinated process to treat NOx fumes in PM processes,but it is written in spanish.If you want it just let me know.

Kindest Regards.

Manuel

 

[CR2008]

Why don't you use a reflux condenser and reuse the NO2. It will combine with Water vapor to make Nitric Acid. If you feed in a stream of Oxygen, NO will react to form NO2 then Nitric. Try to recycle reactants as much as possible, especially Nitric, due to the high cost .
Combining organics with oxidizers is really not a very good idea.

I forgot to add that the condensator was a reflux type... I got 2 reflux condensators (Friedrich condenser and a "compact" type fisherbrand one that is 1/2 the size

https://fscimage.fishersci.com/images/F1555-01~wn.jpg


My plan was really to have many backups, but I know for sure that I will use an anti acid mask, even though everything will be self contained... just worried about neighboors being affected even though I would have my mask incase of emergency leak/breakage.

Hoping to finish my my set up and start before christmas and I found a few places that offer dry scrubbing media that deals with acidic fumes and gases... I will definatly post all my results in detail so as to get tips on improvments.

 

[CR2008]

I agree with Irons.

Dry catalytic treatment for acid gases(NOx and SOx) is beyond our scope as PM refiners.This technology is available for power plants.We prevent NOx fumes with H2O2 or wet scrubbing with NaOH,Na2CO3 or urea solutions.

Look,I have a dry/wet combinated process to treat NOx fumes in PM processes,but it is written in spanish.If you want it just let me know.

Kindest Regards.

Manuel

Sounds great, I could try to use an online translator, long time since I actually did anything in spanish outside of high school.

 

[Juan Manuel Arcos Frank]

CR2008:

I do not know what is going on with the upload tool because I can not post the filter article,please,give your e mail and I will send it to you.Mine is [email protected]

It seems that you like gas absorption,I have for you an old article about it,olddie but goodie.

Kindest regards.

Manuel

 

[Juan Manuel Arcos Frank]

Now the upload tool works,here they are.

BTW,a few days ago I was called "selfish" by a member...Do I look like a selfish man?

Kindest regards.

Manuel

 

[CR2008]

Now the upload tool works,here they are.

BTW,a few days ago I was called "selfish" by a member...Do I look like a selfish man?

Kindest regards.

Manuel

Thanks.

The other day I also got a fume hood, one of those SMALL ones (wan a new old stock one for $100 on ebay):

that's large enough to fit a small hotplate and do small batches (after I work with the small batches, I am going to move up to using the large larger rxn flask I got), so I would like to make a dry scrubber filter for it using plastic parts like PVC pipes too and link it between the hood and the fan. Also, there is a place to get industrial and lab supplies called "Lab safty supplies," and they have 1/2 face gas masks that use some carts listed for NOx, HF, HCL, SO2 and others that meat OSHA standards etc so that's what I need to get now for safe lab practice.

Looking forward to reading that article, thanks.