Platinum Recovery from Laboratory Chemical Waste (Pt 2)
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- Опубликовано: 3 окт 2024
- In this video we recover platinum from platinum containing laboratory chemical waste.
This method was heavily drawn from the method at this citation: G.B. Kauffman, L.A. Teter, Inorg. Synth. 7 (1963) 232-236
Now laboratory chemical waste needs to be incinerated first to remove all organic compounds. Chemical methods are not used because they are more expensive and cannot deal with all types of organic residues. Incineration is the cheapest broadly applicable solution. We've already done this in part 1 of this series: • Platinum Recovery from...
Now in this video we process the platinum concentrate powder into platinum metal. We're using 2.4g of platinum concentrate but your numbers may be adjusted accordingly
First we boil the powder with some concentrated hydrochloric acid. About 10-25ml of acid per gram of platinum concentrate. The mixture is then filtered and the residue is subjected to aqua regia digestion. About 4mL of aqua regia (3ml hcl and 1 mL nitric acid) for every gram of platinum concentrate. The mixture is gently heated to drive the reaction. After all the nitrogen oxides have been driven off the mixture is filtered and is again subjected to aqua regia treatment. This is repeated until the filtrate is a constant shade of light yellow or until stannous chloride testing shows no metals dissolving. The residue is then weighed to determine how much metal was dissolved.
The filtrate is distilled to below 10mL and an equal amount of hydrochloric is acid and distilled again. This is repeated until the distillate is clear. This is done to destroy any remaining nitric acid.
The residue solution is then mixed with sodium chloride equal to the amount of metal dissolved. In this case 0.6g. The solution is then gently boiled until dry.
10mL of water is then added and 1g sodium bicarbonate is added per 0.5g of dissolved metal. The solution is again gently heated until boiling and filtered. This process precipitates base metals as their carbonates and hydroxides.
The filtrate is then precipitated with ammonium chloride solution and filtered. The reside of ammonium hexachloroplatinate is washed with 1% ammonium chloride solution and dried.
The ammonium hexachloroplatinate is then incinerated to recover platinum metal.
Related videos:
Part 1 of platinum recovery from laboratory chemical waste: • Platinum Recovery from...
Make chloroplatinic acid: • Make Purified Chloropl...
Chemical resistance of platinum: • Chemical Resistance of...
Make a high temperature heating mantle: • Make a High Temperatur...
Platinum bar dissolving in acid: • Platinum Bar Dissolvin...
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I'm going to be uploading a sponsored ad video in a couple of hours. Yes i know everyone hates ads. But they pay for more science videos. So please no one freakout. I'm letting you know beforehand so it's not an unpleasant surprise... just unpleasant. ;)
On a totally different note, now that i'm more familiar with how to use this 4k camera, would you guys like me to redo my glow stick videos in 4k?
That's a good idea.
Hi
love your videos , your my inspiration in learning chemistry !
"I can't believe I still need to say this after alls these years."
Let me tell you something
The same questions will come again, and again, and again, and again, and again, and again, and again, and again, and again, and again, and again, and again, and again, and again, and again......
If you go through the exact same process and d basically the same things, no. If you'd add something new, yes! :)
I love the ''Pt 2'' pun :):)
you are probably the best chemist around on youtube, hope your channel lasts and dont get flagged like others
0:50.. "i can't believe I have to keep saying this after all these years.".. yes, new people will not know what you said to long time followers of your channel. your caution and due diligence is appreciated..
That and I know my friends and I came up with doofy get-rich schemes based on cartoons and comics when we were like 8 or 10 years old, and people that age (and below) are on the internet now.
I don't even do science, I'm actually pretty terrible at anything that has to do with it, but I still really love to watch your videos :D
Fantastic inorganic chemistry. Thanks for your efforts and information. We are with you.
the tiny filter funnel is so cute
Instead of disclaiming that the process is not economical you might want to embrace it. Buy scap gold (ram clipping) or something on ebay, process the gold and display y1he costs/roi. This way you double tap the potential of your video, getting the chemestry and economics. Glad you're back!
reminds me a lot of cody's lab, actually the only channel that substituted for this channel when it died, glad youre back tho
6:07 Hydrochloric ass addition.
x-D lol
What is the white looking pill that you have in the flask? Is it to help stirring?
5:59 Oh it's that fly again
its igor,his fellow phd scientist
I am in the process of separating platinum from a mixture of palladium and rhodium salts in solution, and I understand how to separate the platinum from the solution by using ammonium chloride. How do I separate the remaining palladium and rhodium from the left over solution? I know you did not cover this in the video, but I was curious. Thanks! +nurdrage
I have metal paladium pure quantity 28kruclips.net/video/WroKnGRMj-gg/видео.html in vietnam 🇻🇳 i sell please message me
Add chlorine gas.😁
Potentially stupid idea regarding chemistry fails: Failure analysis videos? At least for the more complex failures it might provide a lot of entertainment, not to mention a lot of insight into chemistry, after all, results are important, but knowing how and why things can go wrong is equally so. Even if the result is boring, the path to it might be worth discussing.
I'm starting to get the feeling that NurdRage is actually a wizard under the guise of a nurd
Congratulations.
Awesome video, very interesting as always.
hey nerd rage, my serotonin, adrenalin and dopamine levels increase when i see your episodes.
I was refining silver and for some reason platnum salts dropped out of solution with out me trying to drop anything I sow this video when you first posted it and was just checking it out again . I've been plaged by theves so I'm not able to look at it closer all the gold and silver I was working on was stolen again thanks for your help .
So what precious scrap metals are economical to harvest, if any?
All of them. That's why they're "precious" :)
You just have to do it on a scale and a process that's economical.
I think you needed a nap after this one... had to be a huge investment of time.
Thank you though.
If you didn't alter your voice I would have subscribed long ago. Must be the uncanny valley affecting me more than I would like.
no worries. Try turning off the sound and turning on the subtitles. They are manually done so they reflect the audio. That should help with most videos.
That is an actual solution. Subscribed!
This was a really great video series and a ton of work to make happen. For that, I thank you.
I also thank you for keeping it real and adding in humor.....like the fact that total product amounted to $10 of precious metal. I laughed so hard even though I knew the outcome long ahead of time. Your tone just made me bust out laughing.
You always make IT CLEAR it about the science and method and process and not about $$$$$$$.
Great work:)
+NurdRage so when we will have the promised "cool compounds of platinum" you told in one of your vintage platinum and gold in aqua regia btw thanks for the great videos for people who can't be patrons :)
im guessing the super fine platinum powder would make an excellent catalyst
So the brown stuff in a platinum ore is platinium when filtered out of regia then you add soduim bar and water and it will bring it back cause I got the brown powder but I heat it and it turns nugget but my torch is not hot enough I know but I'm in the process of getting one but if I heat it with propane torch in a beaker it will turn black powder and then I can go to town with the new torch I got buckets full of platinium ore to do so I got ya your awesome I know it's got Palladium so I dont want to take it out palladium makes plt beautiful and easy to work with I got palladium gold and I love it it melts pours so easy and palladium pt so I don't hydrocloric the last just leave it there just pt and pd in the ore so I got ya yeah your awesome us nerds need a lil bump on the brain 🧠 🐱
9:15 Yum orange soda!
0 expectations + eduactional video = WIN!
u sound like a science teacher in my school
For a second instead of chemical waste I saw chemical warfare
I saw your thermocouple readout but no probe, where were you reading from and what were they made out of? Since you had aqua regia vapor, I'm guessing it wasn't your standard stainless type-K. Were you using something like an IR temperature sensor pointed at your boiling flask? Side question I've been meaning to ask you, what sort of pressure analysis equipment would you employ in a standard distillation setup like yours? Let's say in setup A, you have just a standard rotary vane pump, and setup B has an actual two-stage turbomolecular fancy-schmancy thingmajing (so you'd need resolution up to the mTorr^-4 or -5 I'd imagine). I've seen Edwards electronic Penning Gauges on ebay, but I have no idea how to finagle them onto a generic second stage average-quality-build surplus-university-unit pump I can grab for a few hundred of eBay.
How much Pd to you think you've got? In August the spot price exploded on the markets for both Pt and Pd (no idea on the Pt, but Pd up makes sense since people are hedging against an OPEC spike, allowing fracking to resume). I'm sure you already know this but a standard oxyacetylene torch will hit > 3500C with no issues, so no need for a contrived (masonry cement to form a chamber with two inlet ports, one piping in fuel, the other O2, and some sort of flow control), or some expensive lab grade furnace setup unless you have other experiments you'll use it with
Keep on keeping on, my good man. Your channel is nature spontaneously emitting the anti-particle of the Real Housewives. (Also lol @ the fact that you have to post a disclaimer to prevent idiots from trying this and coming back to your channel thumbs-downing you with an "THIS WASNT AN ECONOMICALLY PROFITABLE ENDEAVOR -- I HATE YOU NURDRAGE!!!!!!!")
9:20 looks like fanta orange
hello, when you say sodium chloride, are you using table salt ? or is sodium chlorate? i enjoy this video, is it possible this procedure to precipitate palladium too? thank you
5:46 - Fly buddy!
Where do I go to complain that this was a waste of money and I don't care to explore the science?
The end of any Techmoan video :) (It's worth a watch)
lol yeah I'm a fan of his as well.
So
Many
Steps
You can skip a lot if you already know certain aspects of your platinum like if it has base metals as well, organics or precious metals. You can then take out the steps you don't need. This video is presented to show the thorough worst case. Most of the time you won't need to go that far.
@nurdrage you should do a video or series on all the different type of tools you use and have used in the lab, sort of an introduction to chemistry. Could be a good way to make a few interesting videos on the cheap while still teaching
i have been. Some recent videos include: "Lab equipment: Aspirator pump" and "Lab equipment: soxhlet extractor"
You should try to make xenon hexafloutiplantite (if that is how it is pronounced) or at least explain it if it is too expensive
Damn, that was long ! So how can you use platinum in this form ? catalysing agent ?
Anyway, have a nice week !
Thank you for answering =)
Yep, electroplating could be a good use too, might be hard to do...
Anyway I'm curious to see what he will do with it ^^
I see that the bottom of the vial is shiny, did the final step of heating it make the bottom of the vial into a platinum mirror?
Whats up with this voice lol omg; is it from working with volatile chemicals ?
Cant wait for the day we the viewers get paid to watch advertisements
have you considered a graphite crucible?
How would i prevent burning of the graphite crucible while i'm burning the carbon... which the graphite is also made of?
I do understand graphite oxidizes at high temperatures. However, they claim these crucibles are suitable for melting gold, silver and copper which leads me to believe it has a decent lifespan. besides they quite cheap on
Ebay.
I think a porcelain crucible would be more effective in this case. The porcelain itself doesn't oxidize and you can easily look in and tell apart the carbon from the porcelain. You can then stop when the ashes are glowing and carbon has been burned away. With graphite though you see it burning and don't know when the carbon you've been burning is gone or just the graphite is burning. Additionally, the oxidizing graphite generates carbon dioxide, this shields the platinum residues and thus they oxidize slowly if at all. We want oxygen to be able to get and burn the carbon rather than being consumed by the surrounding crucible. Porcelain doesn't react with oxygen so more of it can get in and burn the platinum residues.
Beh, you're the chemist! makes sense, carry on and good luck!
If I did this I'd stick to gold. This process looks frustrating.
Probably unlikely that I'll get a reply, but I have a question for you, I recently got a hotplate stirrer, and I'm curious, you say to heat the solution to 95 degrees, however I don't see you using a temperature probe.
Are you simply setting your hotplate to 95 degrees, or have you worked with it enough that you know what higher temperature to set it at to get the desired temperature in the solution?
My hotplate is a ceramic one which might affect that, and I have heard that the display of the temperature isn't all that accurate, I have also not used it very much yet, I've just been trying to keep water at a steady 80 degrees to try to get a feel for how I need to adjust it, so the evaporation probably plays a big part, but still, having to set the hotplate close to 300 to bring the temperature up to a decent degree, then somewhere around 200 to keep it close to 80 seems a tad counter intuitive to me, at least that it would have to be set so high.
It does also make me wonder what effect it would have on sand or oil baths, but perhaps those would be a bit better as there would be a larger contact area on an rbf than the 1l beaker I currently have.
Probably a tediously low level question unfortunately, I never had the chance to take chemistry, and I don't have the time or money to take classes, but I am starting to get some equipment to explore the science a bit myself.
5:47 Walter White would be losing his mind at your contaminated lab...
Steamflash actual meth labs don't give a fuck about contaminations.
I work with Boron from 50 million yo boninites. I use a column separation process. is there a column separation process that would work better on the PGA group?
Is it possible to somehow make hydrogen peroxide from water?
To make hydrogen peroxide, the easiest way at home is to hydrolyze Ammonium Peroxydisulfate
I believe it will be interesting to demonstrate Belousov-Zhabotinsky Reaction and show the beautiful chemical wave pattern.
It would be cool to see some catalyst production, pt black, etc. Thanx for exploring the science w me😘
will aqua regia dissolve platinum oxide?
yep. although you might have to heat it
You can use platinum mirror on internal side of glass as electrode )
Wouldn't a silver mirror work better (because silver is more conductive) be easier to produce (given it's a standard reaction) and cheaper (for obvious reasons).
Quintinohthree, platinum electrode is inert. it's very important in electrolysis.
nRADRUS I guess that is important in electrolysis, yes.
Idk about "waste of time"... 1 gram of palladium chloride is selling @ $110 these days 😂
My bad... Didn't realize platinum was the focus.
How many orders of magnitude more money did you spend doing this than you got back in platinum? Two? I'd guess two.
5:59.. nice fly'
Again a great video. I'm watching your's for years and need to say: Thank you!
You are great :)
Greez from Germany :)
GIVE US MORE ADS
Actually, I agree with this. If more ads means more videos I'm all for it. We are surrounded/saturated by ads. A few more wont decrease my quality of life, especially if I get more awesome NR videos out of the deal.
337mg, well you told us it wasn't economical, I don't know why I doubted that.
what lab gave u the Pt waste? where could I get it?
excellent video, i made the boo-boo with the nickel steel pot as well, are you still doing videos, love your work
Pirahna solution - burn the carbon in pirahna solution
I actually tried that, didn't work. the platinum metal decomposes the solution before it has time to destroy the carbon.
How about molten potassium nitrate (or chlorate)?
if i'm going to heat it up anyway, i might as well just use air to burn it since it's cheaper to get.
True, but if you suddenly found yourself without it, you'd be emptying your bank to get some more. :)
wow completely forgot about your channel but its cool as hell i remember your glow stick tutorial
Could you recover platinum and a process it into mono-crystalline format chemically?
NurdRage, how do you acquire your nitric acid? Do you make it or buy it?
I watch every video I go get a drink or some thing lol If it makes you a bit that's fine with me You pay no matter where you go to learn Love your videos
How does the stir bar not dissolve in extreme solutions like aqua regia? Does the bar not contamunate the solution? And finally: what do you do if your solution does dissolve the bar and need to stir?
It's coated with PTFE (Teflon) which is very inert, the carbon-fluorine bond is extremely strong and resistant to attack.
NERD RAGE is it possible to extract only titanium from a magnet even if it isnt pure ?
Any experience recovering platinum from catalytic converters?
Lol the little trigger warning at the beginning is kinda useless at this point
Is there enough platinum re-plate your platinum electrode?
I think there is more than enough to replate his electrode, but platinum plating is very difficult and needs specific conditions
Maaaan all the chemicals used. This must be expensive as shit.
D'you have a cold?
Sehr gut! Du erregst meine Aufmerksamkeit mit all deinen Videos! Vielen Dank für das tolle Angebot
would concentrated vinagar work as well?
caros acid could have oxidize all the carbon and leave the precious metals
The platinum causes the acid to decompose faster than it can react with the carbon. Besides, fire is cheaper.
I didn't know that cool.
so, enlight me, plz. where are the "Hundreds of THOUSANDS of dollars" spent here? :)
...??? where did i say that?
NurdRage your last answer to my comment on the fake plat electrodes. shall I expose screenshoots in case you deleted it?
+TheLiasas oh I never said "hundreds of thousands" I said "hundreds to thousands". Completely different range
TheLiasas when you say "shall I expose screenshots" is that a threat?
This was a waste of money. Can i make money doing this?:)
Awesome I always wanted to do this exp.
A pain in the A**
Great video! Keep it up I love your vids
9:37 sparkly and tasty looking
absolutely excellent sir!
Your vids are worth it.
execellent video,
I know you have a Ph.D in inorganic chemistry but do you know these equations actually by heart ?
It takes me about a minute to solve for them. Just like a lot of people are good at math, but it takes them a minute to solve equations without a calculator. Chemistry is a lot easier though. It's very rare to deal with numbers and coefficients above 12.
but you don't actually have to look up for the reactions at all. I mean do you know every bit of chemistry of all elements and molecules ?
The answer to your question is Stoichiometry. Khan academy has some good videos on the subject of stoichiometry and Balancing chemical equations. My understanding is that once you know how the procedure works you can calculate it for any chemical reaction. Sort of like once you know how addition works you can add any numbers together.
But maybe I am wrong. I am not a chemist. I am just someone with a casual interest in chemistry.
Hey! i've got a question, what if you precipitate the platinum from a solution of hexachloroplatinic acid, using some zinc powder as a reducing agent? Because i tried it, and the "platinum" precipitate turned out a black powder, and, i cant tell if its some platinum oxide, or not. I treated the precipitate with concentrate HCl to disolve any unreacted zinc, and then filtered and washed it with water. But, i havent heated it to try and melt it...yet. Any comments, or sugestions are welcome
It's "platinum black"
@@NurdRage Ohhhh, and how can I get it "silvery", or shiny? Thanks by the way!!!!
you need to melt it down. if you want it to come out shiny from solution, need to electroplate it using additives. But that's too complicated for most amateurs, so just melt it.
@@NurdRage thanks!!!!!!!!
I can't be the only one who has no idea what the heck you're talking about, but still find the videos fascinating... Can I? ☺️
Mjrtoo Tube I have next to no idea either, my friend 😅
+Matthew Rasmussen:
I recommend reading about chemistry, about the periodic table of the elements, about atomic theory.
Me too
“Pt 2” HAHAHAHA
While I don't have the funds to support you on Patreon, I must say, that the science alone is interesting enough - no matter the financial loss. For studiyng chemists, this knowledge is especially invaluable - especially in Eastern-Europe, where you can only see this in books. So please, keep doing this stuff. Even if it is not a profitable thing (of course as long as the viewers who can will support you).
w so early love your vids
question what the fuck is that pill that keeps spinning
That is the mixer, he uses a hot plate with a mixer.
www.fishersci.com/shop/products/heidolph-mr-series-magnetic-stirrer-hotplates-4/p-4371490
love all of your videos please make a video on how to extract poppy seed resin from unwashed poppy seeds if you may be interested in seeing the process
Who wants to read a chemistry joke
NVM all the gud ones ar gon
Ba dum tsss
what's the white pill thing that spins in the flask?
teflon stir bar. The glassware sits on top of magnetic stirrer and the "pill" thing is magnetic so it spins from the spinning magnets underneath.