Silver Cell Anode Filters Part 3

welcome back to part three of the silver cell anode filters refining series of videos this is our DMG precipitate it had some metallic silver in with it I'm trying to remove the silver by dissolving it in hot nitric acid I don't know if that's going to put the DMG precipitate back in solution or not I've got some distilled water here I'm just going to hydrate this material and I'm going to leave that on there and let this cook for a while we're gonna see whether or not I'm going to be able to pull the silver out of there with hot dilute nitric acid it's been on boiling and Nitric for a little while now get some on a filter paper let's do a Stannis test I see green this means Palladium in solution Solutions here a test a little bit of stance chloride make sure we don't have any precious metals in solution here anything in this jar on this jar back here make sure we've got all the precious metals out of these Solutions I don't see anything in there either so these Solutions are devoid of any precious metals I've got silver down here I'll recover that and rinse all the liquid off of it and save it and then and then we'll melt this up into shot and run it through the silver sail for now I'm just going to get these out of the way here's the stuff we boiled in hot glue Nitric to remove the silver looks like most of the silver is gone I don't see a whole bunch of gray in there and all we have left is the precipitate now what we're going to do is drop a sample of that liquid add a little bit of hydrochloric acid I'm going to test for the presence of silver in that solution and as you can see the hydrochloric acid reacts with the silver nitrate and forms silver chloride now I'll use a transfer pipette and pull the remaining settled clear solution off of those solids in the bottom of the beaker I'm just going to use a transfer pipette get everything in that single beaker so that we can get at those solids to filter their amount here's our nice clear solution we'll set that off to the back we're going to wipe up these little spills test it with status chloride and you can see we've got a nice green color which indicates Palladium in solution now we'll pour the solution that we just drew off through a filter there's not really a whole lot to be filtered out here there's not a lot of solids in there this is the solids down on the bottom of the beaker we're going to filter those out now and capture the liquid in a flask and capture the solids in the filter here we're taking some distilled water and rinsing the solids off you can see that the liquid's been pulled through and it's running the filtrate is running clear out of the bottom of that funnel so now we'll transfer the solids they should have precious metals in them we'll transfer that filter into a clean beaker this solution should have a little bit of silver and a little bit of Palladium in it we'll set this back out of the way now I'll add a little bit of hydrochloric acid to our filter with our solids in it now I'm adding six milliliters of nitric acid and then we'll Stir It Up a little bit and put it up on the heat and let this dissolve this is a time lapse by 20 minutes or so and I let the solution boil down to a syrup to drive off all the excess nitric acid now we'll rehydrate the solution with a little bit of hydrochloric acid and then we'll pull it down off the heat and allow it to cool now what I'll do is transfer the solution that has a little bit of silver in it and Palladium mixed together in a clean beaker next we'll reach down in here with some filter paper and get a little bit of the solution on the filled paper test with Stannis I see some orange and green which means platinum and Palladium in that Solution on the left and then this weak solution it has our silver in it and Palladium is mostly Palladium in solution with the silver now we'll add some ice to the aqua Regis solution to cool it off set up our filter and then we'll go ahead and filter the solids out of that aqua regia solution I'm going to pull this funnel off of here I'm going to add this Palladium Solution that's been dissolved in aqua regia into this container Palladium and platinum in here I believe I've got this Beaker marked AR for aqua regia we're going to put a g on this one you've got silver in here I've got some more DMG here has been heated in the microwave a little distilled water let's do this the other way here and add this into this solution see if we can precipitate out Palladium this time I'm not going to add a whole bunch of excess DMG just a little bit and we'll let these react here we go I'm going to get a Stannis test on some of this liquid I don't see anything there and we'll get another one over here on this liquid this is the one over here on the left are on the right rather the one I just dipped that's got some silver in it that one looks like it's still got a little bit of precious metals in it all right let's go ahead and pull this precipitate out this is the one with the silver in it I'm gonna gather it up into a filter here run out of room in the flask empty the flask got into this beaker Beaker has a little bit of copper in it I'm going to cement silver out of this solution that I'm pouring off copper still a little bit of uh Platinum metals in that Solution that's quite all right just trying to gather up our precipitate out of this beaker all right here's our cake all precipitate the DMG precipitate so we'll go ahead and wash this out now real good try to get all the silver that we can rinsed out of this precipitate go ahead this filter out of here this is our dng precipitate to be a little bit of platinum laid him in there I'm going to put another filter in here let's pour this in here so we can cement out on copper we get our precipitate out of this Beaker collected in a filter paper this is the DMG precipitate from the aqua regia solution there is with some distilled water all righty here we go we've got our DMG precipitate it came from our silver solution down in here over here I've got the DMG solution are the dng precipitate that came from the aqua regia add that to a beaker now covered up now we've got most of our Platinum Group Metals should be in these two beakers here I think this is a convenient place and part three this will conclude part three of the silver cell anode filters recovery and refining video thank you for watching

Channel: sreetips

Views: 5,600

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Id: O6DxcBGh8bk

Length: 12min 37sec (757 seconds)

Published: Fri Aug 11 2023