Muriatic Acid turned Bluish green

[Akragon]

Zinc, magnesium, Iron, cadmium, cobalt, nickel, and tin dissolve in HCL... this came from exposing plated jewelery to HCL.

Would SMB or another substance pull whatever this is out of solution? Or does it only work with gold

 

[Yggdrasil]

Zinc, magnesium, Iron, cadmium, cobalt, nickel, and tin dissolve in HCL... this came from exposing plated jewelery to HCL.

Would SMB or another substance pull whatever this is out of solution? Or does it only work with gold
View attachment 55240

No.
SMB works by the SO₂ which is liberated in acidic environment and that works mainly by reducing Gold.
If I'm not mistaken it will have some effect on some PGMs too.
Why do you want it to precipitate?
Reusing the acid?

 

[Akragon]

No.
SMB works by the SO₂ which is liberated in acidic environment and that works mainly by reducing Gold.
If I'm not mistaken it will have some effect on some PGMs too.
Why do you want it to precipitate?
Reusing the acid?

Experimentation really... familarizing myself with reactions and results of them. I thought it might be copper but it doesn't react much with HCL... so im wondering what the colour is.. and how i might remove it regardless of what happens to the acid... though i might reuse it as well, to see if how much acidity i've lost in said test

 

[Yggdrasil]

Experimentation really... familarizing myself with reactions and results of them. I thought it might be copper but it doesn't react much with HCL... so im wondering what the colour is.. and how i might remove it regardless of what happens to the acid... though i might reuse it as well, to see if how much acidity i've lost in said test

Copper don't dissolve in HCl but with an oxidizer as Oxygen/air it do.
This is the driver for the AP process.
And the color is green.
So if the Copper had a slight oxidation layer, the HCl would dissolve that.

 

[nickvc]

I suspect that Yggdrasil has pointed out the likely color cause , the books state that copper will not dissolve in HCl which is true but even having your solution with air flow around will allow the HCl to absorb some oxygen and so allow some dissolution of copper .
This reaction is why using HCl to wash your precipitated gold powders works so well but it can and will dissolve a little gold as well.

 

[Akragon]

Copper don't dissolve in HCl but with an oxidizer as Oxygen/air it do.
This is the driver for the AP process.
And the color is green.
So if the Copper had a slight oxidation layer, the HCl would dissolve that.

the inside turned into a black powder... the rest was foils

Copper don't dissolve in HCl but with an oxidizer as Oxygen/air it do.
This is the driver for the AP process.
And the color is green.
So if the Copper had a slight oxidation layer, the HCl would dissolve that.

i was left with a black powder... and shells in that bluish solution... i started with this stuff.

 

[Akragon]

Copper don't dissolve in HCl but with an oxidizer as Oxygen/air it do.
This is the driver for the AP process.
And the color is green.
So if the Copper had a slight oxidation layer, the HCl would dissolve that.

the inside turned into a black powder... the rest was foils

I suspect that Yggdrasil has pointed out the likely color cause , the books state that copper will not dissolve in HCl which is true but even having your solution with air flow around will allow the HCl to absorb some oxygen and so allow some dissolution of copper .
This reaction is why using HCl to wash your precipitated gold powders works so well but it can and will dissolve a little gold as well.

perhaps something ironish might cement that copper out?

 

[Yggdrasil]

the inside turned into a black powder... the rest was foils

i was left with a black powder... and shells in that bluish solution... i started with this stuff. View attachment 55241

"This" is at best a very imprecise term.
What is "this"?
What has been done and what did you expect.
There is a plethora of reactions that might have taken place, depending on what was in here and what was done to it.
Have you done the studying we asked you to?

 

[Akragon]

"This" is at best a very imprecise term.
What is "this"?
What has been done and what did you expect.
There is a plethora of reactions that might have taken place, depending on what was in here and what was done to it.
Have you done the studying we asked you to?

of course! This two GF earings i bought for a buck at a thrift store. Had an accident and spilled a bunch of it tonight. I'll post an update... but this is about that blue liquid...

 

[Martijn]

Akragon, the questions you ask and the (lack of) response to certain questions makes me believe you should not be dealing with chemicals and stop experimenting.
I hope it's that you don't understand the finesse of this field enough to respond properly, and it's not a matter of rudeness.
But you keep coming with specific questions you should not be bothering with at this point.
I understand your head must be spinning with all these processes and reactions with exclusions or small differences with big consequences. like mine when i started this.
first get your goal straight> why are you here? > you have some material and want to get the gold off of it.
now study the processes you think or are told are best suited for the task and stick to that process.
Get the basics right and build up from there. Once you have the experience, you can try changing variables to test something.

I think i gave this advice before: do not do anything with chemicals until you have discussed it with us.

Please stop and study hokes and perform her acquaintance tests to get a feeling how chemicals and metals react to each other under different circumstances.
Then test an alloy or a combined piece of metals.

be safe & have fun.

Martijn.

 

[Akragon]

i appreciate the advice... and of course im here for the same reason as everyone else... to learn, and ask questions. And im being as safe as possible, and having a blast while doing it. Obviously my goal is gold, but im no where near actually collecting it... but removing it from its material is happening. Perhaps my questions and answers aren't as eloquent as they should be while talking to you pros... i admit im a babe in the field, but i learn best by doing and asking people more knowledgeable then i am. What i am not going to do is injure myself by jumping into something over my head. thank you for your reply though

 

[GoIdman]

i appreciate the advice... and of course im here for the same reason as everyone else... to learn, and ask questions. And im being as safe as possible, and having a blast while doing it. Obviously my goal is gold, but im no where near actually collecting it... but removing it from its material is happening. Perhaps my questions and answers aren't as eloquent as they should be while talking to you pros... i admit im a babe in the field, but i learn best by doing and asking people more knowledgeable then i am. What i am not going to do is injure myself by jumping into something over my head. thank you for your reply though

Hi,

I understand you are impatient, you want results, right now if possible. I believe all members of this forum were in your shoes at one point, including me. But treating chemicals without respect is wery irresponsalbe.
I am one guy who prefers to stay away as much as possible as i can from acids and chemicals. Not that I don`t understand their risks involved, simply because I value my health and life more than I value gold.

Please don`t take chemicals lightly, don`t experiment with chemicals you are not familiar with or you dont have experience in chemistry. You will damage your health and create a lot of waste.

Read, learn as much as you can, read Hoke`s , ask questions, visit safety section, every one of us is here to help, and there are several experts in lots of different field of expertese.
Meanwhile, start to learn the walue of the input material whatever you choose to work with and focus on one group of material (gold filled scrap, e-waste, etc.)

Start searching for your material and start gathering as much as you can so when you`ll undertand all processes you can safely process your material.

You are not missing out on anything. There is a lot of time for you to learn.

Be safe

Pete

 

[Akragon]

Much appreciated advice... but believe me i am in no hurry at all. I do have a basic chemistry back ground and i've been around hazardous chemicals most of my adult life... i know the dangers involved which is why i haven't bothered with nitric yet... im just not ready and do not have the materials to deal with it as of yet... HCL, while hazardous and if not handled properly can be very dangerous, but its something i can deal with in a limited capacity... my experiments are very small, and waste is also very little and easy to dispose of properly... and yes safety is my first concern above gold... im not looking for profit, its just a new hobby because Chemistry has always fascinated me! Though im glad everyone is warning me of the hazards... it shows this community cares about its members

so thank you to everyone... i might be new to this, but im not new to chemicals or Chemistry

 

[Akragon]

Copper don't dissolve in HCl but with an oxidizer as Oxygen/air it do.
This is the driver for the AP process.
And the color is green.
So if the Copper had a slight oxidation layer, the HCl would dissolve that.

Its really not green, but i could be color blind

Its very blue...

maybe a bit of silver ye think?

 

[Thirmo21]

I would use electrolysis to get that metal out of solution on the stainless steel electrode

 

[Yggdrasil]

Its really not green, but i could be color blind

Its very blue...

maybe a bit of silver ye think?

Silver do not dissolve in HCl.