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Romix
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This black mud of the walls turning yellow so not gold...
[Edited on 27-6-2021 by Romix]
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Romix
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Iron(II) sulfate best precipitant from dirty solutions, all gold dropped out in seconds!!
[Edited on 28-10-2021 by Romix]
 
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Romix
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Dirty, because I didn't filter Iron(II) sulfate before the precipitation.
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Romix
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ALSO toxic gases not coming off.
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Romix
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Had an accident, lucky 5 liter PET bottle was standing in a bath, and all concentrated slightly basic KNO3 escaped in to the drain.
KNO3 crystalized out nicely out of it. Had a go crystalizing it before I went to bed and situation above happened.
Very very very diluted KOH ate a crack at the button of the PET bottle. Now I'll use HDPE canister instead.
That shows that KOH is a much stronger base then NaOH. Was boiling PET in NaOH for hours and only yielded 1 gram of terephthalic acid at the end.
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Romix
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Also bases like NaOH and KOH eats glass too... Once had a jar standing with galvanized with zinc steel bits...
And it ate a crack in that too and leaked out. It's ok to filter something quickly in a borosilicate, but not boiling it in it.
What for? I think I was recovering zinc with aluminium from basic complex.
Unfortunately not tried melting this zinc because of the accident.
Might melt might not. For example tin recovered from chloride salt not melting.
[Edited on 30-10-2021 by Romix]
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Romix
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Ammonia solution much weaker base, stood in PET bottle with a nickel coin in for years with out any cracks.
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Romix
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What about recovering Tin with electrolysis, is Chlorine coming off? You'll need to make a set up to use it some where else in a different reaction.
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Romix
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Lucky, found two good lenses!! Usually you get short and thin 16 bonding wires on a lenses. Here you get that much only on one side of lens. And
there's 3 more sides like that. And wires are longer and thicker.
 
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Romix
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