gold refining from ewaste

[@mandybrown7758]

That hold turned out so beautiful

[@OnsloVest]

Great quality. Loved the video mate

[@andromeda1892]

Appreciate your kind words🙂

[@ColinMuller-q2m]

Amazing video looks so pure that gold well done

[@jjhall68]

Well done video. Great camera work in both quality and angles. I’m surprised you didn’t use a sulfur source early on like H2SO4 or sulfamic acid, to drop lead as lead sulfate so you could filter it out. Is this because of the final precipitation being with Sodium Nitrite?

[@user-azadeen_azi7466]

The white precipitate is sodium chloride resulting from mixing sodium nitrate with hydrochloric acid. The nitrite dissolves and the sodium remains to become potassium chloride.

[@m8imhawk]

There is also the contamination of the tap water instead of distilled, but they all get filtered out pretty well in the result especially when double refined. Free chlorine in the tap wap water isn't an issue, but in the UK there's often hard water components like calcium and magnesium which can form salts similar to the NaCl. Still goes to show how effective aqua regia is

[@LEBANON707]

@@m8imhawk Still the third option would be silver chloride as we are talking about electronic waste (ewaste) with plenty of silver in plated contacts

[@osmia3561]

Looking good! Ammonia boil after the water washing steps can get rid of trace amounts of silver too :)

[@andromeda1892]

💯 correct, if anything ammonia would be the better option for removing silver chloride. Will definitely incorporate it next time.

[@edwardtk1210]

Beautifullest gold powder I have ever seen

[@andromeda1892]

Thank you.😊

[@mandybrown7758]

I find this so interesting and cool

[@andromeda1892]

Thank you for the share.😊

[@palazzo5875]

U ARE VERY GOOD NICE VIDEO I LIKE THE IDEA THAT U DO ALL THE WORK AND TAKE 25% DO U LIVE IN USA ?? CAUSE I NEED UR WORK

[@andromeda1892]

Thank you.🙂 Unfortunately i am in the UK.

[@LEBANON707]

I am a refiner & this is exactly what is NEEDED - it gives a second chance to contaminated semi-refined samples. Any XRF - X Ray Fluorescence assay results would be welcome ! Thank you Sir 💎💎💎

[@andromeda1892]

Thanks for your comment.

[@CICADA2059]

Master degree

[@quinton3997]

Is this what you have been collecting up

[@andromeda1892]

Yes.

[@k.6686]

It's morning and I thought that was some instant coffee powder at the beginning

[@andromeda1892]

Very expensive coffee.😅

[@quinton3997]

I've never seen anyone precipitate gold with sodium nitrate

[@andromeda1892]

Nitrite not nitrate. Two different chemicals.