Bedlasky
International Hazard
Posts: 1219
Registered: 15-4-2019
Location: Period 5, group 6
Member Is Offline
Mood: Volatile
|
|
What to do with bismuth waste
Hi.
I tried small scale production of KIO4 by oxidation of KIO3 by NaBiO3. But reaction doesn't proceed well, so I poured this solution in to the solution
of sodium metabisulfite. Yellow solution with white-grey precipitate was formed. Yellow solution should be iodine, precipitate probably some basic
bismuth compound (mix of nitrate and sulfite). What should I do with bismuth waste?
|
|
unionised
International Hazard
Posts: 5102
Registered: 1-11-2003
Location: UK
Member Is Offline
Mood: No Mood
|
|
Precipitate it with excess sodium bicarbonate.
Filter off the solids
(This may be made more complicated by the existence of iodide complexes of bismuth)
Add charcoal and NaOH
Heat until the NaOH melts.
Wait for the reduction.
Cast the metallic bismuth in a suitable mould.
Or just flush it down the toilet.
That's where all the pepto bismol goes.
[Edited on 11-9-20 by unionised]
|
|
MidLifeChemist
Hazard to Others
Posts: 192
Registered: 4-7-2019
Location: West Coast USA
Member Is Offline
Mood: precipitatory
|
|
>> Heat until the NaOH melts. Wait for the reduction. Cast the metallic bismuth in a suitable mould.
I was thinking along the same lines. Why dispose, when you can recycle back into your compound / element collection
|
|
Bedlasky
International Hazard
Posts: 1219
Registered: 15-4-2019
Location: Period 5, group 6
Member Is Offline
Mood: Volatile
|
|
Thanks for suggestions.
I think that recovering 1,26g of bismuth metal (in theory - if NaBiO3 is pure, which I doubt, and if there isn't any loses because of filtration step)
isn't worth it.
|
|