rightmirem
Member
I had a silver refining cell running using 50g/L silver nitrate. The solution got very corrupted with coper and silver chloride - so I decided to start afresh with new silver nitrate. This is regarding the corrupted solution.
The solution certainly had a lot of copper in it (I'm assuming copper nitrate) because I processed some sterling silver. The solution went very blue.
It also developed some silver chloride, probably from water contamination.
I precipitated out the silver by adding 1 part NaCL and 2 part KCl salt, let it settle, and decanted the remaining (still blue) solution off. The silver chloride will be processed later.
I tried to precipitate out the copper by adding sodium bicarbonate, but it did nothing. So at this point, I just want to evaporate the solution to powder in a disposable vessel, and dispose of the copper (and whatever else) properly as solid waste.
QUESTION: Assuming the solution remains below 100c, my understanding is that evaporating the solution produces no airborne nitrates, nor NO2. Just water vapor. Is this correct?
I'm currently evaporating it in a closed, well ventilated room, but I don't have a hood.
Can someone confirm I'm not putting airborne contaminants into the air with this method?
The solution certainly had a lot of copper in it (I'm assuming copper nitrate) because I processed some sterling silver. The solution went very blue.
It also developed some silver chloride, probably from water contamination.
I precipitated out the silver by adding 1 part NaCL and 2 part KCl salt, let it settle, and decanted the remaining (still blue) solution off. The silver chloride will be processed later.
I tried to precipitate out the copper by adding sodium bicarbonate, but it did nothing. So at this point, I just want to evaporate the solution to powder in a disposable vessel, and dispose of the copper (and whatever else) properly as solid waste.
QUESTION: Assuming the solution remains below 100c, my understanding is that evaporating the solution produces no airborne nitrates, nor NO2. Just water vapor. Is this correct?
I'm currently evaporating it in a closed, well ventilated room, but I don't have a hood.
Can someone confirm I'm not putting airborne contaminants into the air with this method?