@@PickyPlans thank you. I have accepted you. You can share your video links directly to the group if you like

Try find one of these three, in pure form only 1 % would be enough for this purpose. Dodecyltrimethylammonium bromide C14: Tetradecyltrimethylammonium bromide C16: Hexadecyltrimethylammonium bromide

@@PickyPlans Outstanding! Thank you so much! I am in Australia, where are you??

@@PickyPlans What a beautiful country and the most friendly people! I visited many years ago........ And the food YUM YUM

Which boards did you use to depopulate? And how many times do you actually reuse your HCL solution for the same?

@@PickyPlans awesome. Thanks.

@@PickyPlans thank you so much

I’m in same boat.did you find any solution?

Ii can’t buy nitric acid here…any advice?

If you use the HCL method, silver doesn't get dissolved in it, so it should most likely settle out to the bottom either as a fine powder or sludge

🙏

About 3-4 days and up to 7 days in cold place

Yes you can remove it from the list. It's just used to remove the last thin layer of solder on the copper/ Solder forms alloy with copper with few micron thickness ferric nitrate removes that layer

Continu Your Awesome Work!

@@PickyPlans Thanks so much for your prompt reply! I will do a trial just warming it up to say about 80C while I source the Cetrimide. Keep up your great work!

​@@julianalcorso5703. Most backyard refiners, at least those without any greater chemical knowledge, will benefit from doing things the old fashioned way. Remember KISS (Keep It Super Simple). Some processes may take a little longer, but they're simple and the chemicals are cheap. A two step process, first very diluted HCL and then diluted HNO3 will do the job. Electrowinning or carbon reduction will recover the metals. Full leaching process is described in my comment (3 parts) here: kzfaq.info/get/bejne/i9uXotV0yL6pias.html .

@@zero-waste Thanks for the advice! I am a winemaker and therefore have studied and understand organic chemistry but this Ewaste recovery is fairly new to me. I agree with KISS!!! All I am trying to do is remove the remaining solder from several Kg of high-grade telecom pins. as well as the remaining solder from the boards (120Kg). I tried HCL but must have had it way too concentrated (1:1) What strength would you recommend? Once again thanks so much for your help!! BTW I am in Australia, You?

​@@julianalcorso5703. You really should separate fully gold plated pins from those with only partial gold plating, and process them in two batches. Tin behaves odd in many ways. One of them is: If tin solder have been in direct contact with gold plated pins a phenomenon called metal diffusion have occurred. It's best illustrated if you use a cheap soldering iron with a copper tip. The tip becomes inevitably shorter and shorter as the tin solder absorbs a tiny part of the copper tip every time you use it. Therefore, the dissolved solder from fully gold plated pins do contain gold! Metal diffusion is the reason that a two step process is needed for complete removal of solder on Printed Circuit Boards. Many backyard refiners struggle with the last remaining solder on PCBs, i.e. the components will not fall off. A small part of the solder is encapsulated in the diffusion layer of tin/copper. HCl cannot dissolve copper, but HNO3 can. Read my three part comment for tin removal process here: kzfaq.info/get/bejne/i9uXotV0yL6pias.html . Try it and leave a comment if you find it can be either simplified, or improved. After tin removal the electronic components can be sorted for further processing. The bare boards are processed for Bromine extraction, and pyrolyzed yielding raw fuel oil. Finally the copper is separated out. What remains is solely glass fibers, which have so little value that it's just given away for free to a glass recycler. I process any kind of low/med./high grade Printed Circuit Boards. Currently at least 3 tons in stock, but it's way too cold for chemical processes in the winter here; awaiting summer time. During many years I've traveled to many countries visiting numerous small and large recyclers/refiners, but still haven't been in Australia; it's pretty far from Denmark, actually half the way around the globe. However, as an avid sportfisher a trip to The Great Barrier Reef for big black marlin is tempting. If I decide to go to Australia it could indeed be very nice to pass by, and enjoy a glass of delicious Australian Full Bodied red wine while discussing e-waste recycling and recovery processes.

@@zero-waste Once again your link takes me to Omegageek64. A guy in Florida ????