How to recover gold with Salt and Vinegar - Part 2

On to part 2 recovering the foils.  There are two ways this is accomplished, with and without Hydrochloric Acid.  In chatting with sreetips on YouTube I found that filtering the light blue liquid clogs the filters.  He suggested using some HCL to dissolve the light blue foam.  I did not get photos of this process.  I used a bit of tap water to wash down the sides of the beaker.  Then I added 100ml of HCL 25ml at a time.  It took all 100ml to dissolve the light blue foam and make it a green liquid.  Then I ran it through a strainer into a 5 gallon bucket.

What was left behind in the beaker.

Take time to wash every piece of trimmed circuit boards to make sure no gold foil remains.  A lot will fall through the strainer.

Keep cleaning the fingers and separate them into different groups.  The clean fingers are now just fiberglass boards and can be discarded.  Pieces with foil will have to be run again. Gold foils in another beaker.

Keep adding more water and wash the gold.  You want to keep all the gold you can in a bucket.  Strain into a beaker with a coffee filter or two paper towels.  Do this until the water is clear.

Once all the blue water is taken off the foils save it for part 3.  Wash the gold foils into a clean container so they can be refined later.

Next time part 3 what to do with the waste liquid.