I was online after I wrote you trying to understand which kind of byproduct are produced electrolyzing sodium chloride, and no Hcl is produced if I have well understood.
Like you say sodium hydroxide, chlorine and sodium hypochlorite.
I red hypochlorite is strongly unstable and it will evaporites very easily.
This is maybe a reason more because heat the solution it would be important.
Unlucky the only possibility I have is boiling the water firstly with everything inside, then electrolyze it.
I made some experiment and a 500ml water in borosilicate glass in an half hour starting from 95C decreases to 50C.
Hypochlorite 5% solution needs not so much heat to evaporate, 50C must be good enough.
In any case I thought that I can boil the solution for at least 5 minutes when I finished electrolysis, avoiding the formation of bacteria, and helping to eventually evaporate sodium hypochlorite that it's already in solution.
Is it not better use sodium carbonate as electrolyte?
We have sodium to avoid gold plating, and we haven't chloride, that if I understand well it's not really needed. Because a gold ion is in this form when it's gold chloride in solution, and when it's a lonely gold ion.
I red sodium carbonate needs very high temperature to transform carbonate ion in CO2, in our case it stays in solution reacting with the formed NaOh. At the end I think we have only sodium carbonate dissolved, plus gold and maltodextrines.
This is only my theory and I have not idea if it's really so..but if it would be so, is it not better?
I was also thinking to use, grape sugar (50% glucose 50% fructose) it must be like karo, and at the same time not citrate, but ascorbic acid. I want try these substances only because I have already everything at home. ..but I have not idea if it's really a good idea. I'm trying to find something online but no research was made with both substances.
For fructose I found one and the temperature must be at least 50%, the ph was also important.
The ph was important also for ascorbic acid, but the littlest particle size was something like 50 nm, in combination with fructose and glucose must be little like if I would use only glucose or only fructose, because they stabilyze much better the particles.
I start to look for alternatives because I can't have temperature higher than 50 C electrolyzing an half hour, starting from 95C. Ascorbic acid needs high Ph, and fructose needs ph and at least 50 C.
Glucose I don't know .