[seza]

Hi all,

Great forum, thank you to those that are making it possible,

I hope you can answer my question:
I am trying to conduct a simple experiment following the chloro-alkali process using electrolysis,

Using a suitable membrane between two solutions: Pure Water and fully saturated salt brine,

my understanding is that by applying DC current to the electrodes immersed in the solutions I should get:
:: Sodium Hydroxide + Hydrogen at the container with (-) electrode and
:: Chloride at the (+) side

... all fine cool n dandy but I have few questions:

1. Assuming we pure have NACl in the fully saturated brine what is the OPTIMAL voltage/amperage needed?
2. for a given volume of input material (Brine) what is the output volume/mass of the various materials?
3. I have seen various refs as what electrode materials to use some suggesting Graphite, can I use Stainless Steel on both sides?
4. I have seen a youtube video where a guy use a cotton ball as the separator membrane, is there something better?

Many thanks and keep up the good work,
seza

[Enthalpy]

Hi seza, welcome here!

Is this you first electrolysis? Then, you might prefer something simpler than brine, for instance sodium hydroxide. No separator needed, no secondary reaction.

[seza]

Thank you Ethan,

Salt is widely available and safe to work with,

I am surprised not many people have commented on this,
I might be in the wrong section?

[billnotgatez]

...
I am surprised not many people have commented on this,
...

This forum has a search feature
If you use
Electrolysis
you will get more than 720 posts
If you use
brine Electrolysis
you will get more than 30 posts
if you use
NaCl Electrolysis
you will get more than 90 posts

There is a good chance that you may get some discussion on this thread.

...
Salt is widely available and safe to work with,
...

Have you tried Sodium Carbonate or Sodium Bicarbonate.
Both are widely available and safe to work with

[seza]

Thanks Billinotgatez,

No - I prefer salt as it is freely available is raw form.