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Electrolysis Answered

What is it that affects the speed of electrolysis amperage or voltage? How much of it would I need to electrolyze 100 gallons in a reasonable amount of time?

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So after you acquire the heavy water (if you do) what exactly would you do with it... you wouldnt throw it away...

Getting 1.5 gallons of Heavy Water? That's.... wow! lol, I'm speechless. It's either you're going to have to pay a huge electricity bill, or pay it little by little over the course of months, maybe a few years. You're gonna have to get a lot of generators and a lot of fuel. Maybe buy a large generator that can pump out a few kW? It would be used only for electrolysis, and you could use dozens of separate electrolysis chambers to distribute the power fairly equally. According to some sources, 24 volts is enough, any more will produce heat. Amperage, I'm not so sure.

Think about it, normal water contains about 0.015% deuterium oxide. To produce just a tiny amount will give you a collossal electricity bill!. Anyway pure water is essentially non-conductive, so you need to add something to make it conduct better, one method that has been used is to add a small amount of sodium hydroxide (NaOH). Problem is now that your heavy water will have a lot of sodium ions in it. So now you need to remove these, this is normally done by vacuum distillation. (BTW Heavy water has a boiling point of just about a degree higher than normal light water). Actually its cheaper and easier to buy the stuff.
United Nuclear sell it at about $10 for 10grams, this is far higher purity than any home scientist will manage ('Ultrex' grade (99.999% pure) Deuterium Oxide).

umm 100 Gallons how are you going to store 380 kilos of gas? I think when you intend to only electrolyze the water high voltage helps, however i check this out from an official source because im probably wrong. You should be able to get thousands of volts from a car coil, at a good current , but electrolyzing that much water? it would be much cheaper just to buy the gas.

Im not trying to get the gas. I'm trying to produce heavy water. Heavy water is present in normal water just in very low concentrations. Also heavy water can resist electrolysis so if I electrolyze most of the water I'll be left with a higher concentration of heavy water.

Heavy water? Hmm, are we attempting cold fusion, perchance?

According to Wiki:

Normal water contains less than 200 parts per million of deuterium.

and

To produce pure heavy water by distillation or electrolysis requires a large cascade of stills or electrolysis chambers, and consumes large amounts of power, so the chemical methods are generally preferred. The most important chemical method is the Girdler sulphide process.

The Girdler Sulphide process enriches water to about 15-20% heavy water ( http://en.wikipedia.org/wiki/Girdler_sulfide_process ), and you need to use vacuum distillation ( http://en.wikipedia.org/wiki/Vacuum_distillation ) to get to the >99% needed to make it useful for nuclear applications.

I'm just seeing if it can be done using only electrolysis

Good luck. Any thoughts on what you will do with the heavy water? Sell it? Try cold fusion?

I dont know if it's even possible, and even if it is chances are I don't have accurate enough tools to measure the weight of the water. So I may never know if I actually made heay water

you can seal it in a plasticbag, freeze it, and drop it in water. If it sinks, its heavy water.

ah, frak. this is going to take longer than i thought. Well, maybe if i can get that lightning rod...

wikipedia says use a low voltage

You could do electrolysis with low voltage but you would have to be prepared to want a whole day. If you use high voltage, the metal will shed the rust in a few minutes.

I use electrolysis allot when I am cleaning the rust of tools. When I want to remove the rust off of something large like a saw I use 120 volts and pour in the baking soda (or what ever you use) until I get a sufficient amount of bubbles. If I were to have to guess, I would say you would need about five boxes of balking soda.

I'm sure that electrolysis only works with DC and wall outlets use AC you would need to rectify it in order to do electrolysis.

it really depends how you define work.. if you are doing this with the sole putpose of decomposing water then go ahead. however , since the annode and cathode are constantly changing its no much good for oxidising or reducing metals

Just use a regular wall outlet, but be careful, as you probably already know this can be very dangerous. Make sure you use proper safety so you are not killed

just a note. depending on your location in the world its not always 120 volts. most of the world uses 220 volts i believe, while America and Japan use 120. not sure for each country, so if your in the US, you have 120, anywhere else, might want to check first.

During WW2 the Nazis were making heavy water for a atomic bomb at the Norsk hydro plant in Noroway.The British found out about there plan and made it top priority to destroy it and sent in a crack team of SOE agents to destroy there production. The team accomplished the mission without firing a single shot. Here is the real kicker though. The Nazis would have successfully built the first atomic bomb if it were not for the extermination of all the Jewish scientists. To give you an idea of how much energy is needed to make heavy water the Nazis using all the generators in the hydroplant,and they were barely able to get anything. A word of advise do not even try to make heavy water unless you are a terrorist. In which case the FBI or me would have to kill you :)

Somedays I just don't think my brain is turned on.

Current (amperage).
Of course the current is proportional to the potential driving it (Voltage) as NachoMahma, and higher ionic strength as Sedgewick17, who is adding sodium and hydrocarbonate ions.

To repeat a previous comment: "100 gallons of what?"

L

water mixed with an electrolyte

. It depends on the current. But the current depends on the voltage. . 100 gallons of what?