Juice of lemon and its nutrients

Thread Starter

Lightfire

Joined Oct 5, 2010
690
Hello,

After searching a few days ago, I found out that lemon has a citric acid that can be used to produce an electricity.

Now, I want to get the juice of a lemon and put it in a beaker so that I could put the copper strip and zinc strip there.

But the problem of mine is that I want the color of the juice which is something orange yellowish will turn to a colorless one (I mean in colorless, like a color of a water).

At the same time, I still want its nutrients to be there, especially the citric acid even though the color has gone.

Now, I don't know of any machine that will do the above mentioned. But I hope that there is.

Please help me.

Lightfire
 

Wendy

Joined Mar 24, 2008
23,427
The only thing about lemon juice that works for batteries is the citric acid, the rest is contaminants. If you have money to burn you can buy powered citric acid off the shelf. It is a fine white powder.

Thing to remember about batteries is almost any acid will work. I like citric acid because it is among the safest out there. It is actually an organic chemical that is also an acid.

You won't get much juice out of one of these batteries, but it works.

You can also use coins. Stack a few together of different types, they should be different colors, and then try lighting an LEDs. Because the battery is so weak you will not need resistors. Measure the voltage you generate with your DVM.
 
Last edited:

BillO

Joined Nov 24, 2008
999
Hydrous citric acid is a clear, colorless liquid. You might be able to filter most of the color out of lemon juice, but I imagine that would not be an efficient way to get citric acid. Then you'd need to evaporate it to get it to maximum strength. It's a pretty weak acid at best. I think you'd be better off to buy anhydrous citric acid powder and mix it with water.

Why do you need the 'nutrients' still there? You do not expect to be able to consume this at some point after using it as a battery, do you?
 

Thread Starter

Lightfire

Joined Oct 5, 2010
690
I want a clear liquid with a citric acid so that I could use that as abattery even for a little period of time. :) I can't use the sulfuric acid because i'm afraid and am not allowed. :) I want clear because sulfuric acid's color is clear. pls. help if ok and can be.
ok?

catapult
 

BillO

Joined Nov 24, 2008
999
Sulfuric acid, in high concentration, is actually yellowish.

As stated before, you could try acetic acid (the acid in white vinegar). Much cheaper than citric acid and should be easily available in any drug store/pharmacy/chemist or even photographic supply store as it is used a a fixer/stop bath in black and white photography.

They are both weak acids. Much weaker than sulfuric, but acetic is a bit stronger than citric, more readily available in pure form and would make a better battery.

Even though they are weak acids, both acetic and citric acid can irritate or harm the skin in higher concentrations. Use caution.
 
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