No titration page and calculator

[hifly]

ok i think it now has all the boxes that are needed and the maths seems correct.

i would think about changing some of the text, "3/27" i would change to "drop out test" and have a link to the page on the wiki about doing the test, as at present it says 3/27 and then askes you to put in your sample size, i can see some getting confused by this.

it would also be nice to have a bit text for each stage such as.

First stage, start with a base of 5g/l naoh, 7g/l koh, adjust this up or down on following batches to try and achive a 60 to 80% completed reaction from this stage. This will depend on the quality of your oil and will take a few batches for you to get a feel for the oil you use. Currently people are using as little as 3g/l naoh & 4.5g/l koh.


second stage, the base you use for the second stage dose not have to be the same as for stage one, as with the first stage start with 5g/l naoh & 7g/l koh, if you get a quick clear result from the drop out test consider reducing the second stage base on your next batch by 0.5g/l



what do you think?

[Tony]

Happy to make it whatever you want of it Vince

But, I've had a few jars (not your infamous rocketfuel though!) so should be kept away from coding for at least this evening

[Tony]

OK I've changed the 3/27 bit (on both titration and no-titration calculators) - is that easier to understand?

Will add text later.

[Julian]

Link from wiki page to calculator added.

Just a thought ... could the calculator page loose the forum heading and have a "Back to wiki" button at the bottom?  Might make it look more part of the wiki.

[Tony]

Those pages are generated by the forum software so I think the forumy stuff is mandated by that.  I'm sure there is a way but it won't be easy.

On the page itself the line in the description is clickable - though it doesn't show up any differently to normal text.  I'll have a look at changing the link style so it stands out a bit more.

Edit: tweaked - the link is a little more obvious now.

[K.H]

People seem to be ignoring the "adjust the amount" idea,a bit unfair saying the wiki is out of date
http://www.vegetableoildiesel.co.uk/forum/viewthread.php?tid=32695

[Tony]

Maybe rather than 80/20 split on the Meth the second stage should be 20% (or whatever the user configured) of the dropout amount?

[K.H]

Made it down under

http://www.biofuelsforum.com/making_biodiesel/10461-no_titration_method_sodium_mehylate.html

[Tony]

Famous worldwide, I'll roll out the red carpet 

[K.H]

These comments have come up,is this something we (you Tony/Julian  ) can do?

"Thanks for the great info. Will definitely try this when i get the chemicals. For anyone using methylates though what do you put in as the base on the site http://www.biopowered.co.uk/forum/tools/notitration.php shown earlier? Do you also leave the methoxide % at 20%?"

"in fact what we need is a calculator for the wiki where you put in your naoh or koh base you want to use and it gives you the methylate equivilant"

[Carrington]

Evening all do you have the methylate calc's or would you like me to send some over

Paul

[Tony]

Would you mind Paul? If it's wanted we should add it.

[Carrington]

with 30% sodium methylate you times the base amount by 5
So First stage base of 4.5 = 22.5ml x volume , allow 70% of that to be meth so reduce you meth accordingly.

Second stage you can use a base of 4 = 20ml x un reacted oil

I will try and find info for other strength but 30% was the most common


Paul

[Tony]

Presumably Methanol quantity is reduced accordingly, so for higher base amounts less pure Meth is required, as it comes for free with the Methylate?

[Tony]

with 30% sodium methylate you times the base amount by 5
So First stage base of 4.5 = 22.5ml x volume , allow 70% of that to be meth so reduce you meth accordingly.

Second stage you can use a base of 4 = 20ml x un reacted oil

I will try and find info for other strength but 30% was the most common


Paul

According to a post by CountryPaul on VOD:

If you titrate it with 0.1% NaOH solution, the calculation is:

(((titration +base) x litres)/40*54)/30*100)/0.95

Given MW of NaoH = 40, NW of MeONa = 54, density of 30% sodium methylate = 0.95 http://www.kitchen-biodiesel.com/Methoxide_MSDS.pdf).

So using 100L at 1.5 titration as per James gives
((1.5+5) x 100)/40*54 = 2925g of 30% solution
2925g/0.95 = 3080ml (rounded)

Each litre of methylate also gives you only about 830ml of methanol.

The 30*100 term must be for 30% Methylate.  Trouble is I guess the density changes with Methyate percentage so that would also need to be factored in somehow.

I can add it to the calculators but it may be slightly out for anything other than 30% as a result.

I'm not clear on how the 830ml of Methanol is derived either.