Author Topic: In processor titrated water wash method (Read 109741 times)

K.H · « **Reply #90 on:** October 09, 2012, 08:09:36 PM »

OK i get where your coming from

,me and Jules have yet to start on a wiki page for this so we will make sure its included.

Julian · « **Reply #91 on:** October 15, 2012, 08:45:06 PM »

We're liking this method!

julesandtash · « **Reply #92 on:** October 15, 2012, 08:58:36 PM »

I take it that you are a fan then Julian.
I never thought I would step back into the water washers corner but I am firmly there now thanks to this method.

Tony · « **Reply #93 on:** October 15, 2012, 09:06:02 PM »

Julian. To think I respected your stand against smilies - and here you are with huge (blue!) scrolling text - it's like walking in on an AA meeting to see empty vodka bottles scattered around the place - I don't know what to think!

Julian · « **Reply #94 on:** October 15, 2012, 09:13:21 PM »

Bit of a late night last night trying to get my head around this method ... minor discrepancies earlier in the post!

I had a bash using concentrated Sulphuric acid and so far it's looking very promising. I used acid ten times stronger that Jules for the titration, but I think I got the sums right (appreciate someone smarter than me checking them over)

I diluted 98% sulphuric to a 1% solution and used that for the titration. This gave a figure of 0.12ml to neutralise 1ml of Bio.

Therefore 0.12 litres per litre. So, for an 80 litre batch I'd need 0.12×80 = 9.6 litres. As I diluted the acid 100:1, I'd need one hundredth of this which is 96ml of concentrated acid.

No emulsions and the wash water isn't quite as clear as it might be. I've done three washes so far, but only 5 litres each time for an 80 litre batch. Wash water has a distinctly yellow tint to it, so Id guess I'm using too little water and running the pump for to long ... one sample has bio accumulating on top of the water.

Just doing one last wash with 10 litres and I'll dry the batch tomorrow.

So far very impressed.

PS. Keith ... I saw the comment you deleted!!!

PS. Tony ... You certainly won't see this sort of frivolity form me often!

K.H · « **Reply #95 on:** October 15, 2012, 09:34:43 PM »

The blue text doesn't show on my phone but shows up as normal writing if I quote it

Head Womble · « **Reply #96 on:** October 15, 2012, 09:45:38 PM »

Hopefully my soap test kit will turn up tomorrow and I can join in the fun.

I'm looking forward to trying this.

1958steveflying · « **Reply #97 on:** October 15, 2012, 10:08:57 PM »

Hoping to do a batch this week so I will be trying it too.. can't wait as I have not water washed in over 4 years but think this method will bring it back.

julesandtash · « **Reply #98 on:** October 15, 2012, 10:38:05 PM »

Julian, very sorry for the slight confusion re the titration fluid.
My fluid is 1ml of acid mixed with 999ml of water to give a 0.1% solution.
I do my titrations now with 10m of biodiesel and slowly drop in the acid. That makes it easier to see the change point.
On my last batch it took 4.5ml of the titration fluid to change the 10ml of bio from blue to the greenish yellow change point.
That works out at 0.45ml per litre.

Trying to do them with just 1ml of the biodiesel and then needing only around 0.5ml of titration fluid is more awkward and gives more chance of errors in reading.
The whole batch was 300 litres so a total of 135ml of acid (pretty low soap concentration to start with - I was quite pleased with that)

I put that acid into 20 litres of water for the acid wash and ran for 20mins then settled for an hour. After draining I did two water washes of 60 litres each in 300 litres of bio. The first had a yellowish hue but the second didn't

Head Womble · « **Reply #99 on:** October 15, 2012, 10:45:27 PM »

Is there a wiki page for this yet, I've had a quick look but can't see one.

julesandtash · « **Reply #100 on:** October 15, 2012, 10:49:16 PM »

No - it seemed best to iron out the wrinkles first then write a definitve guide. This was also why Keith and I thought it best to debut it here rather than on VOD as there is less of a 'it'll never work' culture on here.

Hopefully there will be one soon though.

Carrington · « **Reply #101 on:** October 15, 2012, 11:01:27 PM »

Hi guys
Glad every one is getting one well with the system. Just one thought if anyone would like to try something , a calc I used to use when working with 96% sulphuric was batch size * 0.5% acid, this was before I could titrate the soap and it generally worked but we are talking along time ago so maybe could be a bit out as me and notes don't really get on.

Ps big thanks to Steveflying for helping me with head gasket on truck last week.

Paul
As pointed out below by jule's that it should be 0.05%

julesandtash · « **Reply #102 on:** October 15, 2012, 11:13:32 PM »

0.5% acid by volume sounds a lot - that would be 500ml on a 100 litre batch - 1500ml on a 300 litre batch.
That is ten times what I used on my last batch - 0.05% would be much closer.

Carrington · « **Reply #103 on:** October 15, 2012, 11:17:27 PM »

Sorry that sounds better I will edit my last post , been a long few days and again I have no notes so just going on memory

Julian · « **Reply #104 on:** October 16, 2012, 03:35:26 PM »

My first effort is drying in the processor. I'll do a Nige soap test once cooled.

Meantime here are a couple of photos taken this afternoon ...

This is a sample taken during the first wash with the acid solution. Some 24hrs on the Bio has started to dry at the top of the jar, and not clear from the photo, the water is very clear.

These are samples taken from the first 4 washes whilst draining the water.

I've uploaded the photos to the wiki if you (Jules and Keith) want to use them in the wiki page, feel free.

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In processor titrated water wash method