Author Topic: ph of bio diesel 9.8 tds ppm 0 (Read 6393 times)

alifreddy · « **on:** August 26, 2013, 08:22:35 PM »

runs like its starving of fuel at over 2500 rpm in 3rd seems to be more even and ok at high revs with a splash of petrol 2-3 litres per 40 litres of bio in my van

Its a Vauxhall combo 1.7 di done 223k 20 k mostly on svo and dino diesel only recently started using bio due a to a filter or tank filter blockage

greasemonkey · « **Reply #1 on:** August 26, 2013, 08:39:50 PM »

If you have recently started using Bio, then you almost certainly will experience a fuel filter blocked. Took me 100 miles. Now it blocks every 350, so I guess it's moved a lot of crap off the walls of the tank.
Start by changing the fuel filter.

alifreddy · « **Reply #2 on:** August 26, 2013, 08:41:18 PM »

on its fourth brand new filter. done about 1000 miles

alifreddy · « **Reply #3 on:** August 26, 2013, 08:44:30 PM »

this was bio made in a converted copper hot water tank that used to get very hot just had a tap at the bottom with pipework from the bottom of tank works ok without circulating heated bio round.

I'm just letting another batch I made in my etruk 100 react heated for 1 hour after glyc washing. did 75 litre batch added 14 litres methanol and 640 gs of koh see how it comes out tomorrow

greasemonkey · « **Reply #4 on:** August 26, 2013, 08:46:22 PM »

Quote from: alifreddy on August 26, 2013, 08:41:18 PM

on its fourth brand new filter. done about 1000 miles

Same here. It's still blocking 'um, and I only put 100 litres of bio in it.

alifreddy · « **Reply #5 on:** August 26, 2013, 08:58:47 PM »

am dry washing in hardwood saw fine dust. encouraging to see tds at 0 but still wanna try ion exchange resin as it claims to convert soap to free fatty acids but with a reading of 0tds there is no soap in it??

alifreddy · « **Reply #6 on:** August 26, 2013, 09:01:55 PM »

added a bit of distilled vinegar to bring ph down to just 1 25 litre drum of dry washed bio

Julian · « **Reply #7 on:** August 26, 2013, 11:14:08 PM »

This TDS meter, new to me , Googleing reveals that it measures dissolved solids in water. Is it viable for biodiesel?

And how are you measuring the pH of your bio?

alifreddy · « **Reply #8 on:** August 26, 2013, 11:15:38 PM »

a ph meter pen

alifreddy · « **Reply #9 on:** August 26, 2013, 11:17:23 PM »

also a tds metre pen

julianf · « **Reply #10 on:** August 26, 2013, 11:48:04 PM »

Quote from: alifreddy on August 26, 2013, 11:15:38 PM

a ph meter pen

One that is not designed to work with Aqueous solutions?

alifreddy · « **Reply #11 on:** August 26, 2013, 11:53:24 PM »

only started making bio diesel again and wanted to test it . I've already done a water shake test just wondered if there was anything wrong with my bio that's making my van run funny

I was running my van on wvo so that may be a factor.

I'm still getting a bit of soap in water in shake test after dry washing but a lot less than when I tested at first before wash

Julian · « **Reply #12 on:** August 27, 2013, 12:39:46 AM »

Hmm, I think the pH meter and TDS meter are probably a waste of time when it comes to bio.

I believe the way to test bio for pH is by titration. Similarly for soap try a titrated soap test ... http://www.biopowered.co.uk/wiki/Soap_tests NigelB on here sells the kits.

Have you cut open a filter to see what's blocking it?

Are you leaving the bio to settle for a week or so after manufacture, or just bunging it straight in the car?

therecklessengineer · « **Reply #13 on:** August 27, 2013, 07:30:37 AM »

Yes - the above.

What are the results of the 50/50 test? Post up a photo if you can.

alifreddy · « **Reply #14 on:** August 30, 2013, 12:39:30 PM »

here is a50/50 test of my latest batch of bio before dry washing quite soapy

https://www.facebook.com/photo.php?fbid=293098007495963&set=a.115291161943316.16830.100003872979703&type=1&theater

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ph of bio diesel 9.8 tds ppm 0