Author Topic: New to the Forum and to Biodesiel Production (Read 19352 times)

Mark2256 · « **Reply #30 on:** March 10, 2018, 08:48:55 PM »

Hi Dave

Just been reading up on oil in water sensors and came across this I do not know if you have seen it?

http://www.iopscience.iop.org/article/10.1088/1742-6596/776/1/012118/pdf

Regards

Mark

dgs · « **Reply #31 on:** March 10, 2018, 08:56:47 PM »

Hi Mark, the link doesn't seem to work.

Mark2256 · « **Reply #32 on:** March 10, 2018, 09:50:21 PM »

Hi Dave Just Repair link

dgs · « **Reply #33 on:** March 11, 2018, 02:04:35 PM »

Highly interesting Mark, I wonder if Julian has seen this.

Julian · « **Reply #34 on:** March 11, 2018, 02:49:46 PM »

He has ... but unfortunately it's not dealing with measuring moisture content, it's monitoring level in a tank.

It's a similar theory to what we played with, but they are looking at way bigger changes in signal as the level travels up and down the sensor. Our sensor was fully immersed all the time and we were looking for minute changes in capacitance as the moisture content of the liquid changed.

dgs · « **Reply #35 on:** March 11, 2018, 03:44:08 PM »

Oh well, no worries.

Mark2256 · « **Reply #36 on:** March 11, 2018, 08:16:23 PM »

Hi Dave

Thank you for the reply.

Can you tell me who is doing the "FOC water tests by Sandy brae or Karl Fischer for forum members." ?

Regards

Mark

dgs · « **Reply #37 on:** March 11, 2018, 08:34:50 PM »

It is my goodself, just let me know if you want to send a sample and I will pm you my details.

Mark2256 · « **Reply #38 on:** March 11, 2018, 09:18:26 PM »

Hi Dave

Yes please what size sample do you need please?

Regards

Mark

dgs · « **Reply #39 on:** March 12, 2018, 10:10:31 AM »

A 100ml sample is fine. I have pm'd you my details.

Mark2256 · « **Reply #40 on:** March 17, 2018, 12:11:20 PM »

Hi Dave

Just posted 100ml sample to you should arrive Monday or Tuesday.

Regards

Mark

dgs · « **Reply #41 on:** March 17, 2018, 01:24:58 PM »

Good, do you want me to post the results on this thread or pm them to you.

Mark2256 · « **Reply #42 on:** March 17, 2018, 06:28:23 PM »

Hi Dave

Can you post them on the thread please. I have also just had a bit of luck on ebay just won an auction for 75 litres of methanol for £15.00 in Bexley about an hour away from me in the car.

Kind Regards

Mark

dgs · « **Reply #43 on:** March 20, 2018, 05:12:16 PM »

Here are your results Mark;

Appearance - clear and bright

Soap <10ppm

10/90 Warnqvist test 0.7mls dropout

Water 150ppm.

Comments - dropout test. The 10/90 test that most of us use is more accurate than the 3/27 as much more sample is used. When the tube was shaken the methanol phase was cloudy (that nearly always indicates an amount of unreacted oil)

The test can only be read when the methanol phase is clear.

Water test, although I repeated this I don't think from experience it is correct. It is possible that my Calcium Hydride is too old and not as reactive, sorry about that. I will order some more in the next few days.

Mark2256 · « **Reply #44 on:** March 20, 2018, 05:54:16 PM »

Hi Dave

Thank You for running the tests for me.

Is this Biodiesel ok to use or do I need to process again?

Any comments from other members welcome.

Kind Regards

Mark

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