Author Topic: Bio Sample Tested & Results...... (Read 6732 times)

Bio-boy · « **on:** August 07, 2015, 06:15:40 PM »

Firstly I would like to thank Dave for his support and taking the time to test a sample from my most recent batch.
Needless to say I am more than happy with the results of the testing. The exact test equipment can be confirmed by Dave as I am not 100% sure on the equipment used. However, I can confirm than a Sandy Brae was used to complete the water testing.

Not wishing to delay proceedings the results are as follows:

Soap content:- 10ppm
Water content:- 225ppm

Both of which far exceed the requirements of EN14214. The only thing I could do with testing is for any residual glycerol/methanol.
However, I am extremely chuffed with todays findings.

Once again thanks Dave.

dgs · « **Reply #1 on:** August 07, 2015, 07:11:47 PM »

Just a confirmation of Bio Boy's results as posted above.

As I said to him in my PM, other than samples sent by DavidS and my own (we both use turbo dryers) this sample from BB is the lowest I have ever tested. In fact the result worried me so I immediately tested one of my own samples which was from a batch that is being settled.(not yet dried so expected water level 6 to 700ppm) The result was 600ppm, so I'm pretty sure the Sandy Brae is working accurately.

Soap test was by the usual titration with 0.01N HCL

As I mentioned to BB it would be nice to test one of his samples before passing it through the filter that is supposed to absorb water ( I assume you used this BB) just to see what this filter was doing.

But anyway a really good result. Well done Rob.

Bio-boy · « **Reply #2 on:** August 07, 2015, 07:24:40 PM »

Dave, this sample was completed using 2x spray bars plus an additional feed used when carrying out the processing. I have yet to install a Coalescer but that was going to be my next addition to my plant. However, I'm now debating following these results if the additional outlay would be either needed or necessary.

dgs · « **Reply #3 on:** August 07, 2015, 07:29:56 PM »

Judging by your above results I wouldn't bother.

Manfred · « **Reply #4 on:** August 07, 2015, 07:52:22 PM »

Nice results.

Julian · « **Reply #5 on:** August 07, 2015, 08:02:16 PM »

Since playing with the humidity sensors, I've been wondering just what effect moisture absorption from the atmosphere has on bio samples.

Bio-boy · « **Reply #6 on:** August 07, 2015, 08:14:25 PM »

Quote from: Manfred on August 07, 2015, 07:52:22 PM

Nice results.

It is when you have 575L of the stuff!

Bio-boy · « **Reply #7 on:** August 07, 2015, 08:24:58 PM »

This is where the magic happens.
Purpose built shed with roof top ventilation.

Bio-boy · « **Reply #8 on:** August 07, 2015, 08:35:34 PM »

2 12"x1"spray bars plus an additional 1.5" feed into my reactor at 55 deg for 2 hours all assisted via an extraction fan and ducting.
I run the pump for hour prior to adding the extraction to remove any potential methanol vapours. I appreciate that my processor will not be to everyone tastes but hey ho, such is life. I'm more than happy with the results.

dgs · « **Reply #9 on:** August 07, 2015, 08:54:42 PM »

Quote from: Julian on August 07, 2015, 08:02:16 PM

Since playing with the humidity sensors, I've been wondering just what effect moisture absorption from the atmosphere has on bio samples.

I'm not exactly sure what you mean Julian.

GedsJeep · « **Reply #10 on:** August 08, 2015, 01:32:01 AM »

i collect it, take the chips out and put it in....... $:-\$

Julian · « **Reply #11 on:** August 08, 2015, 09:20:38 AM »

Quote from: dgs on August 07, 2015, 08:54:42 PM

Quote from: Julian on August 07, 2015, 08:02:16 PM
Since playing with the humidity sensors, I've been wondering just what effect moisture absorption from the atmosphere has on bio samples.

I'm not exactly sure what you mean Julian.

If you leave a very dry a sample open to the atmosphere, I strongly suspect that it will absorb ambient moisture.

Bio-boy · « **Reply #12 on:** August 08, 2015, 09:33:16 AM »

Quote from: Julian on August 08, 2015, 09:20:38 AM

Quote from: dgs on August 07, 2015, 08:54:42 PM
Quote from: Julian on August 07, 2015, 08:02:16 PM
Since playing with the humidity sensors, I've been wondering just what effect moisture absorption from the atmosphere has on bio samples.

I'm not exactly sure what you mean Julian.

If you leave a very dry a sample open to the atmosphere, I strongly suspect that it will absorb ambient moisture.

I have read somewhere that Biodiesel is in fact hydroscopic and therefore will absorb ambient moisture if left exposed to the atmosphere.

dgs · « **Reply #13 on:** August 08, 2015, 12:26:20 PM »

With you now julian, I was thinking deeper into it. Something like I thought you were suggesting the absorbed water was somehow chemically changing the bio.

Bio Boy, yes it absorbs a lot of water if left open to the atmosphere. In my semi open top storage I found it was absorbing anything up to 100ppm/ week. Which is why I don't leave it in there anymore.

Julian · « **Reply #14 on:** August 08, 2015, 02:03:16 PM »

No, not deep ... I don't do deep!

I guess the rate depends on ambient humidity and the relative dryness of the bio. Very dry bio might initially absorb atmospheric moisture at quite a fast rate, possibly a logarithmic curve.

I was wondering if this will have an effect on any tests done with humidity sensors.

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