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  1. Replies
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    Re: using glycerine in bio gas digester

    Hi Bueff, I send my potassium glycerol to an A/D facility. As you say it is a 'high energy 'feed and the people that take mine in 1000 to 2000 litre batches are glad to have it.
    When the tanker...
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    Sticky: Re: The Warnqvest Test and re-processing

    Good to know Wesley, thank you.

    I will carry on emulsifying the mono's via my aggressive water wash and thus removing them.
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    Re: Bio Sludge in fuel tank

    I'm wondering if 'gum' in the oil could be anything to do with this. This takes a bit of reading but may explain a little more.

    In the case studied in this paper, a small scale (1 million gallon...
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    Re: Bio Sludge in fuel tank

    I think as long as our methods give us high quality biodiesel then within reason our slightly different ways of processing arn't too significant.

    Just for the record here is a brief description of...
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    Re: Bio Sludge in fuel tank

    Indeed it is. Here, we call it a 5% pre-wash. The idea is that on a 2 stage process where S2 converts something like the residual 20% oil, then the residual glycerol is assumed at something like 5%...
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    Re: Bio Sludge in fuel tank

    I would think the paint stirrer works well. If you have had the fuel stored for a long time and still nothing drops out then this is what we want to achieve.

    As regards those who just settle and...
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    Re: Bio Sludge in fuel tank

    Over the years I have seen plenty of posts reporting glycerol dropping from biodiesel even after water washing. These have been from people that water wash in a 'meek and mild' way, either bubbling...
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    Sticky: Re: The Warnqvest Test and re-processing

    The Warnqvist test is more accurate than most people think. The dropout amount as Tilly rightly reported does overstate the amount of triglycerides, however this is only part of the story.

    In the...
  9. Thread: bio diesel wash

    by smithy
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    2,108

    Re: bio diesel wash

    biopowered (UK) is up and running again, so as promised here is the thread about acid washing making the bio darker. The photo's are on post No 8.

    If any of the admins on here think it is more...
  10. Thread: bio diesel wash

    by smithy
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    2,108

    Re: bio diesel wash

    In simple terms Wesley, does this mean that the use of Magnesol would lighten the colour of biodiesel derived from the acid esterification process.
  11. Thread: bio diesel wash

    by smithy
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    2,108

    Re: bio diesel wash

    The reason I mention mono's is that when I have used acid I sometimes have soap tested between each wash and haven't added acid water (probably 15mls glacial acetic 1n 10 litres of tap water) until...
  12. Thread: bio diesel wash

    by smithy
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    Re: bio diesel wash

    Hi Tilly,
    Thank you for your reply. It doesn't suprise me that when you did your test that you found no colour change. Even though your biodiesel isn't initially water washed, I doubt that after...
  13. Thread: bio diesel wash

    by smithy
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    Re: bio diesel wash

    Thanks for the info Wesley. I have used Magnesol in the past with generally excellent results. After reading your post I'm wondering if the slightly darker colour left in the bio after an acid wash...
  14. Thread: bio diesel wash

    by smithy
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    2,108

    Re: bio diesel wash

    lol, I hope not.
  15. Thread: bio diesel wash

    by smithy
    Replies
    27
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    2,108

    Re: bio diesel wash

    The disadvantage with using acid is that it converts the soap into FFA's. If the starting soap level is unknown then so are the levels of FFA's that are formed. The use of acid also 'splits' any...
  16. Thread: Drying NaOH

    by smithy
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    Re: Drying NaOH

    Hi Wesley and Tony,

    Your experiment Wesley showed a water content of the NaOH of 2.48%

    For those of us that use KOH the reduction in weight after drying would presumably be considerably more....
  17. Thread: Drying NaOH

    by smithy
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    Re: Drying NaOH

    Oh Dear Wesley, be careful. Shame you arn't closer, I have plenty of 1 litre round bottom flasks with the ground tapered tops.

    A few years ago I bought an amount of bankrupt stock from a...
  18. Thread: Drying WVO

    by smithy
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    Re: Drying WVO

    I found the results I did a year ago. KOH methoxide was 3.12% water. After adding an excess of CaO and left to settle the water content was 0.42% These tests were done using Trinity reclaimed...
  19. Thread: Drying NaOH

    by smithy
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    2,535

    Re: Drying NaOH

    Tony,
    I did some water tests on KOH methoxide, both as mixed and dried with CaO, I'll see if I can dig them out.

    As said the calcium soap formed couldn't be washed out (virtually insoluble in...
  20. Thread: Drying WVO

    by smithy
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    Re: Drying WVO

    About a year ago I did a process using KOH methoxide that had beed dried using CaO (quicklime) The yeild was noticeably higher and the amount of Potassium soaps were very low. The big disadvantage...
  21. Thread: Drying WVO

    by smithy
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    4,260

    Re: Drying WVO

    Hi Wesley,

    I think the chemical you are referring to is Sodium (or Potassium) Methylate. As you say it is anhydrous and when mixed with methanol also 'consumes' water that is in the methanol, so...
  22. Thread: Drying WVO

    by smithy
    Replies
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    4,260

    Re: Drying WVO

    hello horseflybiodiesel,

    If you are worried about water in your oil before processing why not conduct a glycerol pre treatment. This will reduce the ffa content (reduce the titration) and lower...
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