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Thread: Small quantities of Bio-Diesel available, Brisbane southside.

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    Small quantities of Bio-Diesel available, Brisbane southside.

    G'day all,
    New to the forum but I have been brewing for over 15yrs, one of my regular users is going o/seas so I have his share of fuel available for sale. About 120L per week max or any lesser amount.. The fuel is double cracked, washed to a neutral ph and dried and filtered. Any questions feel free to ask or pm me!

    Cheers Gregg.

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    Re: Small quantities of Bio-Diesel available, Brisbane southside.

    Hi Gregg,
    Does your biodiesel pass the 3/27 test?
    What is the cost per litre?
    Last edited by tillyfromparadise; 25th May 2013 at 09:38 PM.

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    Re: Small quantities of Bio-Diesel available, Brisbane southside.

    Hi Tilly,
    Yes it does, I test it at around 25deg. ph is usually around 7., all made from veggie oil (no palm oil) and in cold pour tests it gels at about 0 deg cel.

    Price is $1.00 L.
    Cheers Gregg

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    Re: Small quantities of Bio-Diesel available, Brisbane southside.

    Hi Gregg,
    I am glad to hear your biodiesel passes the 3/27 test.
    I am curious how you are measuring the pH and what you think a pH of 7 tells you about the biodiesel.

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    Re: Small quantities of Bio-Diesel available, Brisbane southside.

    You are being set up, Threegees. Biodiesel can't have a PH [Potential Hydrogen] No water - No PH.
    Most will know that you are referring to the PH of your final wash water.

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    Re: Small quantities of Bio-Diesel available, Brisbane southside.

    Hi 250 downumder,
    Gregg has been making biodiesel for over 15 years.
    He produces biodiesel professonally.
    I am not sure what you mean when you say he is being "set up"
    Obviously Gregg thinks this neutral pH reading is important. He has mentioned it in both posts.

    I am trying to understand how he performes this pH reading and how it is important.
    I have not done a pH measurement in the last 10 years.
    Last edited by tillyfromparadise; 26th May 2013 at 09:55 PM.

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    Re: Small quantities of Bio-Diesel available, Brisbane southside.

    Hi Tilly,
    Please excuse my assumption that you were seeking an explanation as to how one can measure the PH of Bio - knowing that you can't. I certainly consider it important to monitor the PH of my wash water.
    I regularly measure the PH of my wash water to ascertain when all alkaline materials have been washed from the Bio. I tend to use slightly more than the calculated amount of KOH. I like to think that this, together with very aggressive mixing, gives me a more complete reaction [I can't recall the last time I had a batch fail a 3/27 test]. A PH test of the initial wash water is always strongly alkaline, becoming progressively less alkaline with each successive wash. 4 or 5 washes produces neutral effluent. My reasoning is that any alkaline residual together with water [be it dissolved or accumulated from condensation whilst in vehicle fuel tanks] will surely lead to corrosion of fuel system components.
    For this reason, I am very particular with both water washing and thoroughly drying my Bio.

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    Re: Small quantities of Bio-Diesel available, Brisbane southside.

    Hi 250 downumder,
    I tend to not make assumptions.
    Gregg posted that his biodiesel is "washed to a neutral ph" and the "ph is usually around 7". He seemed to be talking about his biodiesel, not the wash water, but it is not clear what he means. That is why I asked him to explain what he means.

    A number of years ago several chemists told me that reading the pH of the wash water tells you nothing of importance. That is probably why it is not an ASTM test or any other recognized biodiesel quality test.
    NaOH/ KOH has a much stronger attraction to water than to biodiesel so for all practical purposes, any NaOH/KOH remaining in the biodiesel that has not already been consumed in the side reaction making soap, is removed in the first wash. From there, checking the pH in subsequent washes is watching the soap being removed.
    Your eyes will also tell you the soap is being removed.

    I used to water wash, but for the last three years I have done the "bubble air through the biodiesel" to remove the methanol and allow the biodiesel to sit for at least a month before using.
    I am having better results with this method than with water washing.
    I Have made this determination by the fact that my cheap inline fuel filters last much longer now than it used to



    Quote Originally Posted by 250downunder View Post
    Hi Tilly,
    Please excuse my assumption that you were seeking an explanation as to how one can measure the PH of Bio - knowing that you can't. I certainly consider it important to monitor the PH of my wash water.
    I regularly measure the PH of my wash water to ascertain when all alkaline materials have been washed from the Bio. I tend to use slightly more than the calculated amount of KOH. I like to think that this, together with very aggressive mixing, gives me a more complete reaction [I can't recall the last time I had a batch fail a 3/27 test]. A PH test of the initial wash water is always strongly alkaline, becoming progressively less alkaline with each successive wash. 4 or 5 washes produces neutral effluent. My reasoning is that any alkaline residual together with water [be it dissolved or accumulated from condensation whilst in vehicle fuel tanks] will surely lead to corrosion of fuel system components.
    For this reason, I am very particular with both water washing and thoroughly drying my Bio.
    Last edited by tillyfromparadise; 26th May 2013 at 11:10 PM.

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    Re: Small quantities of Bio-Diesel available, Brisbane southside.

    We all tend to develop our methods of producing Bio to suit our particular requirements, for some time is important, for others, quality. Some are concerned with inputs, water, power etc. One could question the importance of 3/27 testing considering that many appear to run straight WVO without major problems.
    I have experimented with air washing. I water wash. I Initially fitted pre filters and have removed them, since I had never had one block.

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    Re: Small quantities of Bio-Diesel available, Brisbane southside.

    Hi 250downunder.
    Indeed, the only test I place any importance in at all is the "Clear and Bright Test". That is the only test I ever do to my production biodiesel.
    But then I am not producing biodiesel commercially and selling it to people as Gregg is. When you become a commercial producer quality of product is of paramount concern, it is everything.

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