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  1. Replies
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    Re: Did anyone notice?

    There have been several times over the past week or so when the website has been unavailable
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    Re: Glycerol composition.

    Hi everyone,
    Before Christmas we were discussing caustic stripping and in particular, the instructions in Paul Martin's book "Grown Fuel Biodiesel in practice"
    At the time I did question whether...
  3. Sticky: Re: Members willing to share oil with travelling members

    Hi moenoa,
    Welcome to the forum!!

    I am not on highway 1, however a "small" detour to Paradise will result in all the well settled WVO you can load up.

    Send me a PM when you get to Queensland ...
  4. Re: Members willing to share oil with travelling members

    Hi moenoa,
    Welcome to the forum!!

    I am not on highway 1, however a "small" detour to Paradise will result in all the well settled WVO you can load up.

    Send me a PM when you get to Queensland ...
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    Re: Incomplete reaction advice

    Hi 3DB,
    Can you give us some numbers-
    1. Amount of WVO reacted
    2. Oil Titration
    3. Amount of methanol used per litre of WVO reacted
    4. Amount of NaOH/ KOH used per litre WVO

    I have found...
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    Re: Glycerol composition.

    Hi DavidS,

    Yes, there was a difference.
    Because there is virtually no free CaO in cement to do the drying, it is very likely that one of the minerals produced during the sintering procedure is ...
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    Re: Glycerol composition.

    Hi smithy,

    1% free CaO sounds about right- perhaps a tad higher than desired but close enough.
    As I mentioned in an earlier post in this thread, the MSDS for Grey cement lists the CaO content as...
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    Re: Glycerol composition.

    Hi smithy, The problem here is that you pretend the glycerol pre-wash is not a stage of reaction and you do not include the soap or the glyceine produced during this first stage reaction when you do...
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    Re: Glycerol composition.

    Hi Tony,

    The problem is the continual pretending that the glycerol prewash is not a stage of reaction.
    When the first stage of reaction performed is a glycerol pre wash where neither the amount...
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    Re: Glycerol composition.

    Hi smithy,

    You seem confused.
    We are concerned with the amount of "free CaO" available in our bag of finest Grey cement, NOT the amount of CaO that is used to produce the cement.

    Burning in a...
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    Re: Glycerol composition.

    Hi smithy,

    CaO is unlikely to be a problem as the MSDS for general purpose grey cement lists Calcium Oxide content as 0- 1%...
  12. Frytol or Redband pails/ buckets wanted

    Hi everyone.

    People stopped using frytol and Redband here in sunny ลึก ประเทศอินเด years ago. I still use the pails/ buckets to collect oil in.
    My supply of pails/ buckets is running low.
    I...
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    Re: terrano dying after a few k's

    As I recall, when I wanted clear plastic hose on the output of of my fuel filter I just used clear plastic hose from the hardware. Maybe it was the clear fuel line with the thread matrix through it-...
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    Re: terrano dying after a few k's

    You should be able to get clear plastic hose at all fine hardware stores.

    Be aware that bubbles in the output of your fuel filter hose does not necessarily mean an air leak.
    It could also be a...
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    Re: Glycerol composition.

    Hi smithy,

    Not at all, my warning is to smithw. He does not know who IMB is, you do.
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    Re: Glycerol composition.

    Hi smithw,

    Ah yes, me good mate IMB.
    We certainly had some interesting discussions on the Infopop forum. http://biodiesel.infopop.cc/groupee_common/emoticons/icon_wink.gif

    I strongly caution...
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    Re: Glycerol composition.

    Hi smithw,

    You did not perform a comparison test just comparing it to what you normally achieve.
    In an earlier post to this thread you posted your yield was:
    "Around 300L sometimes 330L...
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    Re: Glycerol composition.

    Hi smithw

    Were you performing a controlled comparison test with two identical batches of WVO taken from the same heating container where the only difference was that one batch used cement dried...
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    Re: Glycerol composition.

    A quick addition-

    If you are performing the titration using NaOH instead of KOH the conversion factor for FFA% using an NaOH titration is:
    FFA% = 0.766X titration number.

    So, if you perform a...
  20. Replies
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    Re: Glycerol composition.

    Hi smithw,

    You are lowering the titration number of the oil by about 4 which is only about 2% FFA.
    2% FFA is about 8.4 litres of your starting total of 420 litres of WVO but you are removing 40-...
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    Re: Glycerol composition.

    Hi smithw,That is an awful lot to lose in caustic stripping

    I personally have never performed caustic stripping, however the articles I have read about caustic stripping seemed to suggest that the...
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    Re: Glycerol composition.

    Hi smithw,

    I used to make a lot of my biodiesel from animal fat/ tallow. The main brands I used were "frytol" and "red band"
    I found that animal fat requires the same reaction procedures and the...
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    Re: Glycerol composition.

    Hi smithy,

    You are correct!
    It did puzzle me that you would admit to having a yield under 100% when performing a reaction http://biodiesel.infopop.cc/groupee_common/emoticons/icon_wink.gif
    ...
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    Re: Glycerol composition.

    Hi smithw,

    It sounds like you are reaction 420 litres of WVO in a single batch.
    Do you mean that when you do these types of reaction you typically start with about 420 litres of WVO and end up...
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    Re: Glycerol composition.

    Hi smithy,

    This is total Incorrect.
    If there is methoxide in the glycerol then a partial reaction of the WVO occurs when you mix the glycerol with the WVO and perform this first stage...
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