What's up with them adding citric acid to VO?

Collecting, filtering and dewatering of WVO SVO vegetable oil. For Biodiesel producers too.

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What's up with them adding citric acid to VO?

Postby hheynow » Fri May 01, 2009 9:40 am

I guess I've been lucky since 98% of my collected oil is rice bran oil with no additives or preservatives added as listed on the cubie label. I acquired a new very busy location that's using canola oil by am a bit concern with what the label says. It reads: Canola oil with TBHQ and citric acid added to help protect flavor and dimethylpolysiloxane, an anti foaming agent added. Should I be at all concerned/worried about the citric acid in this brand of canola (Chef's Quality brand)?

Then on the other hand there are those who pump drums and have no knowledge of the type and brand of oil and do just fine running it in a VO system.
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Postby John Galt » Fri May 01, 2009 3:11 pm

If you are concerned about citric acid or other water soluble contaminants which might be present then mist wash the VO before further processing.
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Postby SunWizard » Fri May 01, 2009 4:50 pm

The amount of additives is so small it probably has no effect, but no one has done any testing I have seen. You could do a test to see if its bad:
TDS meter testing to decide whether to mistwash
Last edited by SunWizard on Fri Sep 24, 2010 11:36 am, edited 1 time in total.
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Postby hheynow » Fri May 01, 2009 5:38 pm

SW I just ordered the same TDS meter you use. I have a feeling the citric acid is of no consequence but using a TDS meter and mist washing is a great idea.
FOR SALE: 1997 Ford F-350 7.3L PSD - Plant Drive kit
1984 Mercedes Euro 300D NA - Custom two tank
Running on used plant oil and biodiesel since May 2006
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Postby BMW Fan » Fri May 01, 2009 6:33 pm

Hi Richard,
you may remember that I did rejuvenate oil for restaurants for some time.
The amount of citric acid is so low and long gone before the oil ends in the collection bin.
I am using this kind of oils for years with no ill effect to any of the engines I am running.
You may get more acids in your oil if the restaurant staff dumps salad dressing in your bin.

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Postby hheynow » Fri May 01, 2009 8:28 pm

BMW Fan wrote:.
You may get more acids in your oil if the restaurant staff dumps salad dressing in your bin.


Now that you mention it that has happened once to me and boy did I every let them know about it. The guilty party was a new waitress who thought oil & vinegar gets dumped in the cubies.
FOR SALE: 1997 Ford F-350 7.3L PSD - Plant Drive kit
1984 Mercedes Euro 300D NA - Custom two tank
Running on used plant oil and biodiesel since May 2006
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Postby hheynow » Mon May 04, 2009 8:23 pm

Just received the TDS meter. What a useful instrument. I just tested my water distiller's water and it's 0 ppm. My filtered well water at the tap is 101 ppm. Tomorrow I'll experiment with the water wash of my finished oil. This outta be good! For that test I'm using the distilled. Thanks SW!
FOR SALE: 1997 Ford F-350 7.3L PSD - Plant Drive kit
1984 Mercedes Euro 300D NA - Custom two tank
Running on used plant oil and biodiesel since May 2006
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Postby hheynow » Mon May 04, 2009 10:19 pm

But if I needed to mist wash a large quantity of oil the 101 ppm filtered tap well water isn't clean enough and using distilled is way too costly. :roll: The tap goes through to two whole house filters, a 10u granulated carbon and a white poly-something 1u. Most of my TDS is iron with a splash of boron.
FOR SALE: 1997 Ford F-350 7.3L PSD - Plant Drive kit
1984 Mercedes Euro 300D NA - Custom two tank
Running on used plant oil and biodiesel since May 2006
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Postby biovindiesel » Tue Jun 16, 2009 8:13 am

Is 101ppm tap really too solid for your mist wash? You're not consuming the product I hope. We'll often make beer with our tap water reaching 140+ppm. Sometimes we mix 50/50 distilled/filtered and get down to 70ppm but that's just when we're feeling ritzy..
~Cv
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Postby HoldOnTight » Sat Sep 04, 2010 6:05 pm

Okay, you have 101 ppm in your tap water. If you mist wash, I'm sure your mist wash water 1st batch will be so much higher. If you do multiple washes, then you are done if you get anywhere close to 100 something.

For comparison, get some diesel from your diesel fuel tank and do a small mist wash with distilled water and see what the dissolved solids reading is with the first wash. Just maybe it will be way above 101!

Just a thought. I would like to know more about the mistwashes...
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