Re: [Biofuel] changes in titration values

[Golan Shmuel]

hi tom ,bob

 

thanks for the replay

i had already got to the bottom of the tank (i fixed the tap 15-20 cm from the bottom so 150-200 liters always stay at the bottom)

i processed 350 liter during the weekend and steel the titration result was 0.9

i got good separation and good washing

washing test quite strange i got  3 mm third layer that disappeared after few hours

i believe the magic is the high summer temp.

and double settling what i do is first i let the oil to settle in  a55 gal barrel for week

then i pamp 3/4 of the barrel to the  bigger tank that stays up and have no shade at all during all day and i use the oil from there

i will keep fallow and taking titration before settling

all the best 

Golan 

 

On 22/09/06, Thomas Kelly <[EMAIL PROTECTED]> wrote:

Golan,

     I have experienced similar results  .....  not quite as dramatic a difference as yours.

     I don't know why, but it could be that as water settles, some acids may settle with it. Heat definitely helps settle the water out.

     About 6 - 8 months ago I brought home WVO that looked good, but titrated 3.2g lye/L. It also had a peculiar (bad) smell when heated. I washed a sample of the WVO  (w. water) and dried it. It titrated 2.2g lye/L.

     I spoke to the chef at the restaurant. She told me that the WVO came from a fryer they use to fry vegetables.

     I set up 2 settling tanks (200+L) one for the restaurant's french fry oil, the other for their veg fry oil. The veg-fry oil goes in 3 - 3.2  came out 6 weeks later (top 150+ gal) 2.4

 

     Be careful to titrate each time you use the oil. There may be a gradient as you go down the tank. (Increasing titration#)

                    Best of luck.

                    Congratulations on the quality tests

                                          Tom

    

----- Original Message -----

From: Golan Shmuel

To: Biofuel@sustainablelists.org

Sent: Thursday, September 21, 2006 1:46 PM

Subject: [Biofuel] changes in titration values

 

hi!

 

does any of you notice major difference in titration values in the same oil before and after 1-2 months in stalling tank?

 

i have anew 1000 liter black  staling tank outside in the sun (it get very hot here in the summer 38-45 c July Aug)

same  oil that titrated 2.4 for few times before entering the tank titrated 0.9 after few weeks in the tank i titrated over and over again for 8 times i change for fresh indicator twice but i still got the same result 0.9 i just made batch using 3.5+0.9 Noah and it pass the quality test (both methanol&washing) just fine

any idea how this magic works?

 

all the best

Golan

---

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