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Biological & Agricultural Engineering
BP 419
Moscow, ID 83844-0904
Tel.: (208) 885-7626
Fax: (208) 885-7908

biodiesel@uidaho.edu

 

Quick Links College of Agricultural and Life Sciences University of Idaho Extension Idaho Ag Experiment Station University of Idaho Link Descriptions

ISU

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Technical Questions: A Sample of Questions Directed to the

University of Idaho Biodiesel Education Project 

(Click on questions for the answers)

1. How much canola oil can be squeezed out of canola seeds?    

2. How much bio-diesel is produced from 1 liter of unused vegetable oil and how much ethanol (or wood-based methanol) is required to make this amount of bio-diesel?     

3. I made a batch of biodiesel from used frying oil.  After the reaction, when I heated the fuel to drive off the excess alcohol, I found that a translucent slime was formed.  What is happening?

4. Will 100% biodiesel work without any consequences for the engine other than cold weather viscosity problems? 

5. I pumped the last bit of biodiesel from my storage barrel and I noticed that the fuel contained a large number of small white flakes.  The temperature was in the 80’s, so I would not expect that the fuel was starting to gel.  What are these flakes?

6. How do biodiesel’s miles per gallon compare to the miles per gallon (mpg) of regular diesel?

7. Can I make biodiesel on a small scale?

8. Do I have to register my fuel with the EPA for private and non-commercial use?   

9. If I want to set up a small facility and sell biodiesel can I do this?  What are the testing requirements and procedures?  Does every batch have to be tested?  Do I have to be a member of NBB (paying the $5,000 yearly membership fee)?  Or can I just meet ASTM standards?  Does my fuel have to be registered with the EPA? 

10. An organization near me is producing biodiesel and I have learned that one of the by- products from this process is glycerine, aka glycerin glycerol (C3H8O3) – could you confirm for me that this is what the by-product really is (from processing canola or some such material) and whether it is a suitable co-digestive in an agricultural anaerobic digestion process? And approximately what volume of glycerine is generated from the production of how much biodiesel?

11.  Can I use biodiesel in my 1984 Mercedes TD300?

12. We have a client who got an interesting test result back on some of their biodiesel.  The copper corrosion test came back as 1A, the ASTM method specifies max of 3.  Any idea what that means?

13. Can you provide any technical information on use of fish oil as a feedstock?  My neighbor and I tried to use it and the reaction didn't seem to work as no separation occurred as is usual with vegetable oil.  Also, I have read press articles that seem to say that fish oil can be used blended straight with regular diesel to run and engine?  Is this true?   We are interested in fish oil as a feedstock due to a theory that it will have much better cold flow properties.  Thank you for your help.

14. Can I change from diesel fuel to biodiesel without any physical problems or damage to my engine if I have a 20 year old vehicle?

15. Does biodiesel reduce engine wear?

16.  What is the shelf life for biodiesel?

17. Is there a recommended percentage of biodiesel to use with diesel fuel?

18. Will biodiesel void the warranty on my car?

19. Can algae grow in biodiesel?

20.  How should biodiesel and diesel fuel be blended?

21. Can biodiesel be made using ethanol?

22. Can you supply me with plans for a biodiesel plant?