1 / 25

Biodiesel – using waste agricultural products to power school buses Part 1 - Synthesis

Biodiesel – using waste agricultural products to power school buses Part 1 - Synthesis. Presented to CONASTA 59 2010 by the Primary Industry Centre for Science Education (PICSE) Dr Robert Elliott (Dr) David Schaller – Macquarie Oils Ms Anna Paice - UTAS. What is PICSE?.

linore
Download Presentation

Biodiesel – using waste agricultural products to power school buses Part 1 - Synthesis

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Biodiesel – using waste agricultural products to power school busesPart 1 - Synthesis Presented to CONASTA 59 2010 by the Primary Industry Centre for Science Education (PICSE) Dr Robert Elliott (Dr) David Schaller – Macquarie Oils Ms Anna Paice - UTAS

  2. What is PICSE? • Primary Industry Centre for Science Education based at UTAS • National program • 8 Activity Centres • Attracting talented students to study science, suffering from major skills shortages • Teacher PDs, class visits, Industry Placement Scholarship for yr 11/12, Science Camps yr 10, classroom resources, Science Investigation Awards yr 5-12

  3. Industry Placement Scholarship

  4. Learning Outcomes • Make climate debate concrete • Understand carbon neutral fuel • Understand why BD (not straight veg oil) • Chemistry: fats, soap and biodiesel • Poor BD synthesis - leads to investigation, experimentation, development

  5. Connections to curriculum • Renewable fuels • Titration – acid/base • Saponification reaction • Organic compounds – naming • Esterification reaction • Factors effecting reaction rates, completion/equilibrium • Experimental design and process

  6. Driving around the world on straight vegetable oil (SVO) (Biodiesel education project: Oil+Water -> http://www.naturalheroes.tv/vod.html ) http://susty.com/image/drive10.jpg http://nrpw.com/rig.html

  7. Ignition by compression: no spark plug in diesels http://www.youtube.com/watch?v=LcQcfoanCU0&feature=related

  8. High viscosity of straight vegetable oil (SVO) http://bobbybilt-rhino.tripod.com/ http://sciencesquad.questacon.edu.au/activities/falling_marbles.html

  9. Biodiesel vs vegetable oil (SVO) Viscosity --> fine spray Demo

  10. http://biodiesel.infopop.cc/eve/forums/a/tpc/f/159605551/m/725107971http://biodiesel.infopop.cc/eve/forums/a/tpc/f/159605551/m/725107971

  11. Engine damage from using straight vegetable oil (SVO) http://forums.tdiclub.com/showthread.php?t=206587&page=2 http://www.biofuelsforum.com/svo_users/4379-direct_injection_landcruiser_factory_turbo_diesel_engine_insp_after_running_wvo.html

  12. Biodiesel vs vegetable oil (SVO) Flammability (flash point) Whoosh!

  13. Converting fats to biodiesel glycerol TG (Fat) DG MG + + +

  14. Safety Biodiesel is non-toxic, but... making biodiesel... • Flammable – alcohol • Toxic- methanol • Corrosive – caustic soda • Heat/sparks... Image from http://www.odec.ca/projects/2006/bach6k2/discuss.htm

  15. Ethanol-based biodiesel demos? • The original Dr Pepper methanol protocol • Existing small scale ethanol-based lesson • Our adaptation of the Dr. Pepper protocol to ethanol http://www.biodieselcommunity.org/ http://attra.ncat.org/attra-pub/biodiesel.html#making Or Small scale ethanol ref

  16. + H2 + H2O + alcohol Margarine + H2 Soap (FFAs) Biodiesel (FAMEs) Alkanes

  17. Dry alcohol, dry NaOH, dry/fresh oil: <1% FFAs, dry glassware, dry air Soap + H2O + oil + shaking = ??? Have you ever tried to burn soap? Bonus: why doesn't soap burn?

  18. Making the catalyst with drain cleaner + http://www.northcoastchemicals.com.au/catalog/images/0210-2-shU1.JPG

  19. Progress of the transesterification reaction

  20. Burning glycerol makes a gummy mess you don't want in your engine! http://www.impactlab.com/2008/08/14/marshmallow-cancer/ http://jumboempanadas.blogspot.com/2006/10/how-hard-could-it-be-to-make-fluffy.html

  21. 'Pre-wash' helps glycerol separate + 1 Tbs H2O 100 ml + 20ml = approximately 150 ml

  22. Washing with salt water† to remove contaminates: NaOH, ethanol, soap

  23. Modifications to the Dr Pepper demo protocol • Use less toxic ethanol • Dry ethanol using polenta (or rock salt)(Optional?) • Longer reaction times (heat?) • Trigger glycerol separation with H2O prewash • Prevent emulsions with salt washes http://attra.ncat.org/attra-pub/biodiesel.html#making Or Small scale ethanol ref http://www.biodieselcommunity.org/

  24. Bob Elliott’s Biodiesel Protocol Add 30g NaOH to 200mL dry ethanol >95% in a conical flask, mix well. Use a hotplate to dissolve catalyst in the alcohol if required. Use an empty, completely dry 1.25L soft drink bottle or 1L separating funnel. Add 300mL of new vegetable oil (canola, soy bean, olive, poppy, almond etc) then add the dissolved catalyst+alcohol mix. Gently shake by inverting bottle or funnel several times and leave to settle overnight, or compare different reaction times eg 5 mins, 10 mins, 20 mins, 30 mins. Wash the biodiesel

More Related