Presented By, M.Shree Priyanga (092BT143) R.Sindhu (092BT144) Date:11 th,June,2012. BASICS & CHEMISTRY OF BIODIESEL

Basics Methyl or ethyl ester of fatty acid Jatropha curcas, Pongamia Pinnata, Calophyllum inophyllum, Hevca brasiliensis etc. Blending Clean fuel Substantial Reduction Cetane Number Specifications

contd B20 US Environmental protection agency B100 Department of Energy and Transportation of US Reduction in particulate matter (25-50%) Marginal increase in Nitrous Oxide Production – 100 million Gallons,reduction of taxes Raw materials –Europe –Sunflower, Rape seed USA- Soya Thailand-Palm Oil

contd Viscosity – 1.9 – 6 centi stokes Biodiesel Blend –USA 20%, European countries 5-15% Germany filling stations Benefits It is safe to handle, store, transport Nontoxic and Biodegradable High flash point Reduces air toxic Engine Performance

Biodiesel Chemistry  Biodiesel: Industrial production – “cracking of petroleum”  Vegetable oil: three of those long chains are stuck onto a glycerin backbone  Diesel fuel: one long chain of carbon atoms studded with hydrogen atoms  Biodiesel chemistry: breaking those long carbon chains off the glycerin backbone

Biodiesel Chemistry Transesterification  Triglyceride Fats and oils  Glycerin, or Glycerol, is primarily found in nature as the linking chemical in fats  Fats are also known as triglycerides  Three hydrocarbon chains linked to one glycerin molecule

Biodiesel Chemistry Transesterification Steps involved: methanol molecules a catalyst –bridge chemical gap catalyst breaks bonds glycerin and the three fatty acids methanol binds to fatty acids forms biodiesel and also a crude glycerin

Biodiesel Chemistry: Biodiesel Production oil + methanol + KOH [at 50 ◦c] Bioreactor  Settling  Washing  Purification  Evaporation PURE BIODIESEL Noted :  Water Saponification –FFA ↓ water -↑ biodiesel  Catalyst Twice the volume of oil  Reversible balance Glycerine BIODIESEL Methanol Recovery Evaporation