Research Updates Kapila Wadumesthrige 030408 Engine testing Kapila

Research Updates Kapila Wadumesthrige 03/04/08

• Engine testing (Kapila, Sidong, Mark and Nick) – Total run time = 292 hrs – Total testing time ( 30 k. W (60% of Full Load, ULSD) = 205 hrs – 35 hrs of testing remaining ( 4 days) – 500 gallon tank empty – Need about 50 gallons of ULSD – Clean fuel tank for S 8 – Continuous Lube oil analysis – Metal analysis – Fuel Injector system durability testing

Effect of Cetane improvers on oxidation stability of Biodiesel • Antioxidants and cetane improvers act against each other • Cetane improvers in B 20 (ULSD) may help oxidize biodiesel and degradation of antioxidants • Received two cetane improvers – 2 -ethyl-hexyl nitrate (EHN) – di-tert-butyl peroxide (DTBP)) • Stability of antioxidants in the presence of cetane improvers

• ICP testing – All metal standards and solvents received – Compressed air line installed (Mark & Danton) – Methods for Biodiesel and Lube oil analysis

AOCS Abstract 1 Properties of Modified Fatty Acid Methyl Esters Kapila Wadumesthrige, Mark Winston-Galant, Sidong Zeng, Steven O. Salley, K. Y. Simon Ng 1. Modification of double bonds Hydrogenation (higher Ox stability, -HC=CH- Low flow properties) -CH 2 - 0. 4 wt% Ni, 5. 0 wt% H 2 400 k. Pa pressure, 160 C temperature

• Hydroxylation -HC=CHAlkaline KMn. O 4, , 70 -90 C • Epoxidation -HC=CH- -CH(OH)- -CH-(O) -CH-