FTIR Calibration CurvesFTIR Calibration CurvesOxidative Stability of SBO-based biodieselOxidative Stability of SBO-based biodiesel

Project Status ReportRhet de Guzman and Haiying Tang

03/11/2008

FTIR Calibration Curves• NextDiesel SBO-based biodiesel• NextDiesel WG-based biodiesel• BDI YG-based biodiesel

Test Blends:– RKA ULSD , B2, B5, B10, B15, B20, and B25

FTIR Detection – SBO BlendsULSD

SBO

FTIR Detection – SBO BlendsULSD

SBO

1. Aliphatic HC2. Alkyl grp – gen3. Alkyl long chain4. Carbonyl cmpd5. Carbonyl cmpd – w/

possibility of ester or ketone

1,2,31,2,3

3

2,3

4,55 3

FTIR Detection – SBO BlendsULSD

SBO

FTIR Detection – SBO BlendsULSD

SBO

FTIR Detection – SBO BlendsULSD

FTIR Detection – SBO BlendsULSD

FTIR Detection – SBO BlendsULSD

SBO

FTIR Detection – SBO Blends

FTIR Calibration Curve – NextDiesel SBO Blends

FTIR Calibration Curve – NextDiesel WG Blends

FTIR Calibration Curve – BDI YG Blends

FTIR Calibration Curves

FTIR Detection

CEF B20 Test Samples

Test Area Result Result in% SBO test

1.5019 0.214835 21.48% 1

1.5017 0.214807 21.48% 2

1.5151 0.21673 21.67% 3

1.4596 0.208763 20.88% 4

1.453 0.207815 20.78% 5

y = 6.9658x + 0.0054 Y=Area, x=blend %

X= (Area – 0.0054)/6.9658

SBO-based biodiesel Oxidative Stability• Anti-oxidants:

1) α-T - α-Tocopherol2) IB - IONOL BF2003) BHT - 2,6-Di-tert-butyl-4-methylphenol4) BHA - FCC Butylated hydroxyanisole, 98.5+% FCC5) DTBHQ - 2,5-Di-tert-Butyl-hydroquinone, 99%6) TBHQ – tert-Butylhydroquinone, 97%7) PG - Propyll Gallate8) PY – Pyrogallol, 99%

Anti-oxidants in 1000ppm, 500ppm and 250ppm concentrations

SBO-based biodiesel Oxidative Stability• Results: Class Anti-oxidant conc

250 PPM

500 PPM

1000 PPM

Blank 2.52

α-T 2.54 2.72 3.01IB 3.02 3.48 4.3

BHT 2.95 3.34 4.32BHA 3.31 4 5.43

DTBHQ 2.72 3.01 3.55TBHQ 2.91 3.42 4.75

PG 8.47 11.08 14.75PY 12.76 16.03 18.43

SBO-based biodiesel Oxidative Stability• Results:

FA SBO-BD SBO-ND

C14:0 0 0

C16:0 14.1 10.84

C16:1 0.7 0.47

C18:0 5.15 4.64

C18:1 25.29 23.11

C18:2 48.7 53.73

C18:3 6.08 7.21

∑SFA (%) 19.2 15.48

∑UFA (%) 80.8 84.52