Transcript Precipitate Formation above the Cloud Point in Soy

Oxidative Stability of SBO, PO and CWGbased biodiesel
Project Status Report
Rhet de Guzman
03/25/2008
Biodiesel Oxidative Stability
• Anti-oxidants:
1) α-T 2) IB 3) BHT 4) BHA 5) DTBHQ 6) TBHQ –
7) PG 8) PY –
α-Tocopherol
IONOL BF200
2,6-Di-tert-butyl-4-methylphenol
FCC Butylated hydroxyanisole, 98.5+% FCC
2,5-Di-tert-Butyl-hydroquinone, 99%
tert-Butylhydroquinone, 97%
Propyll Gallate
Pyrogallol, 99%
Anti-oxidants in 1000ppm, 500ppm and 250ppm concentrations
SBO-based biodiesel Oxidative Stability
SBO ND
Anti-oxidant conc
1000
250 PPM 500 PPM PPM
Blank
2.52
Ratio
0
1
0
α-T
2.54
2.72
3.01
1.007937 1.079365 1.194444
IB
3.02
3.48
4.3
1.198413 1.380952 1.706349
BHT
2.95
3.34
4.32
1.170635 1.325397 1.714286
BHA
3.31
4
5.43
1.313492 1.587302 2.154762
DTBHQ
2.72
3.01
3.55
1.079365 1.194444 1.40873
TBHQ
2.91
3.42
4.75
1.154762 1.357143 1.884921
PG
8.47
11.08
14.75
3.361111 4.396825 5.853175
PY
12.76
16.03
18.43
5.063492 6.361111 7.313492
SBO-based biodiesel Oxidative Stability
• Results:
SBO Next
Diesel
SBO-B100
from
Nextdiesel
20
21
18
250 PPM
18
16
500 PPM
IP (hr)
IP (hr)
1415
1000 PPM
12
12
250 ppm
10
8
500 ppm
9
1000 ppm
6 6
4
3
2
0 0
Blank α-T α-T IB
Blank
IB BHT
BHT
BHA
BHA
DTBHQ
DTBHQ
TBHQ
TBHQ
PG
PY PG
PY
PO-based biodiesel Oxidative Stability
PO ND
Anti-oxidant conc
1000
250 PPM 500 PPM PPM
Blank
7.35
Ratio
0
1
0
α-T
6.17
6.66
7.66
0.839456 0.906122 1.042177
IB
8.66
10.25
13.99
1.178231 1.394558 1.903401
BHT
7.77
9.12
11.41
1.057143 1.240816 1.552381
BHA
12.11
17.24
25.02
1.647619 2.345578 3.404082
DTBHQ
6.28
6.68
8.63
0.854422 0.908844 1.17415
TBHQ
7.82
7.81
11.72
1.063946 1.062585 1.594558
PG
21.86
31.74
44.97
2.97415 4.318367 6.118367
PY
29.63
40.68
54.84
4.031293 5.534694 7.461224
PO-based biodiesel Oxidative Stability
• Results:
PO Next
Diesel
SBO-B100
from
Nextdiesel
60
21
250 PPM
5018
IP (hr)
IP (hr)
15
40
500 PPM
1000 PPM
12
250 ppm
30
500 ppm
9
1000 ppm
20
6
10 3
0 0
Blank α-T α-T IB
Blank
IB BHT
BHT
BHA
BHA
DTBHQ
DTBHQ
TBHQ
TBHQ
PG
PY PG
PY
CWG-based biodiesel Oxidative Stability
CWG ND
Blank
α-T
IB
BHT
BHA
DTBHQ
TBHQ
PG
PY
Anti-oxidant conc
1000
250 PPM 500 PPM PPM
2.35
3.51
3.38
5.27
7.19
4.64
7.28
14.2
26.07
4.23
6.51
6.74
11.11
6.31
12.14
22.92
34.97
5.41
9.22
9.3
14.85
12.05
23.02
30.66
40.58
Ratio
0
1
0
1.493617
1.438298
2.242553
3.059574
1.974468
3.097872
6.042553
11.09362
1.8
2.770213
2.868085
4.72766
2.685106
5.165957
9.753191
14.88085
2.302128
3.923404
3.957447
6.319149
5.12766
9.795745
13.04681
17.26809
CWG-based biodiesel Oxidative Stability
• Results:
CWG Next
Diesel
SBO-B100
from
Nextdiesel
45
21
40
250 PPM
18
35
500 PPM
IP (hr)
IP (hr)
15
30
1000 PPM
2512
20
250 ppm
500 ppm
9
1000 ppm
15
6
10
3
5
0 0
Blank α-T α-T IB
Blank
IB BHT
BHT
BHA
BHA
DTBHQ
DTBHQ
TBHQ
TBHQ
PG
PY PG
PY
Biodiesel Oxidative Stability
• Results:
Biodiesel Stability
60
CWG Next
Diesel
SBO-B100
from
Nextdiesel
45
21
50
40
40
250 PPM
18
35
500 PPM
SBO 500 ppm
1000 PPM
SBO 1000 ppm
30
IP (hr)
IP (hr)
IP (hr)
15
30
SBO 250 ppm
_
PO 250 ppm
2512
20
250 ppm
500 ppm
9
1000 ppm
15
20
__
CWG 500 ppm
10
CWG 1000 ppm
3
5
0 0
Blank α-T α-T IB
Blank
IB BHT
BHT
BHA
BHA
DTBHQ
DTBHQ
TBHQ
TBHQ
PG
PY PG
PY
0
Blank
PO 1000 ppm
CWG 250 ppm
6
10
PO 500 ppm
α-T
IB
BHT
BHA
DTBHQ
TBHQ
PG
PY
Biodiesel Oxidative Stability
WSU_samples
8
7
6
IP (hr)
5
4
3
2
1
0
1
2
3
4
5
6
7
8
9
11
12
13
14
15
16
17
18
19
20
21