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INTRODUCTION : JATROPHA CURCAS L. OIL

Jatropha curcas L. oil has potential in

production of biodiesel.Its oil content around 30 - 40%.Its fatty acid content is around

Fatty Acid Composition

Value

Myristic Acid 0.05%

Palmitic Acid 14.07%

Margaric Acid 0.07%

Stearic Acid 6.39%

Arachdic Acid 0.24%

Palmitoleic Acid 0.82%

Oleic Acid 39.90%

Linoleic Acid 34.16%

Arachidonic Acid 0.24%

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OBJECTIVES

Ethanolysis of Jatropha curcas L. oil byusing enzyme catalyst which isBurkholderia cepacia

To determine the biodiesel productionthrough measurement of viscosity

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METHODOLOGYAnalysis Biodiesel a.k.a fatty acid ethyl ester conversionmeasured using Brookfield Viscometer LVDV-E

Material 5 batch reactors with Jatropha curcas L. oil, ethanoland enzyme and repeated one more time

Data

Taken in 4 different parameter which are molar ratio,enzyme content (wt% of oil), reaction time and watercontent (wt% of oil)

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RESULT : OBSERVATION

Biodiesel

Glycerol

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TRANSESTERIFICATION MECHANISM

Ethanol was deprotonated by the enzyme catalyst

to become nucleophile.The breakage of triglyceride accompanied by theexchange of acyl acceptor, ethanol R group toform 3 ethyl ester and 1 glycerol

The existence of heat as well as enzyme catalystonly increase the reaction rate and does notchange form in the end of the process

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1 st parameter

16.6614.44 13.57

12.1 13.3

0

5

10

15

20

25

30

3540

45

0 1 2 3 4 5 6 7

V i s c o c i t y

( m P a . s

)

Molar ratio

Molar ratio Jatropha Oil Viscosity Biodiesel standard viscosity

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2 nd parameter

14.31 14.01 13.26 13.1110.68

0

5

10

15

20

25

30

35

40

45

0 10 20 30 40 50 60

V i s c o c

i t y ( m

P a . s

)

Enzyme (wt% of oil)

Enzyme concentration (wt%of oil) Biodiesel standard viscosity Jatropha Oil Viscosity

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3 rd parameter

14.5513.2

11.61

17.7919.54

0

5

10

15

20

25

30

35

40

45

0 10 20 30 40 50 60 70 80 90

V i s c o c

i t y ( m P a . s

)

Reaction time (hour)

Reaction time Jatropha Oil Viscosity Biodiesel standard viscosity

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4 th parameter

15.2513.2

18.1219.8 20.01

0

5

10

15

20

25

30

35

40

45

0 5 10 15 20 25 30

V i s c o c

i t y ( m P a . s

)

Water content(wt% of oil)

Water content (wt% of oil) Jatropha Oil Viscosity Biodiesel standard viscosity

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Parameter Viscosity reduction, cP

= (Jatropha oil - Optimum Jatrophabiodiesel)

Molar ratio 28.35 Enzymepercentage 29.77

Reaction time 28.84

Water content 27.25

Highest viscosity reduction was found for enzymepercentage parameter followed by reaction time,molar ratio and water content percentage

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COMPARISON

The hazelnut biodiesel is 8.82 cP while soy oil biodiesel 7.92 cP.

Properties

Refined jatropha oil

Jatropha oilbiodiesel

Commercial oilbiodiesel

Viscosity(cP)

25C 40C 25C 40C 40C

50.52 40.45 14.04 10.68 1.9 ~ 6

Fuel properties of jatropha oil based biodiesel in comparison with the jatropha

oil and commercial oil biodiesel

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CONCLUSION

Immobilization of lipase based on the experimentresults shows that the optimum parameters are1:6 molar ratio, 60 hours, 50% enzyme

percentage and 10% water contentThe best viscosity value obtained was 10.68 cP.The calcium alginate beads were appear as

appropriate support for the ester conversion.