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Homemade Biodiesel

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SCIENCE PROJECT

MATERIAL

PROCEDURE

DISCUSSION
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MATERIALS
 Methanol, CH3OH
 Vegetable Oil

Molecular Formula: C66H100O6


Solubility in Water: Insoluble
Density at 20°C: 0.91 g/cm3
Uses: Cooking, lubrication, fuel source
 Sodium Hydroxide (NaOH)

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PROCEDURE
STEP 1
 250ml of methanol prepared in glass bottle.
 Add ½ spoon of NaOH
 Stir until all NaOH dissolve.

Step 2
 Heat vegetable oil until temp reach 600c.

Step 3
 Pour vegetable oil onto 2L of plastic bottle.
 Add the mixture of methanol and NaOH.
 Shake for 20 seconds.

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DISCUSSION
 This process called Trans-Esterification.
Step 1
 CH3OH + NaOH  CH3ONA +H2O

Step 2
 Vegetable oil  Hot Vegetable oil

60OC

Step 3
 CH3oNa + Hot Vegetable oil  Biodiesel + ppt

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INTRODUCTION
BIODIESEL

 Biodiesel is a form of diesel fuel


manufactured from vegetable oils, animal
fats, or recycled restaurant greases.
 It is safe, biodegradable, and produces
less air pollutants than petroleum-based
diesel.

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ADVANTAGES DISADVANTAGES
Use of blends above B5 not
Domestically produced
from non-petroleum, yet warranties by auto
renewable resources. makers
Lower fuel economy and
 Can be used in most diesel
engines, especially newer power (10% lower for B100,
ones. 2% for B20)
Currently more expensive
 Less air pollutants (other
than nitrogen oxides) and More nitrogen oxide
greenhouse gases. emissions
 Biodegradable B100 generally not suitable

 Non-toxic for use in low temperatures


Concerns about B100's
 Safer to handle
impact on engine durability
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 Note: You should never fuel your


vehicle with clean or used grease or
vegetable oil that has not been
converted to biodiesel. It will damage
your engine.

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