How do you make bio diesel out of chip pan oil or coconuts?

How do you make bio diesel out of chip pan oil or coconuts?How do you make bio diesel out of chip pan oil or coconuts?
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good luckHow do you make bio diesel out of chip pan oil or coconuts?
with respect to the previous answer bio diesel is not the same as diesel obtained from crude oil sources. Diesel is a high boiling point fraction recovered from crude oil and contains paraffinic as well as aliphatic molecules. Bio diesel in contrast is obtained from methanol or ethanol esterification of triglycerides from bio sources (including vegetable oil and coconuts). Bio diesel has therefore no paraffinic molecules and is much more homogenous than regular diesel. The physical properties of the two are different as well, bio diesel has a higher flash point, a higher melting point and has the tendency to dissolve fuel deposits in systems that have been running on regular diesel.





There are several steps involved in production of bio diesel. The main step involved heating the oil first with methanol and caustic soda followed by several separation and purification steps. Please look at my references for more details.
cooking oil is ok to use straight from the bottle, say about every 20 litres add 10% or 2 litres of diesel fuel.
Biodeisel produced from soybeans is essentially the same as that which is distilled from crude oil. It has carbon chains from 10 to 14 carbons and a cetane rating. There are conversion vehicles which can run on used oil from a restaurant with few changes. Coconut oil burns, it could be used for a fuel, but is not that plentiful.
The easy route:


You can filter the oil (if it's used), then heat it (to get rid of the water), then you can mix it with kerosene (makes it easier to burn) - 30% kerosene, 70% oil. You can burn this directly in your diesel engine. Some engines work better if you start and end on regular diesel (running for a couple of minutes before switching over to your biodiesel). If you're feeling adventurous you can run the with used oil outright (no dilution with kerosene), but you'll definitely need to start and stop under regular diesel (second tank), and it will probably work better with an old fashioned diesel engine.





The difficult route:


Esterification using ethanol/methanol and sodium hydroxide. The sodium hydroxide is quite cheap to buy, but the problem is that ethanol/methanol is quite expensive (although you might get away with methylated spirits) and would probably offset any economic gains. This fuel can be used as a substitute for regular diesel.

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