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http://www.merinews.com/article/production-of-biodiesel-from-vegetable-oil-made-public/126664.shtml

The idea of using vegetable oil as an engine fuel came up around the same time when the first engine to run on peanut oil was developed. The inventor R. Diesel passed away in 1913 before his dream of a vegetable oil motorized engine was realized.
BIODIESEL is a clean burning alternate fuel. It is the name for a multiplicity of ester-based fuels (fatty esters) commonly defined as the monoalkyl esters made from vegetable oils, such as soybean oil, canola or hemp oil, or sometimes from animal fats through a simple process termed as transesterified. This renewable source is as capable as petroleum diesel in powering diesel engine without requirement of any modification.

Few important advantages of Biodiesel

Biodiesel blends of 20% biodiesel with 80% petroleum diesel can be used in diesel engines without any modification. It can also be used in neat form but may require certain engine modifications to keep away from maintenance and performance issues.
It was stated that about half of the biodiesel industry can use recycled oil or fat, the other half being soybean, or rapeseed oil according to the origin of these feed stocks.
Biodiesel is harmless, eco-friendly and biodegradable. It decreases the discharge of injurious pollutants (mainly particulates) from diesel engines (80% less CO2 emissions, 100% less sulfur dioxide.
This fuel has a very high cetane number (above 100, compared to only 40 for diesel fuel). Cetane number is a measure of a fuel’s ignition excellence. The high cetane numbers of biodiesel assists to easy cold starting and low idle noise.
The life of diesel engines is extended with the biodiesel, because it is more lubricating and additionally, power output is comparatively unaltered by biodiesel.
This eco-friendly fuel substitutes the exhaust odor of petroleum diesel with a more pleasant smell of popcorn or French fries.
For more information you can refer our other article on Biodiesel.

The Central Leather Research Institute (CLRI), Chennai, India, disclosed its patented technology for creation of bio-diesel from vegetable oil.

This technology foresees manufacturing of bio-diesel by a unique catalytical trans-esterification process of vegetable oils, that was developed by the CLRI Chemical Engineering Department scientists. Not only this but also this biodiesel manufacturing process produces glycerol as the by-product, which has vast industrial application.

As we all know quality and technology comes at a price, so is the case with this unique technique. The technology transfer documents were handed over to S P Velayutham, Chairman, Vel Bio-diesel Energy, who bought the technology for Rs 89.88 lakh.

The properties of the bio-diesel had been investigated by Indian Institute of Petroleum, Dehradun and a test run of 26,000 kms was conducted by the Anna University, CLRI has obtained patent for the technology.

Vel Bio-diesel Energy shall setup the first unit using this technology near Tiruchirapalli. The company would soon open units across different parts of the country

By developing methods to use cheap and low quality lipids as feedstocks, it is hoped that a cheaper biodiesel can be produced, thus competing economically with petroleum resources.

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Biodiesel is a diesel fuel that is made by reacting vegetable oil (cooking oil) with other common chemicals. Biodiesel may be used in any diesel automotive engine in its pure form or blended with petroleum-based diesel. No modifications are required, and the result is a less-expensive, renewable, clean-burning fuel.
1 liter of new vegetable oil (e.g, canola oil, corn oil, soybean oil)
3.5 grams (0.12 oz.) sodium hydroxide (also known as lye). Sodium hydroxide is used for some drain cleaners, such as Red Devil™ drain cleaner. The label should state that the product contains sodium hydroxide (not calcium hypochlorite, which is found in many other drain cleaners)
200 milliliters (6.8 fl. oz.) of methanol (methyl alcohol). Heet™ fuel treatment is methanol. Be sure the label says the product contains methanol (Isoheet™, for example, contains isopropyl alcohol and won't work).
blender with a low speed option. The pitcher for the blender is to be used only for making biodiesel. You want to use one made from glass, not plastic, since the methanol you will use can react with plastic.
digital scale [to accurately measure 3.5 grams (0.12 oz.)]
glass container marked for 200 milliliters (6.8 fl. oz.). If you don't have a beaker, measure the volume using a measuring cup, pour it into a glass jar, then mark the fill-line on the outside of the jar.
glass or plastic container that is marked for 1 liter (1.1 quart)
wide mouth glass or plastic container that will hold at least 1.5 liters (2-quart pitcher works well)
safety glasses, gloves, and probably an apron. You do not want to get sodium hydroxide or methanol on your skin, nor do you want to breathe the vapors from either chemical. Both chemicals are toxic. Please read the warning labels on the containers for these products! Methanol is readily absorbed through your skin, so do not get it on your hands. Sodium hydroxide is caustic and will give you a chemical burn. Prepare your biodiesel in a well-ventilated area. If you spill either chemical on your skin, rinse it off immediately with water.
Let's Make Biodiesel!
You want to prepare the biodiesel in a room-temperature (70° F) or warmer room since the chemical reaction will not proceed to completion if the temperature is too low.
If you haven't already, label all your containers as 'Toxic - Only Use for Making Biodiesel', since you don't want anyone drinking your supplies and you don't want to use the glassware for food again.
Pour 200 ml methanol (Heet) into the glass blender pitcher.
Turn the blender on its lowest setting and slowly add 3.5 g sodium hydroxide (lye). This reaction produces sodium methoxide, which must be used right away or else it loses its effectiveness. (Like sodium hydroxide, it can be stored away from air/moisture, but that might not be practical for a home setup.)
Mix the methanol and sodium hydroxide until the sodium hydroxide has completely dissolved (about 2 minutes), then add 1 liter of vegetable oil to this mixture.
Continue blending this mixture (on low speed) for 20-30 minutes.
Pour the mixture into a wide-mouth jar. You will see the liquid start to separate out into layers. The bottom layer will be glycerin. The top layer is the biodiesel.
Allow at least a couple of hours for the mixture to fully separate. You want to keep the top layer as your biodiesel fuel. If you like, you can keep the glycerin for other projects. You can either carefully pour off the biodiesel or use a pump or baster to pull the biodiesel off of the glycerin
Using Biodiesel
Normally you can use pure biodiesel or a mixture of biodiesel and petroleum diesel as a fuel in any unmodified diesel engine. There are two situations in which you definitely should mix biodiesel with petroleum-based diesel.

If you are going to be running the engine at a temperature lower than 55° F (13° C), you should mix biodiesel with petroleum diesel. A 50:50 mixture will work for cold weather. Pure biodiesel will thicken and cloud at 55° F, which could clog your fuel line and stop your engine. Pure petroleum diesel, in contrast, has a cloud point of -10° F (-24° C). The colder your conditions, the higher percentage of petroleum diesel you will want to use. Above 55° F you can use pure biodiesel without any problem. Both types of diesel return to normal as soon as the temperature warms above their cloud point.
You will want to use a mixture of 20% biodiesel with 80% petroleum diesel (called B20) if your engine has natural rubber seals or hoses. Pure biodiesel can degrade natural rubber, though B20 tends not to cause problems. If you have an older engine (which is where natural rubber parts are found), you could replace the rubber with polymer parts and run pure biodiesel.
Biodiesel Stability & Shelf Life

You probably don't stop to think about it, but all fuels have a shelf life that depends on their chemical composition and storage conditions. The chemical stability of biodiesel depends on the oil from which it was derived. Biodiesel from oils that naturally contain the antioxidant tocopherol or vitamin E (e.g., rapeseed oil) remain usable longer than biodiesel from other types of vegetable oils. According to at least one source stability is noticeably diminished after 10 days and the fuel may be unusable after 2 months. Temperature also affects fuel stability in that excessive temperatures may denature the fuel.