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Benefits of cooking oil

Posted by aries panutan 0 comment
Biodiesel is a modification of cooking oil. Biodiesel is usually made on the fatty acid ester from the liquid cooking oils that have a more liquid nature is not easy to freeze, especially if used in the 'cold' like Europe. Who's shortcomings is this material can dissolve or damage the rubber which is usually resistant to diesel oil. Making biodiesel is a little difficult because it requires methanol, catalyst (caustic soda, KOH) and the separation of glycerin derived from side reactions. So that biodiesel has higher prices than on the use of cooking oil directly. Biodiesel is a renewable material, non-toxic, can even be compared with table salt, and no skin irritation when compared with soap. If spilled biodiesel will be consumed by microbes up to 98% within 3 weeks. Biodiesel has a minimum side effects to the aquatic, marine, water resources, forests, fishing, and especially sensitive to the presence of an oil spill. The center city is full of human activity, the room is closed as warehousing, manufacturing, food processing, high rise building, underground mining will gain enormous benefit by the biodiesel. Local waters are sensitive to contamination such as harbors, canals, lakes, local tourism, forest 'absolute must' use of biodiesel compared to diesel. Biodiesel significantly reduces pollution, reduces unburned hydrocarbons, carbon monoxide, sulfates, polisiklikaromatik hydrocarbons, and acid rain. Very low sulfur content will enable the use of catalysts in the exhaust system. If used with diesel fuel, biodiesel can reduce or eliminate the need for sulfur in diesel oil. Usually it takes more than 500 ppm sulfur (per 1 million parts) or 0.05% in diesel oil to add lubrication. Blending biodiesel with diesel fuel to reduce sulfur content to 15 ppm or 0.0015%. Mixing is done with 1% biodiesel will get a 65% lubrication. For the purpose of reducing the sulfur content is quite simply by adding biodiesel into diesel fuel as much as from 0.4 to 0.5%. Comparison of the use of other fuels The use of pure methanol as fuel, have difficulty in storage, refueling and bus engine modifications. Natural Gas or CNG also has difficulties in storage because the shape of flammable gases, and could explode, so more needs to hire educated in dealing with them. Who has the advantage of biodiesel is less flammable than diesel fuel, easier storage, and can be mixed with diesel fuel. The use of direct cooking oil is cheaper but has the advantage has a shortage of viscosity, and disrupting the availability for public consumption. The use of biodiesel which can only be obtained if the maximum use 100% biodiesel without mixing with diesel oil.
How people use biodiesel?
Biodiesel is obtained from the esterification with methanol that can be used in a state of pure or mixed with diesel fuel. Biodiesel can be used 100% or known as B100. However, it should be noted that biodiesel is an ester that can soften the rubber polymer, so the material must be replaced with a type that is resistant to ester. For that as another alternative is to mix as much as 20% biodiesel in diesel oil, hereinafter known as B20. This mixture can be used directly without the need for replacement of equipment of this type of rubber. As known in the automotive much use of rubber material as fuel pipeline, 'seals, packing' or seal leakage. The use of B100 or greater than 20% biodiesel will require polymer materials that are resistant diesel fuel and ester. 

Making biodiesel 

On a small scale can be done with 1 liter of cooking oil new or used, methanol of 200 ml or 0.2 liter, caustic soda or NaOH 3.5 gram to clean cooking oil, if needed 4.5 grams of used oil or maybe more. This excess is needed to neutralize free fatty acids or FFA a lot of used frying oil. KOH can also use the more expensive but has a price and required 1.4 times more than the soda. The process of manufacture: Caustic soda dissolved in methanol and then inserted into the heated oil about 55 oC, stirred rapidly for 15-20 minutes and then left overnight in a cold state. Then it will be obtained biodiesel at the top with clear yellowish color and slightly lower mix of soap from FFA, the remaining unreacted methanol and glycerin about 79 ml. Biodiesel which is a yellowish liquid at the top are separated easily by pouring and removing the bottom of the liquid. For large-scale bottom product can be purified to obtain valuable glycerin expensive, also the soap and residual unreacted methanol.
Why is used oil containing free fatty acids?. 

When the oil used to fry events oxidation, hydrolysis of the oil molecules break down into acids. This process is getting bigger with the high heat and long periods of time during the frying of food. The presence of free fatty acids in cooking oil is not good in health. FFA can also be esters if reacted with methanol, is if the soda will react with soap mebentuk. Biodiesel product must be purified from side products, glycerine, soap residual methanol and soda. Time soda that exist in henghidrolisa and biodiesel can break down into FFA biodiesel which is then dissolved in the biodiesel itself. The content of FFA in biodiesel is not good because it can clog the filter or strainer with sediment and become corrosion on metal diesel engine.
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Judul: Benefits of cooking oil
Ditulis oleh aries panutan
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