biodiesel waste recycling.

Simple way biodiesel waste recycling.

Scientists in England have managed to convert waste into biodiesel crude amine-amine useful without the need for separation techniques difficult. Glycerol is produced in significant quantities as a side-product in biodiesel production, making it as a renewable raw materials are cheap for the chemical industry.

For example, using the microbes to ferment glycerol is an interesting path to get the 1.3-propanediol, which can be used as precursors for polymers and high-value chemicals platform.

However, the fermentation products produced in dilute solutions together with the material and cell metabolic products of others, making the process of purification and separation is difficult.

Currently, a team of scientists, led by Andrew Marr at Queen's University Belfast and Gillian Stephens at the University of Manchester, had combined with the microbial processes terkatalisis transition metals to produce amines, secondary amines without the need to isolate and purify the diol intermediate compounds.

Marr and Stephens treat bacterial glycerol by Clostridium butyricum, then do centrifugation of a mixture of bacteria, 1,3-propanediol, and by-products to remove cells. This team then added a solution of iridium catalysts, bases and anilin in toluene into the solution, producing a mixture bifase. After 24 hours at a temperature of 115oC, 20 percent 1,3-propanediol has been converted into secondary amines.

"Since fossil fuels are quite rare, the chemists have started to develop new methods to convert renewable raw materials into chemical products and materials that people want," said Marr. "The progress that we have the key is to integrate the processes biokatalitik and kemokatalitik to avoid separation of fermentation products."

"This is an important example of adding value to the resource-renewable resources," said Mark Harmer, a doctoral student at DuPont, Delaware, U.S.. "The ability to use all the components of renewable raw materials will become the key to developing a biorefinery to replace oil-based refinery that is now."

Waste glycerol by Clostridium butyricum treated ago with iridium catalyst, a base and anilin to produce secondary amine-amine.

Stephens agrees: "This new approach will allow obtaining many chemical products from one single fermentation mixture. As far as we know, this is the first time where one-pot approach has been applied by using the product-porduk of microbial cells intact. This approach must be comprehensive, because of their chemical properties can be changed by replacing the non-liquid phase with a mixture of reactants and catalyst alternatives. Microbiological properties may also change, allowing the conversion of raw materials into a variety of fermentation products. "

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Oil usefulness.

Uses fractions obtained from petroleum-related fisisnya properties like boiling point and viscosity, and chemical properties.

Gasoline.
Gasoline is a transportation fuel that still plays an important role until now. Gasoline contains more than 500 types of hydrocarbons that have a chain C5-C10. Levels vary depending on the composition of crude oil and the desired quality. So, how is the use of petrol as fuel?

Gasoline as a fuel in motor vehicles.
Because gas burns only in the vapor phase, then the fuel must be evaporated in the carburetor before the cylinder is burned in vehicle engines. The energy generated from the combustion process of gasoline changed into motion through the following stages.

Combustion of gasoline is the desired result in a smooth drive to the decline of the piston. This depends on the accuracy of the combustion time for the amount of energy transferred to the piston to the maximum. Timeliness depends on the type of burning hydrocarbon chain which in turn will determine the quality of gasoline. Straight-chain alkanes in gasoline such as n-heptana, n-octane, and n-nonana highly flammable. This causes the combustion occurs too early before the piston reaches the right position. That places the sound of explosions known as knock (knocking). Arson too early also means there are remaining component of gasoline that has not burned so that the energy transferred to the piston is not the maximum. Branched-chain alkanes / alisiklik / aromatics in gasoline as isooktana not too easy to burn. Thus, fewer beats produced, and the energy is transferred to a larger piston.

Therefore, gasoline with a good quality should contain more branched chain alkanes / alisiklik / aromatic than straight chain alkanes. The quality is expressed by gasoline octane numbers.

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Biodiesel industry.

Biodiesel is a simple chemical compound that contains six or seven kinds of fatty acid esters. Biodiesel is defined as the methyl esters with carbon chain lengths between 12 and 20 of the fatty acids derived from vegetable oils for example lipid or animal fat. Vegetable oils or animal fats can be made biodiesel by transesterification reaction using alkohol.Komposisi and chemical properties of biodiesel depend on the purity, the short length, degree of saturation, and the structure of the alkyl chain fatty acid constituent.

Biodiesel is an alternative fuel from renewable sources (renewable), with the composition of fatty acid esters from vegetable oils include: palm oil, coconut oil, castor oil fence, cotton seed oil, and still there are more than 30 kinds of plants that are potential to Indonesia made biodiesel.

The process of making Biodiesel.
Biodiesel is made through a chemical process called transesterification. This process produces two products of methyl esters (biodiesel) / mono-alkyl esters and glycerine which is a side product. The main raw material for biodiesel production include vegetable oils, animal fats, fat old / fat recycling. Meanwhile, as the supporting material that is alcohol. In making the catalyst needed for biodiesel esterification process. Biodiesel products depending on the vegetable oils used as raw materials and preliminary processing of these raw materials.

Alcohol is used as a reactant for the vegetable oil is methanol, but can also be used ethanol, isopropanol or butyl, but it should be noted also in the alcohol content of the water. When the high water content will affect the results of low quality biodiesel, because the content of soap, ALB and high trigiserida. Besides the results of biodiesel is also influenced by the high operating temperature of the production process, the length of mixing time or mixing speed of alcohol.

Catalyst is also required to enhance solubility during the reaction, commonly used catalyst is a strong base is NaOH or KOH or sodium metoksida. The catalyst will be chosen depending on used vegetable oil, crude oil when used with ALB content of less than 2%, well formed and also glycerin soap.

Catalysts are generally very hygroscopic and reacts to form a chemical solution that will be destroyed by the reactant alcohol. If more water is absorbed by the catalyst is a catalyst work less well so poorly biodiesel product. After the reaction is complete, the catalyst must neutralize by adding a strong mineral acid. After being washed biodiesel neutralization process can also be done with the addition of washing water, HCl can also be used for the neutralization process 318 base catalyst, when used acid to produce phosphate fertilizers phosphat (K3PO4).

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