How do you make biodiesel in a chemistry lab?
What is chemical reaction make biodiesel?
Biodiesel is an alternative fuel for diesel engines that is produced by chemically reacting a vegetable oil or animal fat with an alcohol such as methanol or ethanol. In words, the reaction is: Oil + alcohol → biodiesel + glycerin. The photo shows a bottle of biodiesel and glycerin (also called glycerol).
What chemicals are used to make biodiesel?
Biodiesel is made by reacting vegetable oil or animal fat with an alcohol (methanol or ethanol) and a catalyst (sodium hydroxide or potassium hydroxide). Sulfuric and hydrochloric acids are also used in biodiesel production. Methanol, the catalysts, and the acids are toxic chemicals.
How is bio fuel formed?
Biodiesel is nontoxic and biodegradable and is produced by combining alcohol with vegetable oil, animal fat, or recycled cooking grease. Like petroleum-derived diesel, biodiesel is used to fuel compression-ignition (diesel) engines.
Which plant is used to make biodiesel?
Biodiesel can be made from oils which have been extracted from plants such as palm, soybean, oilseed rape, or sunflower.
Why methanol is used in biodiesel production?
Methanol and ethanol are the most often used alcohols in biodiesel production. Methanol is particularly preferred because of its physical and chemical advantages. Beside its reaction with triglycerides is quick and it can be easily dissolved in NaOH .
Can you make biodiesel without methanol?
Of Course Yes, Biodiesel can be produced by the reaction of vegetable oil with any alkyl source such as methanol, ethanol, dimethyl carbonate, methyl acetate, ethyl acetate…. etc.
What is transesterification in chemistry?
Transesterification is the conversion of a carboxylic acid ester into a different carboxylic acid ester. The most common method of transesterification is the reaction of the ester with an alcohol in the presence of an acid catalyst.
What is the catalyst in biodiesel?
Niobia supported on silica is used as a heterogeneous catalyst for biodiesel production from waste oil. This catalyst has been observed to be active in both esterification and transesterification, due to the acidic nature of niobia, and it maintains its ability for >100 h without loss of activity .
How do you make biodiesel formula?
What are biofuels chemistry?
biofuel, any fuel that is derived from biomass—that is, plant or algae material or animal waste. Since such feedstock material can be replenished readily, biofuel is considered to be a source of renewable energy, unlike fossil fuels such as petroleum, coal, and natural gas.
What type of compound is biodiesel?
Esters are a class of compounds derived from the reaction of an acid and an alcohol. For example, the reaction of fatty acids and methanol produce methyl esters, or biodiesel.
What are the 5 types of biofuel?
- Wood. This is the most basic form of fuel that is derived from organic matter.
- Biogas. This is the gaseous form of biofuels.
- Biodiesel. This biofuel is liquid in nature.
What is the primary source of biodiesel?
Vegetable oils (mainly soybean oil) are the main feedstocks for U.S. biodiesel production. Other major U.S. biodiesel feedstocks include animal fats from meat processing plants and used/recycled cooking oil and yellow grease from restaurants.
What are the 6 biofuels?
- Sugar cane. Sugar can provide high-energy fuel for machines as well as people.
- Palm oil. This is extracted from the fruit of the oil palm tree, which is cultivated in south-east Asia, South America and Africa.
- Oilseed rape.
How is biodiesel made from plants?
To create bioalcohol, such as ethanol, engineers use yeast and bacteria to break down the starch in corn and other plants. To create biodiesel, refineries use the oil already found in crops such as soybeans [source: Thomas]. These vegetable oils are treated with alcohol and turned into biodiesel.
How do you convert vegetable oil to biodiesel?
The process used to convert vegetable oils to biodiesel is called transesterification, where a natural oil triglyceride, constituted of animal fats or vegetable oils, reacts with a short-chain alcohol, methanol or ethanol, in the presence of a catalyst to produce fatty acid alkyl esters [7, 27].
Can we eat biodiesel?
Edible biofuels, like corn, can be an environmentally friendly alternative to fossil fuels. Taking a sip from a modern car’s fuel tank is a bad idea. The gasoline and petroleum-based diesel fuels that power most of the world’s automobiles are fairly far removed from anything nutritious, or even safe, to drink.
Is biodiesel polar or nonpolar?
All Answers (6) Biodiesel, with its long hydrocarbon chain, is relatively non-polar .
Can you make biodiesel without a catalyst?
A non-catalytic biodiesel production route with supercritical methanol has been developed that allows a simple process and high yield because of simultaneous transesterification of triglycerides and methyl esterification of fatty acids .
Which oil is best for biodiesel?
The most widely used feedstocks for biodiesel production are vegetable oils. In this work, biodiesel production from castor oil has been synthesized by homogenous alkaline transesterification.
How is methanol removed from biodiesel?
Is methanol or ethanol better for biodiesel?
Currently, methanol is preferred over ethanol only because it is less sensitive to water in the alkali procedure. Imagine a process where one doesn’t have to worry about this (and where less toxic ethanol could be used).
What catalyst is used for transesterification?
Sulfuric acid, sulfonic acid, hydrochloric acid, organic sulfonic acid, and ferric sulphate are most commonly acids used as catalysts in transesterification . In the production of biodiesel, hydrochloric acid and sulfuric acid are favoured as catalyst .