Transcript Slide 1

Done By: Rakan Masarweh 0076370
Biodiesel
Biodiesel is a fuel that is similar to diesel fuel and is
derived from usually vegetable sources (as soybean oil)
Forty years before the first diesel engine was
demonstrated by Rudolf diesel on August 10, 1893 in
Germany. He used a vegetable oil.
In remembrance of the event August 10 has been
declared International Biodiesel Day.
Biodiesel
Biomass
Potential
Introduction
Biomass is seen as an interesting energy source
for several reasons
• First is that bioenergy can contribute to sustainable
development
• Biomass energy is also interesting from an energy
security perspective
• Resources are often locally available and conversion
into secondary energy carriers is feasible without
high capital investments
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Installed Capacity of Biomass Power Plant: 302 MW (Aryadi, 2006)
Biodiesel
• Moreover, biomass energy can have a positive effect on
degraded land by adding organic matter to the soil.
• Furthermore, biomass energy can play an important role in
reducing greenhouse gas emissions, since if produced and
utilized in a sustainable way, the use of biomass for energy
offsets fossil fuel greenhouse gas
Emissions.
Biodiesel
Definition
Biodiesel refers to vegetable oil- or animal fat-based diesel
fuel consisting of long-chain alkyl (methyl, propyl or ethyl)
esters. Biodiesel is typically made by chemically reacting
lipids (e.g., vegetable oil, animal fat) with an alcohol
producing fatty acid esters.
Biodiesel is meant to be used in standard diesel engines
and is thus distinct from the vegetable and waste oils used
to fuel converted diesel engines
Biodiesel
Biodiesel can be used alone, or blended with petro diesel.
Biodiesel can also be used as a low carbon alternative to
heating oil
Much of the world uses a system known as the "B" factor to
state the amount of biodiesel in any fuel mix
Biodiesel
•100% biodiesel is referred to as B100
•20% biodiesel, 80% petrodiesel is labeled B20
•5% biodiesel, 95% petrodiesel is labeled B5
•2% biodiesel, 98% petrodiesel is labeled B2
Biodiesel
Blends of 20% biodiesel and lower can be used in diesel
equipment with no, or only minor modifications, although
certain manufacturers do not extend warranty coverage if
equipment is damaged by these blends.
Biodiesel can also be used in its pure form (B100), but may
require certain engine modifications to avoid maintenance and
performance problems
Biodiesel
Since the passage of the Energy Policy Act of 2005, biodiesel
use has been increasing in the United States.
In the UK, the Renewable Transport Fuel Obligation obliges
suppliers to include 5% renewable fuel in all transport fuel
sold in the UK by 2010.
In 2005, Chrysler released the Jeep Liberty CRD diesels from
the factory into the American market with 5% biodiesel blends,
indicating at least partial acceptance of biodiesel as an
acceptable diesel fuel additive.
Biodiesel
The Volkswagen Group (VW)has released a statement
indicating that several of its vehicles are compatible with B5
and B100 made from rape seed oil and compatible with the EN
14214 standard.
The use of the specified biodiesel type in its cars will not void
any warranty.
In 2007, McDonalds of UK announced it would start producing
biodiesel from the waste oil byproduct of its restaurants. This
fuel would be used to run its fleet.
Biodiesel
In 2005, Congress authorized the EPA's (Environmental
Protection Agency) Renewable Fuel Standard (RFS)
Program, an ambitious plan that requires fuel blenders
to incorporate 7.5 billion gallons of renewable fuel a
year by 2012
The program, which takes effect later this year, aims to
cut U.S. petroleum consumption by 3.9 billion gallons
annually, or roughly 1.6 percent of the fossil fuels that
would otherwise be used for transportation.
Biodiesel
Production
Biodiesel is commonly produced by the
transesterification of the vegetable oil or animal fat
feedstock.
There are several methods for carrying out this
transesterification reaction including the common batch
process, supercritical processes, ultrasonic methods, and
even microwave methods.
Biodiesel
Chemically, transesterified biodiesel comprises a mix of
mono-alkyl esters of long chain fatty acids. The most
common form uses methanol (converted to sodium
methoxide) to produce methyl esters (commonly referred to
as Fatty Acid Methyl Ester - FAME) as it is the cheapest
alcohol available, though ethanol can be used to produce
an ethyl ester (commonly referred to as Fatty Acid Ethyl
Ester - FAEE) biodiesel and higher alcohols such as
isopropanol and butanol have also been used.
Biodiesel
A lipid transesterification production process is
used to convert the base oil to the desired esters. Any
free fatty acids (FFAs) in the base oil are either
converted to soap and removed from the process, or
they are esterified (yielding more biodiesel) using an
acidic catalyst. After this processing, unlike straight
vegetable oil, biodiesel has combustion properties very
similar to those of petroleum diesel, and can replace it
in most current uses.
Biodiesel
A by-product of the transesterification process is the
production of glycerol.
For every 1 ton of biodiesel that is manufactured, 100 kg of
glycerol are produced
Originally, there was a valuable market for the glycerol,
which assisted the economics of the process as a whole.
However, with the increase in global biodiesel production,
the market price for this crude glycerol (containing 20%
water and catalyst residues) has crashed
Biodiesel
Where does Biodiesel come from
A variety of oils can be used to produce biodiesel. These
include:
Virgin oil feedstock – soybean oils are most commonly used, soybean
oil alone accounting for about ninety percent of all fuel stocks in the US. It
also can be obtained from other crops such as mustard, jojoba, flax,
sunflower, palm oil, coconut.
Waste vegetable oil (WVO)
Animal fats including tallow, lard, yellow grease, chicken fat, and the byproducts of the production of Omega-3 fatty acids from fish oil.
Biodiesel
Algae – which can be grown using waste materials such as
sewage and without displacing land currently used for food
production.
Oil from halophytes – such as Salicornia bigelovii, which can
be grown using saltwater in coastal areas where conventional
crops cannot be grown, with yields equal to the yields of
soybeans and other oilseeds grown using freshwater irrigation
Biodiesel
Many advocates suggest that waste vegetable oil is the
best source of oil to produce biodiesel, but since the
available supply is drastically less than the amount of
petroleum-based fuel that is burned for transportation
and home heating in the world, this local solution could
not scale to the current rate of consumption.
Biodiesel
Make Biodiesel At Home
Biodiesel@home
With conversion costs currently at 16 pence a liter it
makes both financial and environmental sense. Under
current government legislation everyone is allowed to
produce for their own use 2500 liters per year without
paying duty (In the US). If you can find a source of used
cooking oil then the payback is however long it takes you
to use approx 1100 liters (at current prices).
The kit costs £1250 plus vat and delivery. All you
need is some methanol and some sodium hydroxide and
off you go. Ideal for a garage or an outhouse.
How IT Works
Biodiesel@home
The chemical reaction to make biodiesel is very
straightforward. Vegetable oil (used or unused) is a
'triglyceride', which means three hydrocarbon chains are all
attached to one glycerin molecule. It takes a certain amount of
catalyst (sodium hydroxide otherwise known as caustic) to
break off these hydrocarbon chains.
If using used cooking oil there is a need to add even
more caustic to help neutralize the "free fatty acids" that form
in used cooking oil. The sodium hydroxide is dissolved into
methanol (methyl alcohol) using a volume that is 20% of the
oil you want to convert. This is your 'premix' solution
Biodiesel@home
This is then blended vigorously with the oil to enable
total conversion of the oil. The blending allows the catalyst
to separate each hydrocarbon chain, one by one. They then
bond with a floating methanol molecule to form biodiesel.
The glycerin molecules that have been stripped away fall to
the bottom of the reaction tank where they are removed.
Glycerin usually represents about 10% of the total mix
volume.
And then you have pure
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