The biomass in Spain has the greatest potential as a renewable source, quantified at 25.7 Mtoe which is more than Spain's total industrial energy consumption. However, government plans only foresee using 2.8 Mtoe by 2000 despite available resources of around 10 Mtoe. While Spain has increased biomass facilities, it still lags countries like France where 6 million households use wood heat and Denmark where a plant burns 28,000 tons of straw annually to produce electricity. Conversion methods for biomass energy include combustion, pyrolysis, and production of biogas through anaerobic digestion. Agricultural and forestry wastes along with energy crops have potential to increase biomass resources for energy production.

1. The
La biomassa
biomass
Johan y Zayra 3ºB

2. 1 The biomass in spain
The biomass in the renewable source with the
greatest potential in Spain, quantified 25'7
resources Mtoe. (Million tonnes of oil equivalent),
equivalent to an amount greater than all the
energy consumption of Spanish industry.

3. 1.2
However, government plans to spend just "stay
where you are": although official sources say
some 10 Mtoe usable resources

4. 1.3
Year, the authorities lack the political will to stop
throwing away all that potential energy and Plan
national energy refers only to the use of 2.8
Mtoe. In 2000.

5. 2 The biomass in the
world
Although our country has made in the years 1996 and 1990 a total of 235 facilities
using biomass, we are still far from reaching the level of France, the leading country
of the EC in which six million households use wood as a source of heat, or Denmark,
where a plant burns 28,000 tons of straw to produce 13 Mw. electricity. In Brazil some
2,000,000 vehicles run almost pure alcohol, obtained from the cultivation of sugar
cane, and 8,000,000 more use a mixture of gasoline and alcohol.

6. 2.1 the biomass in the
world
One of the most striking examples in the field of technology of renewable energy
sources in the case of the production of industrial alcohol by fermentation in Brazil. In
1976, the Brazilian government decided to stop being the largest oil importer from
developing countries, and embarked on a program for the mass production of ethanol
from sugar cane molasses or cassava pulp for be used as fuel. Currently there are
between 3 and 5 m of ethanol million per year. Much of the ethanol is blended with
gasoline, and constitutes 20% of the fuel used by cars, thus saving fossil fuel
(gasoline).

7. 3.METHODS OF
conversion of biomass
into energy.
Thermochemical methods.
These methods rely on the
use of heat as a source of
biomass conversion. They
are well adapted to the
case of dry biomass and,
in particular, straw and
wood.

8. 3.1
The combustion of the biomass oxidation by
oxygen in the air, simply releases carbon dioxide
and water, and can serve for domestic heating
and for the production of industrial heat.

9. 3.2
Pyrolysis, incomplete combustion of biomass in
the absence of oxygen, about 500 degrees
Celsius, is used for a long time to produce
charcoal.

10. 3.3
Apart from this, the pyrolysis takes releasing a
lean gas mixture of carbon dioxide and
monoxide, hydrogen and light hydrocarbons.

11. 3.4
This gas, calorific weak, can serve to power
diesel engines, or to produce electricity, or to
move vehicles.

12. 4.use of biomass
● Forests. The only really biomass currently exploited. For
energy is the forest to cover part of the energy demand
can only be a reasonable option in countries where
territorial density of such demand is very low, as well as
the population (Third World).

13. 4.2
● In Spain (otherwise timber deficit country) is
only reasonable to consider the energy use of
waste cutting and clean out and farm forestry
(wood, branches, foliage, etc..) And the wood
residues.

14. 4.3
● In this regard, the underlying energy supply
firings has been evaluated in 2.500.000tep, on
the basis of which the production of wood
(always in Spain) in t / ha is approximately
equal to a quarter of the number growth
annual timber in m3/ha.

15. 5.Agricultoral waste.
● Agricultural waste and livestock manure and
bedding. These are another important source
of bioenergy, although not always give such
reasonable profit. Following this approach, in
Spain has evaluated a hypothetical 3.7 million
toe energy supply from cereal straw.

16. 5.1
● In Spain only seems advisable to use for this
purpose from the chaff of cereals where the
removal from the field does not appreciably
affect the fertility of the soil, and livestock
manure and bedding when no manure
systematically use not to adversely affect
agricultural productivity.

17. 6.energy crops
● Energy crops. Involves growing vegetables for
the possibility of the use of energy crops. This
option is not very profitable. Doubts increase
in for temperate regions, where the
photosynthetic assimilation is less than that
which occurs in tropical areas.

18. 6.1
● Doubts increase in for temperate regions,
where the photosynthetic assimilation is less
than that which occurs in tropical areas.

19. 6.1
● It is discussed the desirability of crops or
plantations for energy, not only for its
profitability in themselves, but also to exert
competition with food production and other
necessities, (wood, etc.).

20. Energy Crops
Energy crops, also called "power crops," could
be grown on farms in potentially very large
quantities, just like food crops

21. Questions
true or false
The biomass are not renowable resources true
Biodiesel fuel no can be produced from soybeans,corn and sugar true
cane
Biomas energy helps to generate electricity by biomass false
Wood harves residues,crops urban refused ,and methane gas true
are not known as biomass
Bacteria and produce methane gas when they decompose false
biomass materials
Methane gas can be used to air conditioned buildings true
Biodiesel fuel not can be used as fuel for cars false