What is bioenergy?
Bioenergy is renewable energy from
biological materials. In its strictest sense is a synonym for biofuels,
fuels derived from biological sources. In its broadest sense also includes
biomass, biological and technical material used as biofuel, as well as the
social, economic, scientific regarding use of biological energy sources.
There is a slight tendency for bioenergy in Europe, compared with biofuels
in North America. (Wikipedia).
What are the process waste generated?
The process of obtaining methane
organic sediment and water as by-products which are treated by vermiculture
for incorporation into the soil is generated. The water obtained from the
reactor nitrogen is incorporated back into the cactus plantations as
fertilizer reinjected in modern irrigation system.
What type of gas is generated and
what is its calorific value?
The biogas containing mainly methane
and 92% carbon dioxide at 7%, 1% and a gas as nitrogen and hydrogen. Its
calorific value is 8,800 kcal / m3
Table. Power caloric different fuels
Calorific Power Kcal. /
of biogas equals to:
Why use nopal ?.
The nopal has excellent molecular
features which allows to deliver a large amount of biogas in a very short
time, in comparative terms for the same volume of biogas nopal degrades 5-10
times faster than animal manure, it allows a single computer is 5- 10 times
Nopal biogas not produce hydrogen
sulfide which when burned in contact with air becomes further sulfur oxides
and hydrogen sulfide in producing acid rain.
What are the environmental, social
and economic benefits of this biofuel?
Generates poles, both economic,
social and environmental sustainable development, and the nopal is renewable
contracts producers are based on project lifespan to 15 years, so the
producer can risk their capital and consumers are guaranteed production for
a long period.
The energy of the nopal is clean,
inexhaustible, generates carbon credits, permanent jobs and solve the energy
problem in a sustainable way short, medium and long term.
Why is it that the reactors are low
Unlike more traditional biogas for
manure which typically takes two stages and an acid other methanogenic
processes, which are rather more acidic pH, the pear is processed only
slightly acid pH 6.5- 6.8 and in a single step since the time the material
is inside the reactor is very short, this makes it unsuitable expensive
stainless steel reactor, since it is only necessary to coat the inside with
epoxy paint or other plastic type every two years for good maintenance.
On the other hand, the lines of the
design are implemented with purchasable equipment in the local industrial
market and current use.
What is the reason for using this
The technology has existed for over
100 years has been used in India, China, Germany and many other countries.
Has significant advantages in terms
of cost, environmental and social benefits. It is also considered a very
weak solution from the engineering point of view, working at low pressures
and room temperature, compared to the production of methane from grounds at
What is the yield per hectare?
Cactus is an extraordinary plant
with a modern irrigation, two or three annual crops, can deliver
continuously from 1000-1200 ton of biomass / year, in terms of energy
equivalent to 100,000 liters of diesel / ha.
Why has not been done before?
Throughout the history of mankind
can be seen that the fuels and transportation and countless inventions
require not only knowledge but the technological capability to exploit, for
centuries the wood is used, then the coal by the industrial revolution boost
the development of humanity.
Oil only in the last 150 years has
been the technical capability of extracting terrestrial and submarine
In the case of nopal, biogas is used
more than 100 years in China and other Asian countries do, but only in 1984
(Contreras and Toha, U de Chile) have the knowledge that this plant was
capable of producing large amounts of energy marginal growing conditions.
Is a contaminant system?
No, The whole process is completely
organic, no pesticides or toxic substances that harm the environment are
Can it be replicated?
If we work with cluster of 100
hectares which deliver a modular system allows for replication.
Where you can plant?
The basic interest is in degraded
soils, low quality, the cactus is well adapted to climatic conditions for
other crops. Species are adapted to alkaline soils acids.
The nopal can be planted from
10-3500 meters. with a rainfall of 115 mm to 1500 mm, preferably where there
is high solar exposure.
Will more water than other crops
On the contrary, the cactus is a
plant of boundary conditions, we can grow under extreme drought conditions.
The volume is 3,000 m3 / year, but
in the process of biogas is recovered 85% water, about 850 tons which are
reinjected into the plant by modern irrigation.
Does harvesting is manual or
As many industrial processes is
necessary to machine harvest for optimum yield.
Is it necessary cactus plantations
are near my consumption to generate electricity?
Depending on the laws of each
country in some cases the state retains a monopoly on fuel and electricity
generation, however allows self-generation, which is why it is possible to
generate electricity at a distant point on the same network and transport by
the public system to a point where consumption is lowered.