Basically, all woody biomass can be used as raw material for wood pellet production, but the economic factor is the main limiting factor. That is why
wood pellets are produced only from energy plantations and wood industry
wastes, and not from natural forest wood. And basically for wood pellet
production only uses wood industry wastes and energy plantations to achieve
economic factors or in other words, the raw material for wood pellets is wood
or wood waste that is worth like the wood waste. That is why wood from natural
forests that are decades old are not suitable for use as raw material for wood
pellets. The wood has a higher economic value so that if it is used for wood
pellet production, the wood pellet product produced will certainly be expensive
so that it does not sell in the market. Energy plantation using fast growing
trees and coppice namely leguminoceae groups such as gliricidia and red
calliandra, while natural forest wood uses plants that grow slowly so that it
takes decades to be able to harvest or take the wood like teak trees.
Biomass or specifically wood is a material that can store carbon from
the atmosphere. As long as it is in the form of wood, carbon is still stored in
the wood. The longer the use of wood for various things in human life, the
longer the carbon is stored in the wood material, and vice versa. A number of
attempts were made to extend the life of the wood from a number of damages such
as wood drying, use of wood preservatives and so on. Based on the above
conditions, the carbon storage time in wood material can be grouped into two,
namely, first, long-term storage, namely the use of wood for buildings, doors,
windows, furniture, etc., and secondly, short-term carbon storage for use as
fuel material or energy source. Wood pellets are the use of wood biomass as a
source of energy, and because the wood is produced from photosynthesis, that
is, trees absorb CO2 from the atmosphere, use water and sunlight to become
material, especially when burned, carbon emissions do not increase the
concentration of CO2 or greenhouse gases in the atmosphere, so it is termed as
carbon neutral fuel.
In the forest management, namely for energy and wood plantations for
industrial needs, whose age is up to decades, certainly has its own mechanism
and characteristics. As the earth's temperature reduction program is due to
climate change due to high atmospheric CO2 concentrations, biomass as a carbon
neutral fuel is increasingly needed. Wood pellet needs are projected to reach
tens of million of tons in the next few years. This should encourage the
importance of increasing the number and extent of energy plantations for the
production of wood pellets. The energy plantation for wood pellet production
can be integrated with sheep, goat or cow farms, for more details, please read
here. Whereas wood for industrial needs with decades of age for use in
buildings, furniture and so on began to occur a lot of decline because many are
replaced by other materials that are generally cheaper such as aluminum, mild
steel and PVC. Wood materials for various purposes are also increasingly
limited in their use. A number of environmental problems are also a concern
when the wood is preserved mainly with the use of CCA (copper-chrome-arsenic).
Although it will produce wood with good properties such as termite resistance,
stable dimensions, high mechanical strength and so on but after it wears out
and is no longer used and discarded, the wood will release arsenic and chromium
into the atmosphere, so it is not environmentally friendly and dangerous.
No comments:
Post a Comment