Elephant grass Miscanthus giganteus JT

crude vegetable oil, diester, bio-ethanol or other biofuels, or fuel of vegetable origin ...
georges100
Éconologue good!
Éconologue good!
posts: 338
Registration: 25/05/08, 16:51
x 1




by georges100 » 14/06/08, 16:48

there was a plantation around metaleurope ....
had to be wrong, it was no elephant grass but the bunny grass : Mrgreen:
it's a disaster almost nothing would have pushed, rabbits shave las shoots at ground sil ....
0 x
Ahmed
Econologue expert
Econologue expert
posts: 12298
Registration: 25/02/08, 18:54
Location: Burgundy
x 2963




by Ahmed » 14/06/08, 19:35

Braves rabbits! They did not even have needed to mutate! This is a great lesson: megalomania always (but sometimes much later) rabbit or grain of sand on its way ...
0 x
"Please don't believe what I'm telling you."
georges100
Éconologue good!
Éconologue good!
posts: 338
Registration: 25/05/08, 16:51
x 1




by georges100 » 14/06/08, 19:39

the problem is that the earth is so polluted that it is what we found to allow as culture ...
the original idea was to clear land with plants providing biocarbrant ....
it's practically a lead mine ....
0 x
Ahmed
Econologue expert
Econologue expert
posts: 12298
Registration: 25/02/08, 18:54
Location: Burgundy
x 2963




by Ahmed » 14/06/08, 21:39

In this light and in this case it was not a bad idea.
poor rabbits!
However, I wonder if there is no contradiction between wanting to absorb pollutants from soil by plants and then burn these plants?
Perhaps to concentrate pollutants to better reprocess or confine them?
0 x
"Please don't believe what I'm telling you."
User avatar
Woodcutter
Econologue expert
Econologue expert
posts: 4731
Registration: 07/11/05, 10:45
Location: Mountain ... (Trièves)
x 2




by Woodcutter » 17/06/08, 16:24

Like? I did not know the Miscanthus was considered as a "hyperaccumulative" plant vis-à-vis heavy metals ...
0 x
"I am a big brute, but I rarely mistaken ..."
User avatar
Woodcutter
Econologue expert
Econologue expert
posts: 4731
Registration: 07/11/05, 10:45
Location: Mountain ... (Trièves)
x 2




by Woodcutter » 17/06/08, 16:28

Good after verification, nothing to do with any pollution control, it is just a question of finding a "useful" allocation to agricultural land too polluted by lead to be allocated to food crops.
Miscanthus is apparently used as a direct fuel for a small power plant, and not as a source of cellulose for biofuel.
0 x
"I am a big brute, but I rarely mistaken ..."
georges100
Éconologue good!
Éconologue good!
posts: 338
Registration: 25/05/08, 16:51
x 1




by georges100 » 17/06/08, 16:39

possible I'm just repeating what the program manager ...
and I have not set foot in the factory sector since 4 years ...
0 x
Corpse Grinder 666
I understand econologic
I understand econologic
posts: 148
Registration: 17/11/08, 11:54




by Corpse Grinder 666 » 02/02/11, 14:28

I relaunch this subject which is old because I looked for information and a priori the miscanthus is sometimes sober in "food" and sometimes big requester: maybe this is due to the variety or to the fact that we want it to produce more .
Also, if miscanthus to interesting figures on the PCI (calorific Inferieur) which is calculated in kWh / ton, with respect to other plants / trees it is more interesting to me, it seems to me you calculate the power heat / surface.

because tadpole shaped willow (PCI = 4100 Kwh / T source http://www.poele-a-bois.fr/faq/pouvoir-calorique.html) Produce 1,5 stry:
1 300 cubic meter = kg source:http://www.poele-a-bois.fr/faq/poids-stere-bois.html
So cubic meter = 1,5 450 kg
450 4100 kg = x = 0,45 1845Kwh / plant
But this amount will energetics all 5 years conversely Miscanthus produces every year thus:
1845 / 5 369 = Kwh / plant
I can put this tadpole in a small form which allows me to plant only one seedling every 3m and one row every 5m => therefore a space of 3,75 m² per plant (since the distances are shared by 2 plants each time which makes: 1,5x2,5 = 3,75 m²)
Thus producing a willow do me on the year:
369 3,75 Kwh for m² per year


Miscanthus product to 10 20 (with inputs) T / ha = 15 say T / ha
for a PCI 4700 Kwh / T
for the same area as my willow miscanthus will produce:
= 15 15000 and 1 kg ha = 10 000 m²
so :
15000 / 10000 = 1,5kg / m²
for 3,75 m² = 5,625 0,005625 kg = T
therefore it is = PCI 4700x0,005625 = 26,44 Kwh / year production 20 t / ha this represents 35,25 Kwh / year

what I see (tell me if I'm wrong) that for the particular miscanthus is not valid because it is a mass production for people (farmer) having adequate equipment (tractor, grinder ... etc. .. and device turning it into pellets).
For me who only works the saw (so energetics autonomy) it really is not great .... but even with troçonneuse I'm not sure it worth the shot ;-)

Because for the average person that I am, do my wood is more productive (energy / area) with an essence of the corner (I have not done the math with oak tetard will produce all 8 years 1 cubic meter;)) .
Not to mention that I can add elements to the ground between each plant can I do with miscanthus ...

Moreover, as miscanthus through a die and granulated compared 2 Fillières of big production (miscanthus and classic wood) should be passed on the energy consumption of 2 channels production tools and energy earned by 2 Fillières: the fact that can make agro forestry so there are other energetics gain earned as wood Fillière and on the other the chain of miscanthus to gain a final product (granulated giving more than énérgie easy buche).

Still I suppose miscanthus would lose.

its strongest point in my opinion: to put on the polluted soil
0 x
User avatar
antoinet111
Grand Econologue
Grand Econologue
posts: 874
Registration: 19/02/06, 18:17
Location: 29 - Landivisiau
x 1




by antoinet111 » 02/02/11, 18:15

Corpse Grinder 666 wrote:its strongest point in my opinion: to put on the polluted soil


the rest I'm not strong numeracy so I do not look, anyway, I do not think it's losing.

Furthermore, the more water needed to willow andnutritional elements that miscanthus (plant C4 more carbon yield).

the fact that it can grow on polluted soil is only secondary, I do not know a producer who uses polluted soil.
0 x
I vote for the writing of concrete post and practicality.
Down the talkers and ceiling fans!
User avatar
antoinet111
Grand Econologue
Grand Econologue
posts: 874
Registration: 19/02/06, 18:17
Location: 29 - Landivisiau
x 1




by antoinet111 » 02/02/11, 18:36

an interesting thing about miscanthus is that harvesting can do in the fall or spring.
This allows to choose the dry matter content or humidity and drying is almost complete on the contrary the willow.

Besides the spring, leaves graves of them even preventing the development of weeds and allows not to export any organic matter.
0 x
I vote for the writing of concrete post and practicality.

Down the talkers and ceiling fans!

Back to "biofuels, biofuels, biofuels, BtL, non-fossil alternative fuels ..."

Who is online ?

Users browsing this forum : No registered users and 152 guests