O. Fournier wrote:Hello,
I just signed up after having searched in Google for "airplane + electric" (the life-size one, 9 m wingspan which flew in the south of France)! ......
Well, will have to find something else ... MDR!
Hello O (livier?) Fournier, I have all the more pleasure in welcoming you as we are virtually neighbor ... (not far from ... Lanquais)
An answer for the future?
Ethanol: sweet potato more profitable than corn!
http://www.bulletins-electroniques.com/ ... /56005.htm
According to experiments conducted by scientists from the Agricultural Research Agency (ARS), in the states of Maryland and Alabama, sweet potatoes provide two to three more carbohydrates than corn. The same result was obtained for cassava in the state of Alabama.
The carbohydrate yield of a plant is directly linked to the yield of bioethanol production. Two basic steps are involved in the production of bioethanol: hydrolysis and fermentation. Hydrolysis is a chemical reaction, accelerated by enzymes (cellulases), which break down carbohydrate chains, into organic compounds. Fermentation breaks down organic compounds into alcohols such as bioethanol.
According to these studies, the carbohydrate yields of sweet potato approach those of sugarcane which is the most interesting plant for the production of bioethanol. Another benefit of sweet potatoes and cassava is that they require much less fertilizer and pesticide than corn.
This study was conducted by Lew Ziska, an ARS plant physiologist in Beltzville, Maryland with support from other scientists at the ARS National Soil Dynamics Laboratory in Auburn, Alabama. The research was done by comparing the carbohydrate yields of each plant. The results show that for the same growing and harvesting conditions, the sweet potato provided 10.5 tonnes of carbohydrate / hectare, while the corn yields only 3.7 tonnes / hectare. The cultivation of sweet potatoes for the production of bioethanol is therefore seriously to consider. However, further studies are still needed to determine the fertilizer, water and pesticide requirements for such crops for energy efficiency assessments.
The primary objective of this study is to try to develop new sources of organic fuels without reducing the supplies intended for human and animal food. Indeed, the production of bioethanol from corn is identified as one of the causes of the current global food crisis. It is therefore essential to diversify agricultural raw materials for bioenergy production.
Good evening to all
About the economic crisis….
With traditional greetings from Lietseu
Today we are waiting, tomorrow we will be in the tent.
A. Roumanoff (we are not told everything)