2007-09-15

Kanādā jauna investīciju programma "nākošās paaudzes" biomasas kurināmā ražošanas demonstrējuma projektiem

The NextGen Biofuels Fund, with $500 million from Ottawa, "will jump-start the development and production of the next generation of renewable fuels in Canada," says James Stanford, chairman of the fund's manager, Sustainable Development Technology Canada.
"This fund will aim to take advantage of the abundance of suitable biomass materials available in Canada by funding large-scale demonstration facilities and encouraging the growth and retention of home-grown technologies and expertise in Canada," Stanford says.
It will pay up to 40 per cent of the costs of "first-of-kind large demonstration-scale facilities." The money is repayable over 10 years, based on the project's cash flow.
So-called next-generation renewable feedstocks include fast-growing grasses, agricultural residues and forest biomass, and Sustainable Development Technology Canada, a federal foundation which has more than $1 billion to fund green innovations, says Canada has abundant cellulose-based materials "which have an energy content that is significantly higher than conventional biofuel feedstocks."

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Francijā jauns pētījums ar mērķi virzīties uz Miscanthus giganteus audzēšanas komercializācijas pusi

Relatively unknown in Europe, Miscanthus giganteus is now in the European spotlight as a biofuel crop. It is high yielding, rich in lignocellulose and requires little agricultural inputs. Growing this crop on a large-scale in France will involve developing cropping systems that seek to optimise energy balances and minimise environmental impact. Several teams from the INRA - the French National Institute for Agricultural Research - have therefor joined forces with other research teams to combine the adaptation of crop management sequences with genetic improvement of the plant. INRA is Europe's largest agricultural science institute.
Miscanthus x giganteus is a perennial grass originally from Asia. It boasts two particularly interesting qualities for biofuel production: it produces a large amount of biomass and requires few inputs.
The exceptionally high yield of miscanthus is due to its "C4" carbon metabolism, which is similar to other plants of tropical origin such as sugarcane and sorghum. This type of metabolism means it can more efficiently capture carbon gas and transform it into organic material.
Moreover, miscanthus is a perennial plant, coming back every year based on rhizomes that it has developed underground. After being planted, it will produce crops for more than 15 years. The first year is delicate because it is the time during which the plant establishes its root system. Plant growth is slow and competition with weeds is steep. The use of herbicides allows the plant to establish itself satisfactorily. At the end of the first year, the crop is ground and returned to the soil, thus creating a surface bed that limits weed growth. In the following years, the crop grows quickly and does not require herbicides. Nor does miscanthus call for the use of fungicides or insecticides.
Optimal crop conditions are required for miscanthus to express its full potential. In 2006, INRA researchers set up experimental miscanthus plantations as part of the REGIX project ('Référentiel unifié, méthodes et expérimentations en vue d'une meilleure évaluation du gisement potentiel en ressources lignocellulosiques agricole et forestière pour la bioénergie en France', or 'unified references, methods and experiments to enable improved evaluation of potential agricultural and forestry lignocellulosic resources for bioenergy in France').
These trials began simultaneously with seven potentially attractive species for energy production. These included three "C4" species (miscanthus, switchgrass and sorghum, the first two of which are perennial), three annual "C3" species (triticale, alfalfa and fescue) and plantations of poplars as short-rotation coppice (SRC).
Researchers will measure the quantity and quality of the biomass with respect to each species and for varying crop conditions. INRA researchers from the Joint Research Unit for Fractionation of Agricultural Resources and Packaging (INRA, Université de Reims) will study the quality of the biomass for its transformation into fuel : depending on whether the conversion of lignocellulose into ethanol or wood is based on a biological or thermochemical method, the crucial parameters are (i) the content of minerals, such as silica or chlorine, that are undesirable in the thermochemical method, and (ii) the water content and lignin/cellulose ratio, which influence the fermentation yield in the biological method.
Ideally, miscanthus should be harvested in the months of February and March, when the leaves have fallen and restored nitrogen levels to the soil. It is, however, possible to harvest earlier in order to use the leaf biomass. In this case, it is necessary to carry out nitrogenous fertilisation in order to provide for the following year's needs. It is also important to consider the risks involved in soil compaction due to winter harvesting in moist soil. Researchers will analyse all these crop conditions and their consequences on long-term soil development, as well as the physical and organic state of the soil.
In addition to these studies, a project was initiated in 2007 to study the genetic variability of miscanthus for agriculturally valuable traits, including production of above-ground biomass, traits associated with flowering biology and physiology of nitrogen metabolism. The project titled "Picardie Espèces Ligno-cellulosiques" (lignocellulosic species in Picardy), involves the Joint Research Unit for Abiotic Stress and Differentiation of Cultivated Plants, INRA (Université de Lille, Université d’Amiens and UNISIGMA).

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