Sentences with phrase «using switchgrass»

Emissions produced from using switchgrass bioethanol would be roughly 94 % lower than those from gasoline - making it almost carbon neutral.

• Ethanol production using switchgrass required 50 % more fossil energy than the ethanol fuel produced.

In one example using switchgrass and a small SUV, the researchers calculated that the SUV would go 8,000 miles per acre on ethanol, but a comparable electric SUV would go 15,000 miles per acre on electricity generated by that acre of switchgrass.

People say «We aren't going to use Douglas firs, we are going to use switchgrass.»

Not exact matches

They then used these ionic liquids to pre-treat lignocellulosic biomass from switchgrass.

After crunching the numbers, Vogel and his colleagues found that ethanol produced from switchgrass yields 540 % of the energy used to grow, harvest, and process it into ethanol.

A recent study from the Great Lakes Bioenergy Research Center and published in Environmental Research Letters looks at how efficiently «second generation» biofuel crops — perennial, non-food crops such as switchgrass or native grasses — use rainwater and how these crops affect overall water balance.

This means that switchgrass ethanol delivers 540 percent of the energy used to produce it, compared with just roughly 25 percent more energy returned by corn - based ethanol according to the most optimistic studies.

Instead of processing commodities that might otherwise be used for food, next generation fuels can be produced from dedicated energy crops like switchgrass, to the non-edible parts of corn plants, to unmarketable wood from the lumber industry — taking resources that would otherwise go to waste and using them to fuel our energy independence.

«You can use the waste product from the distilling process or any number of other sources of biomass, such as switchgrass or wood pulp.

Rabasi pointed out that switchgrass is a hardy, natural grass native to North America that does not require fertilization or the use of chemicals during growth, making it an eco-friendly ingredient.

When land and other resources that would have been used for a crop (e.g., corn) are diverted to another crop (e.g., switchgrass), the price of the displaced crop will tend to increase because of the decreased supply, which will in turn tend to increase the price of any substitutes for the displaced crop, such as rice for corn.

In a recent reality check, scientists estimated what it would take to sequester 1 billion tonnes of carbon using BECCS based on switchgrass feedstock.

«Even if we were able to use productive plants such as poplar trees or switchgrass, and store 50 % of the carbon contained in their biomass, in the business - as - usual scenario of continued, unconstrained fossil fuel use, the sheer size of the plantations for staying at or below 2 °C of warming would cause devastating environmental consequences,» Boysen says.

While there continue to be high hopes that biofuels made from plant products like corncobs and switchgrass can help meet our growing energy needs, one major obstacle has been the cost of enzymes which are used to break down these tough plant parts into simple sugars that can be turned into ethanol.

Their findings showed a startling 218 - 990 million hectares of land would have to be converted to switchgrass (which is 14 - 65 times as much land as the US uses to grow corn for ethanol); also 17 - 79 million tonnes of fertiliser a year — which would be 75 % of all global nitrogen fertiliser used at present; and 1.6 - 7.4 trillion cubic metres of water a year.

The latter would mean, for example, using less corn and more switchgrass to produce fuel ethanol.

An experiment by Argonne National Laboratory in Central Illinois explores the potential of formerly overlooked plants such as willow and switchgrass for bioenergy feedstock, offering farmers a possibly lucrative use for difficult land and preventing nitrogen pollution to boot.

Because land - use decisions are local, Geyer explains, he and his colleagues examined five prominent «sun - to - wheels» energy conversion pathways — ethanol from corn or switchgrass for internal combustion vehicles, electricity from corn or switchgrass for BEVs, and PV electricity for BEVs — for every county in the contiguous United States.

They see small - scale cellulosic refineries located near switchgrass grown on empty fields, beside pulp paper mill plants, or linked to municipal landfills, producing ethanol and using leftover biomass for co-generation of heat.

Because so little energy is required to cultivate crops such as switchgrass for cellulosic ethanol production, and because electricity can be co-produced using the residues of such cellulosic fuel production, reductions in greenhouse gas emissions for celluslosic ethanol when compared to gasoline are greater than 100 per cent.

55 Fig. 20 - 15, p. 482 Tree plantation Coal power plant Tanker delivers CO2 from plant to rig Oil rig CO2 is pumped down from rig for deep ocean disposal Spent oil reservoir is used for CO 2 deposit Abandoned oil field Crop field Spent oil reservoir is used for Crop field Switchgrass = CO2 deposit = CO2 pumping CO 2 deposit CO2 is pumped down to reservoir through abandoned oil field

Based on a study from the U.S. Departments of Energy and Agriculture, we estimate that using forest and urban wood waste, as well as some perennial crops such as switchgrass and fast - growing trees on nonagricultural land, the United States could develop more than 40 gigawatts of electrical generating capacity by 2020, roughly four times the current level.

In this section, we estimate resource requirements and ancillary damages associated with 1 Pg C y − 1 atmospheric carbon removal using either eucalyptus afforestation or switchgrass BECS.

Part of the reason switchgrass ethanol is more energy efficient is that the whole plant is used.

59 down from rig for deep ocean disposal Abandoned oil field Crop field Spent oil reservoir is used for Crop field Tanker delivers CO2 from plant to rig Coal power plant Oil rig Tree plantation CO2 is pumped down from rig for deep ocean disposal Abandoned oil field Crop field Switchgrass CO2 deposit CO2 is pumped down to reservoir through abandoned oil field Figure 20.15 Solutions: methods for removing carbon dioxide from the atmosphere or from smokestacks and storing (sequestering) it in plants, soil, deep underground reservoirs, and the deep ocean.

Ethanol Production Using Corn, Switchgrass, and Wood; Biodiesel Production Using Soybean and Sunflower

«Energy outputs from ethanol produced using corn, switchgrass, and wood biomass were each less than the respective fossil energy inputs.

Use of perennial feedstocks, such as miscanthus or switchgrass, offers...

Using data from corn ethanol plant technologies and smaller - scale switchgrass conversion studies, Vogel estimated that an average of 60 GJ per hectare could be obtained if the switchgrass were converted into bioethanol.

Vogel and his colleagues conducted the first large - scale field study of switchgrass by monitoring its growth on the borders of 10 farms in Dakota; they noted the amount of seed, fertilizer and fuel used, the amount of precipitation and the amount of grass harvested over the span of 5 years.

One of switchgrass» many benefits, Vogel explains, is that it need not take up valuable space that would otherwise be used to grow food crops; it is perfectly happy being grown on marginal cropland.

«When you hear about biomass, you usually hear only about switchgrass, but we're looking at using prairie plants including wildflowers,» said Dave Williams, manager of TPC's Prairie Institute.

Switchgrass production requires fossil fuel inputs for machinery used in establishment (soil preparation and seed sowing), cultivation, harvest, and transportation to the processing plant (Qin et al. 2006).

Though the current substitution rate is negligible, a rapid expansion is possible with the use of wood residues (urban wood, pallets, and secondary manufacturing products) and dedicated feedstock supply systems (DFSS) such as willow, poplar, and switchgrass.

Since cellulosic ethanol is created by using all of the parts of the plant being used (instead of the 10 %, mainly the edible part, of the plant), in all likelihood, if this process turns out to work as advertised, we could use the discarded parts of corn, or non-edible plants such as switchgrass, so food production would not have to be drastically increased.

The energy from an acre of switchgrass used to power an electric vehicle would prevent or offset the release of up to 10 tons of CO2 per acre, relative to a similar - sized gasoline - powered car.

Yes, we did recently report on a study which showed that switchgrass could potentially yield 5 times more energy than was used to grow it and, yes, there are several companies that are working hard to bring cellulosic ethanol to market.

More about switchgrass and other grasses:: Planting Switchgrass Could Improve Soil Quality:: Switchgrass Yields Five Times More Energy Than is Used to Grow it:: TreeHugger Picks: Far - Out Fuels forswitchgrass and other grasses:: Planting Switchgrass Could Improve Soil Quality:: Switchgrass Yields Five Times More Energy Than is Used to Grow it:: TreeHugger Picks: Far - Out Fuels forSwitchgrass Could Improve Soil Quality:: Switchgrass Yields Five Times More Energy Than is Used to Grow it:: TreeHugger Picks: Far - Out Fuels forSwitchgrass Yields Five Times More Energy Than is Used to Grow it:: TreeHugger Picks: Far - Out Fuels for the Future

Using perennial bioenergy crops (e.g., switchgrass, silver grass, willow, eucalyptus) rather than annuals (e.g., corn) reduces emissions and raises carbon sequestration in soil.