Sentences with phrase «oxide emissions which»

It is an outdoor mountable unit which emits low nitrous oxide emissions which those who are environmentally conscious will appreciate.

Not exact matches

Worldwide, livestock generate between 14.5 and 18 percent of greenhouse gas emissions — mainly methane and nitrous oxide, which are more harmful to the climate than even CO2.

The Golden State is at the vanguard in the United States in reducing auto emissions of nitrogen oxide gases, which help produce toxic smog and acid rain.

U.S. laws increasingly target emissions of hydrocarbons (HC) and nitrogen oxides (NOx), which make smog.

Pourhashem noted the key measurements needed are the rate of soil emission of nitric oxide (NO), which is a smog precursor, after biochar is applied to fields.

They found surprisingly, that human - induced emissions of methane and nitrous oxide from ecosystems overwhelmingly surpass the ability of the land to soak up carbon dioxide emissions, which makes the terrestrial biosphere a contributor to climate change.

«Indirect» emissions often refer to gases released far from the source, like nitrous oxide that is emitted downstream from the fertilizer from which it originates.

The work builds on research, published in Science last year, in which the Wang and Datye groups found a novel way to trap and stabilize individual platinum atoms on the surface of cerium oxide, a commonly used component in emissions control catalysts.

And a new study shows that biochar could have an impact on agriculture's other greenhouse gas emission: nitrous oxide, or laughing gas, which is no laughing matter when it comes to climate change.

A leader in this quest is German - based automaker DaimlerChrysler, which recently introduced BLUETEC technology — a modular exhaust treatment system that cuts nitrogen oxide and soot output significantly, enabling cars to meet the most stringent U.S. emission standards.

In the mid-1980s, the company teamed up with another, Lean Burn Associates, to add a second component: a system which recirculates some exhaust gases into the air intake, which reduces emissions of oxides of nitrogen.

Many of his mistakes are big ones: he bungles the issues involving reserves and resources that are critical to his core argument about oil remaining cheap; he drastically misleads his readers about the extent to which sulfur dioxide and nitrogen oxide emissions from coal - burning have been reduced; he trivializes the climate - change risks from coals carbon dioxide emissions by suggesting we know the impacts will be worth only 0.64 cents per kilowatt - hour.

Ozone is produced by reactions involving nitrogen oxides (NOx), which come primarily from motor vehicle emissions, and volatile organic compounds resulting from industrial processes.

Berkeley Lab received these competitive awards from ARPA - E's Rhizosphere Observations Optimizing Terrestrial Sequestration (ROOTS) program, which seeks to develop crops that take carbon out of the atmosphere and store it in soil — enabling a 50 percent increase in carbon deposition depth and accumulation while also reducing nitrous oxide emissions by 50 percent and increasing water productivity by 25 percent.

But the courts haven't always struck down EPA emissions trading programs — such as the trading program for nitrogen oxides — and when they have disqualified programs, it was either because agencies failed to follow proper procedure (as was the case with a Bush - era mercury rule that eased requirements on power plants) or because specific statutory goals were not followed (as was the case in the Clean Air Interstate Rule, which wouldn't have necessarily reduced all interstate pollution).

To reduce nitrogen oxide emissions, Mercedes - Benz first uses dual electrically controlled and cooled exhaust gas recirculation (EGR) which, depending on engine operating conditions, redirects up to 40 % of the exhaust gases back into the cylinders.

With the combination of a NOx oxidating catalytic converter and a downstream SCR catalytic converter, which is integrated into the diesel particulate filter and uses AdBlue injection to reduce oxides of nitrogen, the V8 TDI has a particularly efficient emissions control system.

Like most of today's clean diesels, nitrous oxide emissions are reduced by means of a Selective Catalyst Reduction after - treatment system, which uses urea - based Diesel Exhaust Fluid (DEF) as a cleaning agent.

With the combination of a NOx oxidizing catalytic converter and a downstream SCR catalytic converter, which is integrated into the diesel particulate filter and uses AdBlue injection to reduce oxides of nitrogen, the V8 TDI has an efficient emissions control system.

According to the Chinese Centre for Disease Control and Prevention, the burning of coal is responsible for 70 percent of the emissions of soot that clouds out the sun in so much of China; 85 percent of sulfur dioxide, which causes acid rain and smog; and 67 percent of nitrogen oxide, a precursor to harmful ground level ozone.

However, the corresponding rise in carbon - dioxide (CO2) emissions of around 0.2 % in 2030 is more than offset as reducing the biomass used for cooking provides a net reduction in greenhouse - gas emissions, which would save the equivalent of around 165 Mt of carbon - dioxide equivalent from methane and nitrous oxide.

We can not avoid some level of warming caused by the heat - trapping emissions already present in the atmosphere, some of which (such as carbon dioxide and nitrous oxide) last for 100 years or more.

We could not find any studies in western Canada which compared - nitrous oxide emissions from pulse crops such as lentils, peas or chick peas, with nitrous oxide emissions from cereals such as spring wheat.

We did not find to date any published studies which compared the effects of type of tillage system and nitrogen fertilizer placement method on nitric oxide emissions.

Nitrogen fertilisation is however a main contributor to increased nitrous oxide (N2O) emissions, a very potent greenhouse gas (per century 298x as potent as CO2) and which — under accelerating growth — has just reached a concentration of 323.2 ppb.

When spring thaw emissions were combined with growing season emissions, the conventional tillage system actually had higher total nitrous oxide emissions than the zero till system.We suggest that this type of experiment (full year emission measurements) be repeated with deep banding of N fertilizer, which would be expected to further reduce emissions from zero till systems.

Peatlands and mangroves are well known for their huge carbon - storing potential — mangrove soils alone store up to 4 times more carbon than trees — however, less is known about methane and nitrous oxide emissions, which may be important for their global warming potential, warns Hergoualc» h.

Nitrogen oxide and sulfur dioxide emissions contribute to the formation of acid rain, which inhibits the ability of fish to survive in ponds and lakes.

A recent Canadian study of the nation - wide emissions of greenhouse gases from agricultural activities used nitrous oxide emissions factors which indicated that nitrous oxide emissions from anhydrous ammonia and ammonium phosphate were from four to five times as high as those from urea or ammonium nitrate.

Garden equipment engines, which have had unregulated emissions untill very recently, emit high levels of carbon monoxide, volatile organic compounds and nitrogen oxides, producing up to 5 % of the nation's air pollution and a good deal more in metropolitan areas.

Coal is responsible for at least 50 % of sulfur dioxide emissions and is a major contributor to nitrous oxide and Particulate Matter (PM2.5) emissions which are three major toxic air pollutants;

The early results which found higher levels of nitrous oxide emissions from zero till all seem to have employed surface application of N fertilizer.

The researchers identify six ways in which biochar curbs emissions, including reducing methane production from decaying plant waste, reducing nitrous oxide release from soils, and avoiding carbon dioxide emissions by storing carbon in the soil.

As for greenhouse gases, it currently only covers carbon dioxide emissions, with the exception of the Netherlands, which has opted in emissions from nitrous oxide.

Progress is however markedly slower for eutrophication, which is caused by excess nitrogen deposition resulting from emissions of nitrogen oxides (NOx) and ammonia (NH3).

Agriculture has become a major emitter of greenhouse gases — carbon dioxide, methane, and nitrous oxide — which are now responsible for 19 % of total global emissions.

A higher bio-diesel portion generally leads to slightly elevated nitrogen oxide emissions with simultaneously clearly reduced particulate mass emissions, which can be explained with the higher oxygen portion in the fuel among other things.

This stands in stark contrast to the use of fossil fuels, which can not only result in the emission of large amounts of CO2, but also of Sulfur Dioxide (SO2) and Nitrogen Oxide (NOx).

Green freight programs work with the freight industry to minimize the public health impacts of diesel emissions by promoting technologies that reduce emissions from the combustion of diesel, including particulate matter (PM) and oxides of nitrogen (NOx), which benefits the health of vulnerable populations.

«Ecological treaties should seek to curb emissions of sulpher dioxide, nitrogen oxides, heavy metals and other highly - toxic pollutants instead of targeting carbon dioxide, which is a non-toxic gas whose impact on global warming has not been proved,» says Dr. Golubchikov.

(Sec. 340) Requires the EPA Administrator to report to Congress on an analysis of the effects of different carbon dioxide reduction strategies and technologies on the emissions of mercury, sulfur dioxide, and nitrogen oxide, which cause acid rain, particulate matter, ground level ozone, mercury contamination, and other environmental problems.

Not later than 18 months after the date of enactment of this Act, the Administrator shall submit to Congress a report that analyzes the effects of different carbon dioxide reduction strategies and technologies on the emissions of mercury, sulfur dioxide, and nitrogen oxide, which cause acid rain, particulate matter, ground level ozone, mercury contamination, and other environmental problems.

The reliability of supply provided by our nation's network of storage and distribution facilities has contributed to the increased use of natural gas in many sectors of the U.S. economy, which has led to reductions in air emissions — ranging from criteria pollutants, such as sulfur dioxide and nitrogen oxides, to greenhouse gases.

In order of reduction, they call for controlling nitrogen oxide emissions from the burning of fossil fuels using «maximum feasible reductions,» which could reduce reactive nitrogen emissions by 55 billion pounds of a year; increasing the efficiency of fertilizing crops (33 billion pounds a year); improved animal management policies (33 billion pounds); and ensuring that at least half the world's urban population has sewage treatment (11 billion pounds).

And they found that the highest post-thaw emissions of nitrous oxide came from the bare peat soils: these emissions were fivefold those from still - frozen soils and matched the kind of outgassing observed in tropical soils, which are the world's largest natural land - based nitrous oxide source.

When you allow for emissions of methane, CFCs, ozone, nitrous oxide and soot — which also warm the atmosphere — the carbon dioxide budget is an even tighter 3,200 billion tonnes, note Pierre Friedlingstein and colleagues in the paper.

CyClean technology is an additive that is added to coal prior to combustion which the company states reduces mercury and nitrogen oxide emissions.

The EPA regulates diesel marine engines, which are «among the highest contributors of hydrocarbons (HC) and oxides of nitrogen (NOx) emissions in many areas of the country,» adding to both air and water pollution.

For example, in 1990, Congress amended the Clean Air Act to limit emissions of sulfur dioxide and nitrogen oxides, which are major sources of fine particulates.

Nitrous oxide emissions, which comes from industry, farming and general energy use, fell by nearly 2 %.