Sentences with phrase «oxides of nitrogen into»

In the hot exhaust gas, the solution breaks down into ammonia, which splits the oxides of nitrogen into nitrogen and water.

Usually contains platinum, palladium and / or rhodium, which acts as a catalyst in a chemical reaction that converts unburned hydrocarbons, carbon monoxide and oxides of nitrogen into water vapor, carbon dioxide and other gases that are less toxic than untreated exhaust fumes

Automobiles, power plants and industries release oxides of nitrogen into the atmosphere.

Not exact matches

It is almost three years since VW was caught fitting cheat devices to fool testers into measuring lower than actual levels of nitrogen oxides emitting from its diesel cars.

Some of the nitrogen the crops do not absorb is converted into nitrous oxide, a greenhouse gas 310 times more powerful than carbon dioxide.

Scientists estimate that one - third of the world's acid rain falls near the coasts, carrying some 100 million tons of nitrogen oxide, ammonia, and sulfur dioxide into the ocean each year.

The pollution is generally a mixture of gases — such as carbon monoxide, sulfur dioxide and nitrogen oxides — and particulate matter, microscopic solids or droplets that can be inhaled into the lungs.

By oxidation or reduction, i.e. the donation or acceptance of electrons, the catalysts convert combustion pollutants, such as carbon monoxide, nitrogen oxides and hydrocarbons, into carbon dioxide, water, and nitrogen.

When adding the reduction agent ammonia formed by e.g. decomposition of urea, nitrogen oxides are converted into harmless nitrogen and water vapor over the catalytic converter.

Researchers at Umeå University, together with researchers at Uppsala University and Stockholm University, show in a new study how nitrogen doped graphene can be rolled into perfect Archimedean nano scrolls by adhering magnetic iron oxide nanoparticles on the surface of the graphene sheets.

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.

This mixture produces very hot combustion which converts some of the nitrogen in the air into oxides.

The team noticed a greater density of lightning in locations where ships blast emissions, including sulfur and nitrogen oxides, into the air.

The software fooled EPA emissions testers into thinking that Volkswagen's diesel engines produced less emissions of nitrogen oxides than they released in the real world.

At the same time, the burning of ever - increasing quantities of coal, oil and natural gas converts some atmospheric nitrogen into oxides of nitrogen (NOx).

It has also prevented more than 73 tons of carbon dioxide, 54 pounds of nitrogen oxide, 136 pounds of sulfur dioxide, and 700 milligrams of mercury from being released into the air.

The EGR system works by recirculating some of the exhaust gas back into the intake to lower combustion temperatures and cut emissions of nitrogen oxides.

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.

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.

The car contains a 4.5 - gallon tank of fluid that gets sprayed into the exhaust, cleaning up nitrogen oxides.

Heating systems in the United States spew over a billion tons of CO2 into the atmosphere each year and about 12 % of the nation's sulfur dioxide and nitrogen oxides.

Acid rain: Also called acid precipitation or acid deposition, acid rain is precipitation containing harmful amounts of nitric and sulfuric acids formed primarily by sulfur dioxide and nitrogen oxides released into the atmosphere when fossil fuels are burned.

This is due to a combination of particulate matter, sulphur dioxide and oxides of nitrogen that are released into the atmosphere when coal is burned.

Approximately 90 % of nitrous oxide is released into the atmosphere from nitrogen fertilizer production and nylon products manufacturing.

Ozone is an odorless gas that is not directly emitted into the air but is created by chemical reactions between nitrogen oxides (NOx) and volatile organic compounds (VOC)-- which occur naturally but are also produced from the burning of fossil fuels and are released in the process of drilling for oil and natural gas.

As we have noted, one of the Achilles heels for the US aviation industry could be the complex mixture of greenhouse gases and precursors — carbon dioxide, water vapor, and oxides of nitrogen — injected directly into the atmosphere by every jet and turboprop in the sky.

Fossil fuel electricity has only been cheaper than the more economically viable of the environmentally friendly options (for example wind and solar power) because the fossil fuel power station operators are allowed to dump their waste (carbon dioxide, oxides of nitrogen and sulfur, toxic metals and particulate matter) into the atmosphere at no cost to themselves.

In addition to greenhouse gases, tar sands operations release large volumes of acid rain - causing sulphur dioxide and nitrogen oxides into the environment.

In 2013, transportation contributed more than half of the carbon monoxide and nitrogen oxides, and almost a quarter of the hydrocarbons emitted into our air.

In freshwater systems, acidifying depositions occur following the release of nitrogen oxides (NOx) and sulfur dioxide (SO2) into the atmosphere, mainly from the combustion of fossil fuels, which then may fall in dry or wet form.

But Increases Ones Which Cause Acid Rain The bad news is that if you take the entire lifecycle of a CO2 - burying plant — the «cradle to grave» pollution which takes into account the extra energy required mine additional coal and bring it to the power plant — emissions of nitrogen oxide and sulfur oxides were 40 % greater than a modern coal plant not set up to capture carbon.

Proven harmful substances released into the atmosphere by the burning of fossil fuels include: particulate matter, sulphur dioxide, oxides of nitrogen, carbon monoxide and mercury; among others.

Some of the unused nitrogen would leach into the nearest waterway the next time it rained, and some would evaporate into the atmosphere as nitrous oxide, a greenhouse gas nearly 300 times more potent than carbon dioxide.