What does NOx stand for?
nitrogen oxides
Nitric oxide (NOx) is a chemical compound of oxygen and nitrogen which is formed by these reacting with each other during combustion at high temperatures, mainly the combustion of fuels such as oil, diesel, gas and organic material. NOx is a common name for the nitrogen oxides NO and NO2.
What is the chemical NOx?
The term ‘nitrogen oxides’ (NOx) is usually used to include two gases-nitric oxide (NO), which is a colourless, odourless gas and nitrogen dioxide (NO2), which is a reddish-brown gas with a pungent odour. Nitric oxide reacts with oxygene or ozone in the air to form nitrogen dioxide.
Why is NOx called NOx?
In areas of high motor vehicle traffic, such as in large cities, the nitrogen oxides emitted can be a significant source of air pollution. NO x gases are also produced naturally by lightning. The term NO x is chemistry shorthand for molecules containing one nitrogen and one or more oxygen atom.
What is SOx and NOx?
The two main pollutants from the ship’s emission are Nitrogen oxides (NOx) and Sulphur oxides (SOx). These gases have adverse effects on the ozone layer in the troposphere area of the earth’s atmosphere which results in the green house effect and global warming.
What does NOx do to humans?
NOx has direct and indirect effects on human health. It can cause breathing problems, headaches, chronically reduced lung function, eye irritation, loss of appetite and corroded teeth. Indirectly, it can affect humans by damaging the ecosystems they rely on in water and on land—harming animals and plants.
How do you remove NOx from air?
One way of controlling NOx emissions is to use low-nitrogen fuels. Another is to modify combustion conditions to generate less NOx. Flue gas treatment techniques, such as selective cata- lytic reduction (SCR) processes, can remove NOx.
How is NOx bad?
The nitrogen oxides family can react with ammonia, VOCs, and other compounds to form PM 2.5 pollution that easily penetrates into sensitive and deep parts of the lung causing respiratory diseases like emphysema and bronchitis. NO x also can aggravate a pre-existing heart disease, leading to premature death.
What is thermal NOx?
Thermal NOx refers to the NOx formed through high temperature oxidation of the nitrogen found in the combustion air. The formation rate is a function of temperature as well as residence time at temperature.
Is NOx harmful to humans?
What is NOx and SO2?
Breathing either sulfur dioxide (SO2) or nitrogen oxides (NOx) for short periods (24 hrs or less) can cause adverse respiratory effects such as airway inflammation, bronchoconstriction, asthma symptoms, emergency department visits and hospital admissions, especially for those with asthma or respiratory illnesses [2].
Is NOx poisonous?
Nitrogen Oxides are a family of poisonous, highly reactive gases. These gases form when fuel is burned at high temperatures. NOx pollution is emitted by automobiles, trucks and various non-road vehicles (e.g., construction equipment, boats, etc.)
What happens if you inhale nitrogen dioxide?
Nitrogen dioxide poisoning is harmful to all forms of life just like chlorine gas poisoning and carbon monoxide poisoning. It is easily absorbed through the lungs and its inhalation can result in heart failure and sometimes death in severe cases.
What is DDT?
What is DDT? What is DDT? DDT, or dichlorodiphenyltrichloroethane, is a chemical compound with the formula C 14 H 9 Cl 5. Under standard conditions for temperature and pressure (STP), this chemical compound exists as a colourless and tasteless crystalline solid.
Is ddddt a persistent organic pollutant?
DDT is readily absorbed into soil and adsorbed onto sediment and is therefore known as a persistent organic pollutant (POP), meaning it is resistant to environmental degradation.
When was DDT banned?
The United States banned the use of DDT in 1972, but some countries still use the chemical. DDT has also been used in the past for the treatment of lice.
What is DDT in infobox?
Infobox references. . Dichlorodiphenyltrichloroethane, commonly known as DDT, is a colorless, tasteless, and almost odorless crystalline chemical compound, an organochlorine. Originally developed as an insecticide, it became infamous for its environmental impacts.