The key air pollution - causing contaminant is sulphur, which
creates oxide gases and particles, both of which are harmful to human health.
Not exact matches
The NTU scientists
create micro-sized
gas bubbles coated with cancer drug particles and iron
oxide nanoparticles, and then use magnets to direct these bubbles to gather around a specific tumour.
At a conversion plant, uranium
oxide combines with fluorine
gas to
create uranium hexafluoride (UF6), a chemical compound that is a powder at room temperature and a
gas when heated.
Presumably, the strong stellar wind emitted by giant stars eventually blows the titanium
oxide out of the star's outer regions (along with hydrogen and helium
gases and dust made of elements and molecules like carbon) into interstellar space, until vigorous convection brings out more titanium and oxygen that are
created from nuclear processes deeper in the star.
The
gases responsible for
creating low - level ozone are carbon monoxide, the
oxides of nitrogen (all found in car exhaust fumes), methane, and other hydrocarbons.
Water vapour, carbon dioxide, methane and nitrous
oxide — the so - called greenhouse
gases (GHGs) in the Earth's atmosphere -
create a natural «greenhouse effect» by «trapping» heat between the Earth's surface and the Troposphere (the atmospheric layer 5 to 10 miles above the surface).
The longer wavelength (infrared) radiation
created there is reflected upwards, and then is absorbed by clouds and the greenhouse
gases (GHGs include carbon dioxide (CO2), methane (CH4), nitrous
oxide (N2O), etc.).
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.
And in every case, it was determined that using these sources to
create electricity for PHEVs was more efficient and
created less total greenhouse
gases (GHGs), volatile organic compounds (VOC), carbon monoxide (CO), nitrogen
oxides (NOx), fine particulate (PM2.5) and sulfur
oxides (SOx).
Stanford reports that two of their engineers — one a rocket engineer who has spent five years
creating thrusters that run on nitrous
oxide and the other an expert in wastewater management — have
created a design that can carve down the carbon footprint of wastewater treatment plants with «a new sewage treatment process that would actually increase the production of two greenhouse
gases - nitrous
oxide (aka, «laughing
gas») and methane - and use the
gases to power the treatment plant.»
For example, researchers at Stanford University came up with a smart way to cut the carbon footprint of wastewater treatment by taking advantage of the nitrous
oxide (aka, «laughing
gas») and methane
created during treatment for powering the facilities.