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Air pollutants I · software · modelling emissions

                 

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Atmospheric pollutants I

Waste matter is released into the atmosphere from a variety of pollutant sources. Atmospheric pollutants area serious threat to health. The pollutants present in the atmosphere are: particulate solids, droplets of liquids and gases. It is convenient to classify pollutants as primary pollutants which are emitted directly into atmosphere and secondary pollutants which are formed in the atmosphere from primary pollutants. 

Particles

Parcicules, alternately referred to as Particulate Matter (PM). Aerosols or fine particles are tiny particles of solid or liquid suspended in the air. They range in size from 10 nm (nanometer) to 100 um (micrometer) in diameter. The composition of fine particles depends on the source. The deposition site is a function of particle size. Larger particles are generally filtered by the nose and do not cause problems, but particulate matter smaller than about 10 micrometres (PM10) can settle in the lungs and cause health problems. Particles emitted from modern vehicle engines are typically in the size range of 100 nanometres.

Lead 

Lead enters the air from lead tetraethyl which is added to petrol as an antiknock. Lead from atmosphere pollutes the land. Vehicles exhausts are the chief source of lead pollution.

Carbon monoxide

Carbon monoxide, which is primarily emitted from combustion process, particularly from vehicle exhausts; the highest concentrations are generally found at roadside locations. Inhalation of high levels of carbon monoxide can cause headaches and respiratory problems. Carbon monoxide has many common sources. The exhaust of the internal combustion engine, when burning a carbon-based fuel contains carbon monoxide. In the home, carbon monoxide (CO) gas forms when fuels like natural gas or wood do not burn completely in appliances such as air heaters, ranges and ovens.  

Sulphur dioxide

Sulfur oxides, which causes acid rain is caused from the burning of fuel containing sulfur, mostly at power plants. Sulphur dioxide reacts with air doplets to form acid rain.

 

 

 

Pollution map (XZ-Plane) produced by continuous discharge in this region. The fucshia lines represents two different stacks (position of two different point sources) in a XZ-Plane. The red colour represents high pollutant concentrations. The  green colour represents the ground and the surface topography. software · modelling emissions

 

Pollution map (XY-Plane) produced by continuous discharge in a road region. The fucshia squares represent the road line (position of the different point sources) in a XY-Plane. The red colour represents high pollutant concentrations. software · modelling emissions

 

software · modelling emissions

DISPER software solutions: This application has been used in great number of environmental reports, air pollution courses and air pollution studies in the last years. We currently have users in more than 50 countries.

Peterborough - emissions from motor vehicles - gasoline vehicle emissions - car emissions -

Plymouth - vehicle emmissions - co2 emissions vehicles - vehicle emissions standardcar emission -

Portsmouth - vehicle emissions inspections -

Preston - carbon dioxide emissions - co2 emissions - truck emissions -

Ripon - emissions - diesel emissions - emissions test -

Salford - reduce emissions - carbon emissions - fuel economy car -

Salisbury - hybrid cars emissions - vehicle air pollution - hybrid emissions -

Sheffield - vehicle pollution - vehicle pollutants - vehicle check -

St Albans - automobile emissions - vehicle epa - air pollution emissions -

St David's - vehicle inspections - gasoline emissions - colorado emissions -

Stirling - motorcycle emissions - vehicle fuel economy -

Stoke-on-Trent - virginia vehicle emissions - vehicle emissions tests - vehicle emission tests -

Sunderland - vehicle emissions calculator - vehicle emissions inspection program - zero emission vehicle mandate -

Swansea - vehicle emission regulations - illinois vehicle emission testing - washington vehicle emission -

Truro - vehicle emission ratings - arizona vehicle emission - vehicle emissions control -

Wakefield - vehicle carbon dioxide emissions - vehicle emissions tax - maryland vehicle emissions test -

Wells - different types of vehicle engine - different exhaust emissions - vehicle emission factors -

Westminster - vehicle emissions table - vehicle emissions testing locations - diesel vehicle emissions -

Winchester - problems in reducing harmful vehicle emissions - vehicle emission standard -

Wolverhampton - ontario vehicle emissions - emissions by vehicle - il vehicle emissions -

Worcester - california vehicle emission standards - motor vehicle emissions testing - vehicle carbon emission -

York - car vehicle emissions - low emissions vehicles - hybrid vehicle emissions -

 

 

Bradford - air dispersion modelling - air pollution modeling - model air shows - air model - air fix models -

Brighton & Hove - model hot air balloons - air pollution modelling - air dispersion model -

Bristol -  epa air modeling - air conditioning model number - indoor air modeling -

Cambridge -  NH3 air pollution modeling in highways - HNO3 air pollution dispersion modeling air plane models

Canterbury -  model air compressor - combat air model - model hot air ballon -

Cardiff -  air model firearms - air pollution models - guideline on air quality models -

Carlisle - gaussian modeling - wind modeling - air atmosphere - modeling models - air recipe - sculpey modeling -

Chester -  NH3 air pollution modeling in highways - HNO3 air pollution dispersion modeling air dispersion models -

Chichester -  air liquid - industrial modeling - ceramic modeling - air sculpture - air recipes -

City of London -  plume modeling - sculpting modeling - southern modeling - fimo modeling epa modeling -

Coventry -  plasticine modeling - air gas - sculpture modeling - air polution - claymation modeling -

Derby - HNO3  modeling clay modeling - air clay - paper modeling - diesel modeling - air whistles - air pollution -

Derry -  air dry - air baker - health modeling - air pressure - air roaster - environmental modeling -

Dundee - liquid modeling - air stack - stack modeling - air hardening - fuel modeling -

Durham -  atmospheric modeling - craft modeling - air southern - air ball - atmosphere modeling - indoor modeling -

Edinburgh -  carbon dioxide dispersion modeling - NH3 air pollution modeling in highways -

Ely -  HNO3 air pollution dispersion modeling air pollutants - dispersion modeling - air plume - 3d modeling -

Exeter -  air paper - air 3d - air pollutant - air monitoring - air craft -

Glasgow -  emission modeling - temperature modeling - gas modeling - water modeling -

Gloucester -  control air - dust modeling - process modeling - air dispersion - air source -

Hereford - NOx  model - VOC air pollution modeling in plants - Cl2 air pollution dispersion modeling air industrial -

Inverness -  NO air pollution calculation - SOx air pollution dispersion simulation near hospitals -