E1+Air+Pollution

__Air Pollutant﻿__
Primary pollutants are Carbon monoxide, oxides of nitrogen, sulfur dioxide, particulates and hydrocarbons. Secondary pollutants is when primary pollutants reacts with in the air. Hydroxyl radicals (OH∙), Nitric acid (HNO3), Radicals in general, PAN (peroxyacylnitrate)
 * Air pollutant** is a substance that are not normally present or are present in unnatural proportions.

The source, effect and methods of reduction of each pollutant found in air (:﻿ [|Youtube video for visual and listening learners!] 2CH4 + 3O2 --> 2CO + 4H2O ||= Car exhausts and incomplete combustions C8H18 + 8.5O2 --> 8CO + 9H2O ||= Prevents haemoglobin from carrying oxygen ||= Catalytic converter || (NOx) ||= Electrical storms ||= Factories, power plants and transportation N2+O2--> 2NO ||= Respiratory irritant ||= Catalytic converter || S + O2 --> SO2 ||= Respiratory irritant ||= Alkaline scrubbing, Fluidized bed combustion ||
 * = =====Pollutant===== ||= =====Natural source===== ||= =====Man made source===== ||= =====Effect on health===== ||= =====Methods of reduction===== ||
 * = Carbon Monoxide ||= Incomplete oxidation of methane
 * = Nitrogen Oxide
 * = Sulphur Dioxide ||= Oxidation produced by volcanoes ||= Combustion of sulfur containing coal and smelting of sulfide ores
 * = Particulates ||= Found in soot, ash, dust, sand, smoke, pollen, bacterial ||= Burning of fossil fuels ||= Can cause lung disease, emphysema, bronchitis (cancer) ||= Sedimentation chambers ||
 * = VOCs ||= Plants (like rice—so real plants); terpenes ||= Unburned or burned gasoline ||= Can form toxic secondary pollutants (PAN) ||= Catalytic converter ||

The different methods and description of removing pollutants (: Sulfur dioxide removed from exhaust of coal burning plants by 'scrubbing' with an alkaline slurry of limestone. Fluidized bed combustion burns the coal on bed of limestone which removes the sulfur as the coal burns ||
 * Catalytic converters || Hot exhaust gases are passed over a catalyst of platinum or palladium and oxidize carbon monoxide and VOCs. This will catalyze the reaction between carbon monoxide and nitrogen oxide. 2CO (g) + 2NO (g) --> 2CO2 (g) + N2 (g) ||
 * Electrostatic precipitation || Particulates are charged and attracted to electrodes, then removed. ||
 * Lean Burn Engines || Ratio of NOx to CO altered; one reduced but other increased ||
 * Thermal Exhaust reactor || CO reacted with excess oxygen to produce CO2 ||
 * Sulfur Dioxide || Sulfur physically removed by crushing the coal
 * Electrostatic preciptation || Charged particulates are attracted to oppositely charged electrodes which are shaken periodically, so the aggregated particulates fall to the bottom and can be removed ||