tag:blogger.com,1999:blog-377485302011-11-27T15:18:55.901-08:00Blog about air pollution and air pollution control techniques. It also supply information for human and semi-academic surveys.Shadow_Drawernoreply@blogger.comBlogger131100tag:blogger.com,1999:blog-37748530.post-72740293006318706932010-03-07T10:38:00.000-08:002010-03-07T10:47:03.207-08:00

50 years after the industrial revolution people started to get sick from air pollution. Today millions of the factories, automobiles and vehicles continuosly release hazardous gases to athmosphere.In this post we air pollution control blog want to display some photos of air pollution.

Shadow_Drawernoreply@blogger.com4tag:blogger.com,1999:blog-37748530.post-18781030678876414892008-05-25T09:49:00.000-07:002008-05-25T09:51:26.561-07:00

• Immission measurements (Ambient Air Monitoring)– Concentration of the pollutants in the air the public breaths• Emission Measurements (Stack Gas Monitoring)– concentrations and/or emission rates from air pollution sourcesGeneral Ideas in Air Pollution Control• Improve Dispersion– Tall stacks– Intermittent control schemes– Relocate the plant

Shadow_Drawernoreply@blogger.com1tag:blogger.com,1999:blog-37748530.post-38903982925704797612008-02-28T14:42:00.000-08:002008-02-28T14:51:47.037-08:00

1- CyclonesA cyclon can collect about 25 micron particles by using centrifugal force.It has advantages for instance, it is easy to control and cheap.2- Electro Static PrecipitationElectro Static Precipitation is used for to collect very fine particles. It has 99% efficiency.3- Bag FiltersIt is also very efficient method of PM Control.4- Co-Flow Venturi ScrubbersVenturi Sucrubbers have

Shadow_Drawernoreply@blogger.com0tag:blogger.com,1999:blog-37748530.post-82768944102029476862007-09-05T05:01:00.000-07:002007-09-05T05:22:24.299-07:00

Volatile organic compounds generally are fuels that are easily combustible.Through combustion, which is synomonous with thermal oxidation and incineration , the organic compounds are oxidised to CO2 and water, while trace elements such as sulfur and chlorine are oxidised to species such as SO2 and HCL. Three combustion processes that control vapor emisions by destroying collected vapors to

Shadow_Drawernoreply@blogger.com1tag:blogger.com,1999:blog-37748530.post-19836774699808117732007-08-04T13:55:00.000-07:002007-08-04T15:02:13.152-07:00

Measurement of Nitrogen DioxideFor measuring nitrogen dioxide concentration in ambient air the chemiluminesence method is used primarly.Nitrongen dioxide concentrationas are determined indirectly from the difference between the NO and NOX concentrations in the atmosphere.These concentrations are determined by measuring tje light emitted from the chemiluminesece reaction of NO with O3 and the

Shadow_Drawernoreply@blogger.com1tag:blogger.com,1999:blog-37748530.post-1875661325413313642007-08-04T13:27:00.000-07:002007-08-04T13:46:52.372-07:00

The principal method used for measuring ozone is based on chemiluminescence.When ozone and ethylen react chemically,products are formed which are in exited electronic state.These products fluoresence,relasing light.The principal components are a cocstant source of ethylen,an inlet sample line for ambient air,a reaction chamber, a photomultuplier tube , and signal processesing circuitry.The rate

Shadow_Drawernoreply@blogger.com0tag:blogger.com,1999:blog-37748530.post-27655174149556759572007-08-04T08:43:00.000-07:002008-12-09T23:54:38.888-08:00

The primary method used for measuring carbon monoxide in US is based on nondispersive infrared photometry (NDIR).The analyser has a hot filament sorce of infrared radiation, a chopper , a sample cell, reference cell and a detector.The reference cell is filled with a non- infrared- absorbing gas,and the sample cellis continuously flushed with ambient air containnig unknown amount of CO.The

Shadow_Drawernoreply@blogger.com0tag:blogger.com,1999:blog-37748530.post-9902763309591157702007-08-04T04:15:00.001-07:002007-08-04T08:42:32.732-07:00

The two major goals for air pollutants are identification and quantification of a sample of ambient air.Hundreds of chemicals are present in the urban atmospheres.The gaseous air pollutantsmost commonly monitored are CO,OZONE,NO2,SO2 and nonvolatile organic ompounds(NMVOCs).

Shadow_Drawernoreply@blogger.com0tag:blogger.com,1999:blog-37748530.post-14534003507640664692007-08-04T03:49:00.000-07:002007-08-04T04:11:05.653-07:00

Ambient air quality data may be obtained through the use of mobile or fixed sampling networks and the use of integrated samplers or continuous monitors.Decisions regarding these monitoring techniques constitude the first important steps in design a monitoring network. Fixed VS Mobile SamplingIn fixed sampling systems , staions are permanent or at least long term instalations.In a mobile

Shadow_Drawernoreply@blogger.com0tag:blogger.com,1999:blog-37748530.post-45871302041013855362007-08-03T17:05:00.001-07:002007-08-04T03:47:14.001-07:00

Air pollution monitoring is conducted to determine either emission concentration or ambient air quality.The range of emission concentrations,temperature and pressures encountered is sometimes different than found in tha ambient air sampling situations.For that reason sampling and analysis technuques and equipment are different for each case.OBJECTİVES OF SAMPLİNG PROGRAMThe object would be to

Shadow_Drawernoreply@blogger.com0tag:blogger.com,1999:blog-37748530.post-91763633751276297802007-08-03T16:37:00.000-07:002007-08-03T17:03:10.244-07:00

The Federal New Source Review program requires that Best Avaible Control Technology(BACT) be appiled to major new sources and mjor modifications in attainment areas.Many local agencies also require that BACT be applied to smaller new sources of air pollution.BACT is a technology-based standard that can be met by available technology.Typically it is specified in an air permit as a maximum emission

Shadow_Drawernoreply@blogger.com0tag:blogger.com,1999:blog-37748530.post-79115662065081590332007-08-03T08:54:00.000-07:002007-08-03T09:02:56.129-07:00

In Bhopal, India, in December 1984, a release of methly isocyanate from a pessticide plant killed about 2500 people. Similar leakages of hydrogen sulfide from natural gas processing plants have killed houndreds of people. These tragic events attract wide attention.Their effects dont result from a single exposure these gases but from repeated exposure to low concentration for long periods.If we

Shadow_Drawernoreply@blogger.com0tag:blogger.com,1999:blog-37748530.post-1164191960457417352006-11-22T02:38:00.000-08:002006-11-22T02:39:20.476-08:00

This blog aims to inform the people about air pollution control techniques.

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