ACID RAIN -FORMATION & ECOLOGICAL EFFECT.--ROGER J CHENG ASRC UALBANY SUNY

*****ACID RAIN*****---FORMATION & ECOLOGICAL EFFECT---

A SCIENCE EDUCATION PRESENTATION for STUDENT, TEACHER & GENERAL PUBLIC

*****ACID RAIN*****---FORMATION & ECOLOGICAL EFFECT---

Presented by: Roger J. CHENG-ASRC UALBANY

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ABSTRACTIndustrial particulates and sub-micro crystals of sulfates are positively identified from field samples of acid

precipitation (cloud, fog and rain drop-lets) by a system of scanning electron microscope and energy dispersive x-ray spectrometer and also by dispersion staining microscopy. A Laboratory experiments confirm, by liquid ion chromatography, that gaseous SO/2 absorbed by water droplets, contaminated by few fine particulates of flyash from coal combustion, could be converted catalytically to sulfuric acid.

It is hypothesized that the formation of acid precipitation in the atmosphere is due to heterogeneous reaction of catalytic SO/2 oxidation on the surface of industrial particulates inside cloud droplets. A Heterogeneous catalysts, such as carbon, vanadium, manganese and iron associated with the surface of particulate, which are generated by electric power plants burning fossil fuels, especially coal, contribute to the complex surface chemical interaction, which result in the formation of acid droplets and sulfate crystals.

Formation of acid precipitations in the atmosphere have been suggested primarily to be oxidation of SO/2 by photochemical process in gas phase and by homogeneous reaction in solution. A But these mechanisms cannot explain for the observed high concentration of sulfates in the atmosphere. A Based on preliminary result of this study and technique developed from this experiment, It is suggested that a further investigation, the heterogeneous catalytic SO/2 oxidation on particulates surface in water droplets, may open up a pathway for more understanding the formation of acid precipitation and the generation of sulfate aerosols in the atmosphere.

Characterization of industrial particulate and sulfate aerosols from field sample of acid precipitation, chemical process of catalytic SO/2 oxidation and the effect of acid precipitation to our environment will be presented with illustrates.

presented at "the 7th World Clean Air Congress and Exhibition," Sydney, Australia, 25-29 August 1986.

FORMATION of ACID DROPLETS: HETEROGENEOUS SO/2 OXIDATION

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POWER PLANT EMISSION-CATALYSTS for ACID RAIN FORMATION

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*****ACID RAIN FORMATION*****CATALYTIC (FLYASH) OXIDATION of SO/2 in A WATER DROP

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中国科学技术大学 化学系 王其武教授 ------ 北京大学 化学系 胡昌媛教授美国纽约州立大学 大气科学研究中心 郑均华研究员

The EFFECT of POWER PLANT EMISSIONS on OUR ENVIRONMENT

HUANJING ZAZHI--Vol. 5, 1984

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*****ACID RAIN’S EFFECT on MARBLE*****

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*****ACID RAIN’S EFFECT on MARBLE*****

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*****ACID RAIN’S EFFECT on MARBLE*****

*****ACID RAIN’S EFFECT on PLANTS*****

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*****ACID RAIN & PLANT DAMAGE*****

*****ACID RAIN & PLANT DAMAGE*****

中美大气环境科学交流CHINA CONNECTION-SCIENTIFIC ...

*****WORKSHOP on ACID RAIN & our

ENVIRONMENT*****

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INDUSTIAL POLLUTION & ECOLOGICAL EFFECT

POWER PLANT EMISSIONS AFFECT our CLIMATE

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http://rogerjcheng.com/The%20MICRO-WORLD%20in%20OUR%20ENVIRONMENT.htm

WEB: www.rogerjcheng.com“The MICRO-WORLD in the ATMOSPHERE”

A SCIENCE EDUCATION PRESENTATION for STUDENT, TEACHER & GENERAL PUBLIC

SNOW, ICE CRYSTALS & CLOUD SEEDING***NEXT

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