Acid Precipitation Flashcards
Acid precipitation
Rain snow or fog or dew has a ph less than 5.6
Scrubbers
Devices that are found in tall industrial smokestacks that release sulphuric dioxide gas and nitrogen oxide gas such as coal fueled power plants
They removed gases using a specially formulated chemical mixture o
Catalytic converters
A device that uses nitrogen oxides in achemical reaction to convert them into nitrogen and oxygen has
Heavy metals
Metal elements that have a high atomic mass
Acid leaching
Process in which acids dissolve metals found in soil
Main causes of acid precipitation
Sulphuric dioxide and nitrogen oxides in the atmosphere
Forms of nitrogen oxides
N2O
NO2
N2O4
Formation of sulphuric acid
Sulphuric acid plus oxgygen equal sulfite
Sulfite plus water equal sulfuric acid
Formation of nitric acid
Nitrogen dioxide gas dissolved in water droplets
Source of gases
Electricity production in coal fired power plants Iron and steel production Fertilizer production Pulp and paper production Automobile engines
Lakes in Alberta and Saskatchewan
Are sourruonded by limestone protects form acid precipitation
Not the same for Ontario
Add lime to maintain lakes calcium hydroxide
However is very expensive and only good for short term
How a scrubber works
Gases contact chemical mixture
Products are wet slurry or solid
Have filter go collect and then recycled
Heavy metal accumulation causes
Kidney disease
Disease of lungs
Bone defects
Damage to nervous system development
Iron sulphide
Pyrite or fools gold
Good use of acid leaching
Soil is removed and use acid to dissolve metals collected in an acidic solution
Raise ph to form precipitate