heavy metals pollution

. Its sources are sewage that includes organic matter, industries, agricultural chemicals, oil spill, etc. The major pollutants are the organic matter of the sewer, metallic substances and other inorgaic chemicals from the industries, hot water, oil, inorganic fertilizers and pe..

Biodegradable pollutants get broken down under natural conditions due to the action of micro-organisms. Therefore they are considerably less harmful. They behave as pollutants only in very large quantities. Example: excreta, sewage, pollen grains, etc. Non-biodegradable po..

Inorganic Chemicals and Metals Industrial and municipal waste waters and mine run offs cause various metals and metallic compounds to be released into water. These pollutants also enter the water bodies as acid rain and their sulphate and nitrate..

Domestic sewage Mining and industrial wastes Herbicides and pesticides Detergent and fertilisers Mineral oils and heavy metals Organic wastes Radioactive waste..

Metal salts, fertilizers, pesticides, oils, dyes, drugs, detergents, chlorinated materials, hydrocarbons et..

>It can lead to illness or even death in case of humans and animals. The growth of some plants can be retarded and this may cause them severe injury. It results in corrosion of metals, building materials and marble. Some pollutants distribute themselves over long distances in sh..

Industrial and municipal waste waters and mine run offs cause various metals and metallic compounds to be released into water. These pollutants also enter the water bodies as acid rain and their sulphate and nitrate ions make water acidic. Most inorganic compounds are..

Large quantity of solid wastes like unused and rejected chemicals (like calcium carbonate, magnesium sulphate, ferrous chloride, ferrous oxide, radioactive wastes, fly ashes, sludge, press mud, saw dust, bottles, plastic materials) unwanted industrial wastes generated during manufacturing processes..

The micro-particles of toxic metals and SO 2 gas present in the polluted atmosphere get adsorbed on metal particles rendering them highly toxic. These are released by various metal-finishing operation..

. The major problem of corrosion occurs with iron (or steel) as it is used as a structural material in industries like construction, infrastructure, bridges, rail transport power transmission, shipbuilding, automobiles, heavy industries etc. Aluminium, another useful structural metal..