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Thursday, October 5, 2017

Importance of water and air

Importance facts of water

Fresh water is probably the most important resource in the world since it is required for :

Sustenance of human life - physiological processes,sanitation Agriculture activities - metabolic processes for food production,evaporative cooling of earth

Industrial needs - Heat transfer processes, chemical reactions, nuclear fusion power The volume of business associated with the production and usage of water in india is probably the third largest industrial business next to steel and petroleum which incidentally are also the largest ccustomers for water.

The per capita consumption of water for health and sanitation need is:

India Rural  7-20 tons/year
Urban 10-50 tons/year
Average 15 tons/year
USA 200 tons / year

Sources of water

All of the water supplies at present come from precipitation which averages 115cm of water over the entire 806 million acres of india.This is compared with 75 cm average for the USA. The rainfall is largely confined to a period of 2-3 months during the monsoons except in the northwestern region of the Himalayan mountains where the snows of winter gradually melt throughout the remainder of the year. This predominant highly seasonable rainfall requires storage reservoirs such as dams to aid in levelling surface flow throughout the year.

IMPORTANCE FACTS OF SULFUR AND SULFURIC ACID


Sulfur is the basic raw material for manufacture of sulfuric acid,

which is considered the barometer of india's industrial progress.
In more advanced countries this rule is no longer valid as the overall industry grows rapidly with sulfuric acid virtually stable.

Current production is at the same level as that of the USA in about 1900 and the per capita consumption of acid in india is only 4% of that in the USA. These figures give indication of the immense development possibilities for india.


Raw material sources of sulfuric acid

Sulfuric acid may be produced from

elemental sulfur, pyrites, hydrogen sulfide as contained in sour gas and petroleum, waste gases from the burning of fuel and smelting operations such as pyrites of copper, iron , zinc and lead.

Elemental Sulfur, pyrites and sulfides are the basic raw materials for production of sulfuric acid in india.

Sulfuric acid produced by burning of fuel and smelting operations is called by-product sulfuric acid.