It hardly needs to be emphasized that the environment has assumed the highest
priority on the world agenda and the major global environment concerns which we
are facing today can not be overlooked any longer. The depletion of the ozone
layer, increase in the level of carbon dioxide (global warming), and acid rains
are the most serious environmental issues facing as today. Modern industrial
activities have severely interfered with the natural environment either through
deforestation or through discharge of solid and liquid effluents and gaseous
emissions. Power generation, though important in achieving economic self
reliance, its interface with the natural surroundings has led to serious concern
the world