Characterization of Fly Ash for Their Effective Management

Abstract

Coal based thermal power plants more or less producing 150 tons of fly ash each year. Endeavours to utilize fly ash powder have come to just a twenty to thirty percent reutilization rate. Around 80 percent of the power generation is from coal based power plants; rest on gas and oil. As most of the power plants are using bituminous coal and sub-bituminous coal leading towards high production of fly ash. Due to high percent of ash in the coal give rise to large volumes of fly ash. Utilization is becoming huge problem in India. The country’s dependence on coal for power generation has unchanged so we need to look at the strategies to encourage and establish technological concepts to utilize fly ash in bulk. We have plenty of uses of fly ash, but we need to analyse the uses such that effective utilization of fly ash takes place. Production of fly ash depends upon the coal source, plant operations and many more factors. The various fly ash characteristics are discussed including classifications, physical characteristics, chemical properties and chemical compositions. In spite of the fact that far reaching examination has been performed on the utilization of fly ash and took environmental concerns also a major problem like mobilization of toxic elements, biota impact, microbial impact, handling dangers, and pertinent regulations. Finally, extensive research has done to reutilization of fly ash and recommendation is provided to cover deficiencies found in the literature.