Volume No. 4 Issue No.: 1 Page No.: 55-61 July-Sept 2009

 

FE-SEM EDAX STUDIES ON FLY ASH PARTICLES

 

P.G Gaikwad* and Deepak Khare

Department of Water Resources Development and Management, Roorkee (INDIA)

 

Received on : June 30, 2009

 

ABSTRACT

 

Over 75% of the total installed power generation in India is coal based. India as well as all other countries in the world are facing big challenge of fly ash disposal in environmentally safe manner. Utilisation of fly ash is the one way to solve this problem. Presently as per the figures of Ministry of Environment and Forest Government of India, 30% of ash is being used in fillings, embankments, construction, blocks and tiles etc.

Balanced ash is disposed in the form of slurry in ash pond/lagoon. When ash water interaction is responsible for leaching of metals, which is a concern for possible soil and groundwater contamination. Morphology can affect physical and chemical properties of ash, which in turn relate to environmental and technological aspects of fly ash disposal and utilization. Morphological studies were carried out with the help of Field Emission-Scanning Electron Microscopy (FE-SEM).Apart from solid spherical particles, cenosphere and plerosphere were identified. With the help of Energy Dispersive X-ray (EDAX) analysis trace elements were identified and their health aspects were discussed.

 

Keywords : Fly ash disposal, SEM, Morphology, Trace elements, Health aspects.

 

 

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