A study on components of fly ash of different locations and its utilization for production of improved quality materials: A Review

Abstract

During the combustion of coal for energy production an industrial by-product is generated known as Fly Ash, is recognized as a hazardous environmental pollutant. Globally, a lot of considerable research has been undertaken by the researchers and scientists on this subject because of various environmental problems caused by Fly Ash. In recent past it is only being treated as waste and a source of air and water pollution but is in fact a resource material and has also proven its worth over a period of time. The present paper reviews on the potential applications for coal Fly Ash as a eco-friendly raw material: in construction of building materials like bricks and Portland cement, in painting application, application in TL Dosimetries, as a soil amelioration agent in agriculture, in the synthesis of zeolite, in the synthesis of geo-polymers, as an adsorbent for flue gases, as a removal agent for toxic metals, dyes, organic & inorganic compounds from waste water and for the extraction of the metals. Since at different locations the property of Fly Ash varies; thus we required analyzing its variability parameter for utilizing it effectively. Hence, before the utilization of Fly Ash as a eco-friendly resource material, it is necessary to study properties of Fly Ash from different sources, so that it can be used beneficially. Thus Fly Ash management is a cause of concern for the future. This article attempts to highlight the management of waste Fly Ash to make use of this solid waste, in order to save our environment.