ABSTRACT
Fly ash (FA) production on a large scale from an expanding number of coal-fired power stations is increasingly becoming recognized as a hazard to the worldwide environment. Although conventional FA disposal methods frequently lead to landfills and groundwater contamination, FA management and disposal have become major concerns. While FA contains plant nutrients that can enhance agricultural production, it also contains high levels of toxic metals. Therefore, recycling FA is essential for converting harmful compounds and enhancing its nitrogen, phosphorus, and potassium (NPK) levels to improve agricultural yields. Researchers are now emphasizing biological approaches to FA remediation. Vermitechnology has emerged as an inexpensive and effective method to use selected earthworm species’ activities to transform FA’s heavy metal concentration into organic manure. Biologically modified FA is applicable for use in agricultural applications. This chapter aims to explore the correlation between the use of FA, its significance, benefits, and the potential for remediation using various species of earthworms. This chapter also discusses the presence of certain plant nutrients in FA.
