Journal
BIORESOURCE TECHNOLOGY
Volume 97, Issue 9, Pages 1136-1147Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2004.09.004
Keywords
fly ash; soil amendment; plant productivity
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Fly ash, a. resultant of combustion of coal at high temperature, has been regarded as a problematic solid waste all over the world. Many possible beneficial applications of fly ash are being evaluated to minimize waste, decrease cost of disposal and provide value-added products. The conventional disposal methods for fly ash lead to degradation of arable land and contamination of the ground water. However fly ash is a useful ameliorant that may improve the physical, chemical and biological properties of problem soils and is a source of readily available plant macro and micronutrients. In conjunction with organic manure and microbial inoculants, fly ash can enhance plant biomass production from degraded soils. Detailed studies oil the nature and composition of fly ash, conducted during the latter half of the 20th century have helped in repeatedly confirming the various useful applications of this hitherto neglected industrial waste. The purpose of this paper is to review the available information oil various attributes of fly ash and explore the possibility of exploiting them for agronomic advantage. (c) 2004 Elsevier Ltd. All rights reserved.
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