PMID: 11934110Apr 6, 2002Paper

Leachability of elements from sub-bituminous coal fly ash from India

Environment International
T PraharajS Tripathy

Abstract

Environmental concerns regarding the potential contamination of soil, surface and ground water due to the presence of soluble metal species in the ash pond leachate is of great importance. Serial batch leaching was carried out simulating the rainwater condition of the study area to understand the behaviour of elements during leaching. The leachates were analysed for the elements Al, Ca, K, Mg, Na, P, S, Si, As, Ba, Fe, Mn, Mo, Ti, V, Pb, Zn, Co, Cr, Cu, Ni and Cd by inductively coupled plasma optical emission spectrometer (ICP-OES). It was found that Cd, Co, Cr and Ni did not leach from the ash while Cu and Pb concentrations were insignificant in the leachate regardless of liquid to solid (L/S) ratio. Most of the elements showed maximum concentrations at lower L/S ratio and then decreased with increasing L/S. The total cumulative concentrations of As, Mn and Mo were found to be higher than the World Health Organization (WHO) recommended values for drinking water while the concentrations of Fe, Mn and As exceeded the maximum allowable concentrations prescribed by the United States Environmental Protection Agency (USEPA). The pre and the post leached ash samples were analysed for morphology, specific surface area and mineralogica...Continue Reading

References

Feb 1, 1983·Environmental Science & Technology·S H WeissmanG J Newton

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Citations

Oct 24, 2006·Environmental Monitoring and Assessment·Gurdeep SinghM Sunderarajan
Aug 20, 2009·Environmental Monitoring and Assessment·Peter A HesbachSteven C Lamey
Nov 8, 2003·Water Research·Pavel JanosMilena Rýznarová
Nov 13, 2013·Environmental Science and Pollution Research International·P LucchiniD L Jones
Mar 22, 2013·Environmental Geochemistry and Health·S V M MaharajD N Szilagyi
Mar 30, 2012·International Journal of Health Care Quality Assurance·Peter Ikome Kuwoh MochungongMorten Sodemann
Aug 13, 2010·Waste Management·Amr S MeawadYoncho G Pelovski
Nov 17, 2009·Journal of Environmental Management·Lal C Ram, Reginald E Masto
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Oct 7, 2004·Waste Management & Research : the Journal of the International Solid Wastes and Public Cleansing Association, ISWA·Pappu AsokanShyam R Asoletar
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Dec 1, 2011·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·Ojo O FatobaEmmanuel I Iwuoha
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