Leachability of heavy metals in Greek fly ash from coal combustion

作者: K. Fytianos , B. Tsaniklidi , E. Voudrias

DOI: 10.1016/S0160-4120(98)00027-0

关键词:

摘要: A laboratory leaching test was used to determine the potential mobility of Pb, Cd, Cr, Cu, Zn, Ca, and Mn in fly ash samples, originated from four locations Northern Greece, order assess their leachability when these wastes are disposed of. The cascade at liquid solid ratios (LS) ranging between 5 100. All samples exhibited strong alkaline reaction, as indicated by pH values > 11.75 LS = 10 contact time min. In general, Ca showed highest lowest all samples. percentage leached amounts follows trend Cd Cr Pb Zn Cu for Kardia Agios Dimitrios, sample Ptolemais, Amideo. six metals studied (Cd, Mn, Cu) Amideo an increase leachate concentration leachant reduced 8 4. followed maximum extractability values. least leachable components were Mn.

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