Chemical neutralization of acidic wastes using fly ash in Israel

Mehmet Polat, Eli Lederman, Ithamar Pelly, Haim Cohen

Research output: Contribution to journalArticlepeer-review

16 Scopus citations


Israeli fly ash is highly basic when exposed to water, due to the very low sulfur content allowed in coal imports because of the strict environmental regulations (with respect to SOx emissions). Thus, the fly ash is a potential chemical neutralization/fixation agent for acidic wastes. In this study, coal fly ash has been examined as a neutralization/fixation agent for acidic sludge produced from the regeneration of used engine oils. The initial results show that the fly ash can be used as a very efficient neutralization/fixation agent of the sludge. Furthermore the trace elements and the organic components are efficiently fixed within the fly ash particles. The product can serve as a good aggregate in concrete production. The neutralization and fixation processes are discussed in detail.

Original languageEnglish
Pages (from-to)377-381
Number of pages5
JournalJournal of Chemical Technology and Biotechnology
Issue number3
StatePublished - 2002
Externally publishedYes


  • Acidic sludge
  • Fixation
  • Fly ash
  • Heavy metals
  • Neutralization


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