Ternary blends containing demercurated lighting phosphor and MSWI fly ash as high-performance binders for stabilizing and recycling electroplating sludge

J Hazard Mater. 2008 Aug 15;156(1-3):118-22. doi: 10.1016/j.jhazmat.2007.12.003. Epub 2007 Dec 7.

Abstract

This paper describes the solidification and stabilization of electroplating sludge treated with a high-performance binder made from portland type-I cement, municipal solid waste incineration fly ash, and lighting phosphor powder (called as cement-fly ash-phosphor binder, CFP). The highest 28-day unconfined compressive strength of the CFP-treated paste was 816 kg/cm(2) at a ratio of cement to fly ash to lighting phosphor powder of 90:5:5; the strength of this composition also fulfilled the requirement of a high-strength concrete (>460 kg/cm(2) at 28 days). The CFP-stabilized sludge paste samples passed the Taiwanese EPA toxicity characteristic leaching procedure test and, therefore, could be used either as a building material or as a controlled low-strength material, depending on the sludge-to-CFP binder ratio.

MeSH terms

  • Carbon / analysis*
  • Coal Ash
  • Conservation of Natural Resources*
  • Particulate Matter / analysis*
  • Phosphorus Compounds / analysis*
  • Sewage*
  • Toxicity Tests

Substances

  • Coal Ash
  • Particulate Matter
  • Phosphorus Compounds
  • Sewage
  • Carbon