Critical Review of Cement-Based Stabilisation/Solidification Techniques for the Disposal of Hazardous Wastes.

Abstract

The materials used in stabilisation/solidification processes (OPC, PFA and sodium silicate) have been reviewed in terms of their basic composition and chemistry. The addition of inorganic wastes to OPC and PFA has been demonstrated to affect early hydration and has led to the development of the protective coating theory and sorption of heavy metals by PFA as the principal factors involved in stabilization. The aqueous chemistry of OPF, PFA, PFA/OPC and PFA/OPC/SILICATES has also been reviewed and has illustrated the chemical reactions taking place during the first hour of the stabilisation process. Methods to improve the efficiency of the Sealosafe processed have been highlighted particularly with respect to supernatant formation. New developments such as the use of clays have been highlighted.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1986
Accession Number
ADA184427

Entities

People

  • Alistair Clark

Tags

Communities of Interest

  • Biomedical

DTIC Thesaurus Topics

  • Aromatic Compounds
  • Chemical Products
  • Chemical Reactants
  • Chemical Reaction Properties
  • Chemical Reactions
  • Chemical Synthesis
  • Chemistry
  • Crystal Lattices
  • Hazardous Waste
  • Mechanical Properties
  • Microcapsules
  • Organic Chemistry
  • Phyllosilicates
  • Physical Properties
  • Spectra
  • Transitions
  • Waste Disposal Facilities

Fields of Study

  • Chemistry
  • Materials science

Readers

  • Agricultural Chemistry/Soil Science
  • Pavement Materials Engineering.
  • Systems Analysis and Design