Title
The useful application of sulphur-bound waste materials
Author
Alkemade, M.M.C.
Koene, J.I.A.
TNO Milieu, Energie en Procesinnovatie
Publication year
1996
Abstract
An immobilization process is described which is based on sulphur (instead of cement) as a binding agent for the treatment of hazardous waste materials. Elemental sulphur is able to bind chemically metals such as mercury and, to a lesser extent, lead as metal sulphides. Furthermore, sulphur forms a compact solid mass that has a low permeability, and consequently can be leached only to a limited extent. As a result of the addition of sulphur the compressive strength of the pelleted waste materials tested also improves considerably. The waste materials were residues from the incineration of municipal solid waste. Sulphur can be processed in more or less the same way as asphalt, as it is processed at about 130°C. The amount of sulphur that was added ranged from 25 to 35%. Details of the leaching properties of sulphur-bound waste materials are given together with an outline description of the process. The results suggest that, with some additional treatment, the process may produce artificial gravel suitable for building purposes.
Subject
Binders
Byproducts
Cements
Compressive strength
Gravel
Hazardous materials
Leaching
Materials testing
Mechanical permeability
Sulfur
Waste incineration
Waste utilization
Artificial grave
Binding agent
Immobilization process
Municipal solid waste
Industrial waste treatment
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DOI
https://doi.org/10.1016/s0956-053x(96)00041-4
TNO identifier
233607
Publisher
Elsevier Science Inc., Tarrytown, NY, US
ISSN
0956-053X
Source
Waste Management, 16 (1-3), 185-188
Document type
article