Municipal solid-waste incinerator fly ash

Journal Article · Sat May 01 00:00:00 EDT 1993 · Journal of Geotechnical Engineering; (United States)

DOI:https://doi.org/10.1061/(ASCE)0733-9410(1993)119:5(811)· OSTI ID:6526138

Goh, A T.C. ^[1]; Tay, Joohwa ^[2]

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1. Swinburne Univ. of Technology, Melbourne (Australia)
2. Nanyang Technical Univ. (Singapore)

Many highly urbanized cities are faced with the problem of disposal of municipal solid waste because of the scarcity of land available for landfilling. One possible solution is the incineration of the municipal solid waste. After incineration, about 20% by weight of fly ash and other residues are produced. Investigations into the physical and engineering properties of the fly ash derived from municipal solid-waste incineration indicate that the material is a potential source of fill material, with low compacted density and high strength. The fly ash was relatively free draining, with permeability of the same order of magnitude as coarse grained materials. The use of the fly ash as an admixture in the stabilization of a soft marine clay showed improved undrained shear strengths and lower compressive properties. Leachate tests on the samples of fly ash initially indicated trace quantities of cadmium and chromium in excess of the acceptable drinking-water limits. After leaching for 28 days, the concentrations fell below the drinking-water limits. Lime and cement can be used to stabilize the fly ash. The concentrations of heavy metals in the leachates of lime and cement treated fly ash were nondetectable.

• OSTI ID: 6526138
• Journal Information: Journal of Geotechnical Engineering; (United States), Vol. 119:5; ISSN 0733-9410
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
FLY ASH
LEACHING
MECHANICAL PROPERTIES
MUNICIPAL WASTES
WASTE MANAGEMENT
COMBUSTION
FEASIBILITY STUDIES
INCINERATORS
LEACHATES
WATER POLLUTION
AEROSOL WASTES
ASHES
CHEMICAL REACTIONS
COMBUSTION PRODUCTS
DISPERSIONS
DISSOLUTION
MANAGEMENT
MIXTURES
OXIDATION
POLLUTION
RESIDUES
SEPARATION PROCESSES
SOLUTIONS
THERMOCHEMICAL PROCESSES
WASTES
540220* - Environment
Terrestrial- Chemicals Monitoring & Transport- (1990-)
320604 - Energy Conservation
Consumption
& Utilization- Municipalities & Community Systems- Municipal Waste Management- (1980-)