In situ heavy metal attenuation in landfills under methanogenic conditions

The purpose of this research was to determine the fate and behavior of heavy metals co-disposed with municipal waste under methanogenic conditions. Two landfill simulating reactors, one with leachate recirculation and the other without, were operated in a constant room temperature at 32 °C. These re...

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Bibliographic Details
Published inJournal of hazardous materials Vol. 99; no. 2; pp. 159 - 175
Main Authors Suna Erses, A., Onay, Turgut T.
Format Journal Article
LanguageEnglish
Published Amsterdam Elsevier B.V 25.04.2003
Elsevier
Subjects
Applied sciences
Chemical Precipitation
Co-disposal
Exact sciences and technology
General treatment and storage processes
Heavy metal attenuation
Leachate recirculation
Metals, Heavy - chemistry
Methane - analysis
Methane - chemistry
Oxidation-Reduction
Pollution
Refuse Disposal
Solid waste stabilization
Sulfides
Sulfides - chemistry
Temperature
Wastes
Asia
Turkey
Sulfides
Solid waste stabilization
Heavy metal attenuation
Co-disposal
Leachate recirculation
Biodegradation
Waste dumping
Pollutant behavior
Urban waste
Methanogenesis
Solid waste
Lixiviation
Hazardous waste
Waste disposal
Heavy metal
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Summary:The purpose of this research was to determine the fate and behavior of heavy metals co-disposed with municipal waste under methanogenic conditions. Two landfill simulating reactors, one with leachate recirculation and the other without, were operated in a constant room temperature at 32 °C. These reactors were filled with shredded and compacted municipal solid waste having a typical solid waste composition of Istanbul region. After the onset of the methanogenic conditions, the selected heavy metals including iron, copper, nickel, cadmium and zinc were added according to the amounts suggested for co-disposal under the directives of the Turkish Hazardous Waste Control Regulations. The results of the experiments indicated that about 90% of all heavy metals were precipitated from the reactors within the first 10 days due to the establishment of highly reducing environment and the formation of sulfide from sulfate reduction which provided heavy metal precipitation. No inhibition to the biological stabilization was observed.
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ISSN:0304-3894
1873-3336
DOI:10.1016/S0304-3894(02)00354-0