Kinetic Modelling Of Degradation Of Phenolic
Compounds In Leachate
Author(s)
E. Sekman, G. Varank, A. Demir, S. Top & M. S. Bilgili
Abstract
Leachates from municipal solid waste (MSW) contain a large number of
compounds many of which are not hazardous to health and nature as they represent
degradation products ranging from small volatile acids to refractory fulvic and
humic-like compounds and some of which are hazardous compounds including
aromatic compounds, halogenated compounds, phenolic compounds, pesticides,
heavy metals, and ammonium. Phenolic compounds released into the environment
are of high concern because of their potential toxicity. These compounds found in
the leachate include phenol, cresols and substituted and chlorinated phenols that
have been designated as priority pollutants by the U.S. Environmental Protection
Agency. Phenolic compounds degrade under anaerobic conditions in landfill sites.
In this study, the degradation of phenolic compounds in leachate has been
investigated by using leachate recirculated anaerobic reactors representing
bioreactor landfills. Wastes representing Istanbul municipal solid wastes were
disposed in the reactors. Phenolic compounds of leachate are analyzed by using
Gas Chromatograph. Before injection of leachate to the Chromatograph,
contaminants in the leachate are extracted by using solid phase micro extraction
(SPME) method. A first-order kinetic model was adopted to represent the
microbial degradation of phenolic compounds under anaerobic conditions.
Keywords: modelling, leachate, phenolic compounds, degradation.
1 Introduction
Wastewater flow through municipal solid wastes disposed at landfill sites and
removal of soluble compounds by the non-uniform and intermittent percolation
of water through the refuse mass result in the production of leachate. Leachate
Keywords
modelling, leachate, phenolic compounds, degradation
Related Book
Other papers in this volume
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