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Waste Manag


Title:Leachate recirculation effects on waste degradation: study on columns
Author(s):Francois V; Feuillade G; Matejka G; Lagier T; Skhiri N;
Address:"Laboratoire des Sciences de l'Eau et de l'Environnement, ENSIL, 16 rue Atlantis, 87060 Limoges Cedex, France"
Journal Title:Waste Manag
Year:2007
Volume:20070116
Issue:9
Page Number:1259 - 1272
DOI: 10.1016/j.wasman.2006.07.028
ISSN/ISBN:0956-053X (Print) 0956-053X (Linking)
Abstract:"The purpose of this study is to determine the impact of leachate recirculation on the degradation of municipal solid wastes (bioreactor concept). The study was carried out using columns containing approximately 50 kg of waste, in order to follow waste degradation over a limited time. Three types of waste were studied: fresh waste of standard composition, fresh waste of fermentable composition and some 8-yr-old waste extracted from a site in France. Measurement of the global parameters, such as chemical oxygen demand (COD), volatile acidity, alkalinity, leachate conductivity, methane potential of the wastes and biogas production monitoring (volume of CO2 and CH4 produced), were carried out. The quantity of oxydizable matter and biogas production was increased by the leachate recirculation, and the duration of the first degradation phases was reduced in all cases. Chloride, ammonium and organic pollution accumulation was observed according to the duration of recirculation. After 400 days of degradation, waste stabilization seemed to be reached for all of the recirculated columns (COD<300 mg/L O2, and methane potential reached)"
Keywords:"*Bioreactors Carbon Dioxide/metabolism Chlorides/analysis Hydrogen-Ion Concentration Methane/metabolism Quaternary Ammonium Compounds/analysis Refuse Disposal/*methods Water Movements Water Pollutants, Chemical/analysis;"
Notes:"MedlineFrancois, V Feuillade, G Matejka, G Lagier, T Skhiri, N eng 2007/01/17 Waste Manag. 2007; 27(9):1259-72. doi: 10.1016/j.wasman.2006.07.028. Epub 2007 Jan 16"

 
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