title: Degradation of municipal solid waste in simulated landfill bioreactors under aerobic conditions.
abstract: In this study the municipal solid waste degradation processes in simulated landfill bioreactors under aerobic and anaerobic conditions is investigated. The effect of waste aeration on the dynamics of the aerobic degradation processes in lysimeters as well as during anaerobic processes after completion of aeration is presented. The results are compared with the anaerobic degradation process to determine the stabilization stage of waste in both experimental modes. The experiments in aerobic lysimeters were carried out at small aeration rate (4.41⋅10(-3)lmin(-1)kg(-1)) and for two recirculation rates (24.9 and 1.58lm(-3)d(-1)). The change of leachate and formed gases composition showed that the application of even a small aeration rate favored the degradation of organic matter. The amount of CO2 and CH4 released from anaerobic lysimeter was about 5 times lower than that from the aerobic lysimeters. Better stabilization of the waste was obtained in the aerobic lysimeter with small recirculation, from which the amount of CO2 produced was larger by about 19% in comparison with that from the aerobic lysimeter with large leachate recirculation.
authors.affiliation: Department of Bioprocess Engineering, Technical University of Lodz, Wolczanska 213, 90-924 Lodz, Poland. Electronic address: radoslaw.slezak@p.lodz.pl.
authors.forename: Radoslaw
authors.initials: R
authors.lastname: Slezak
authors.affiliation: Department of Bioprocess Engineering, Technical University of Lodz, Wolczanska 213, 90-924 Lodz, Poland. Electronic address: krzystek@p.lodz.pl.
authors.forename: Liliana
authors.initials: L
authors.lastname: Krzystek
authors.affiliation: Department of Bioprocess Engineering, Technical University of Lodz, Wolczanska 213, 90-924 Lodz, Poland. Electronic address: stanleda@p.lodz.pl.
authors.forename: Stanislaw
authors.initials: S
authors.lastname: Ledakowicz
mesh_terms: D000332:Aerobiosis; D000693:Anaerobiosis; D001673:Biodegradation, Environmental; D019149:Bioreactors; D002244:Carbon / Q000378:metabolism; D012037:Refuse Disposal / Q000295:instrumentation / Q000379:methods*; D062611:Solid Waste; D064091:Waste Disposal Facilities; D014874:Water Pollutants, Chemical / Q000032:analysis / Q000737:chemistry
chemical_list: D062611:Solid Waste; D014874:Water Pollutants, Chemical; D002244:Carbon
keywords: Aeration; Landfill; Lysimeter; Stabilization; Waste