Abstract
A short-term aerobic stabilization of digested waste in the final methane phase was studied. The effect of aeration rate on the reduction of leachate parameters and on the rate of CO2 production and O2 assimilation was investigated. Experimental simulation of aerobic landfill stabilization was carried out using lysimeters. When testing the effect of aeration rate on the reduction of leachate indices (BOD5, COD, N-NH4+), it was reported that the most significant reduction was obtained at the highest rate of aeration and the smallest reduction of leachate indices was attained not at the lowest but at medium aeration rates. Both the rate of CO2 production and the O2 assimilation reached their highest values in the lysimeters aerated at a high rate of aeration. The proposed mathematical model which consists of a system of five differential equations describing CO2 production, O2 assimilation and the changes of organic carbon content in the leachate correspond well with the experimental data.
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© 2012 Institute of Chemistry, Slovak Academy of Sciences
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Articles in the same Issue
- Mathematical model of aerobic stabilization of old landfills
- Investigation of kinetics of anaerobic digestion of Canary grass
- Extractive distillation modeling of the ternary system 2-methoxy-2-methylpropane-methanol-butan-1-ol
- Agitation of a gas-solid-liquid system in a vessel with high-speed impeller and vertical tubular coil
- Experimental analysis of the hydrodynamics of a three-phase system in a vessel with two impellers
- Influence of the ionic form of a cation-exchange adsorbent on chromatographic separation of galactooligosaccharides
- Mixed oxides of transition metals as catalysts for total ethanol oxidation
- Speciation of heavy metals in sewage sludge after mesophilic and thermophilic anaerobic digestion
- Oxidation of ammonia using modified TiO2 catalyst and UV-VIS irradiation
- Antioxidant potential and authenticity of some commercial fruit juices studied by EPR and IRMS
- Etching and recovery of gold from aluminum substrate in thiourea solution