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EnglishThe release of landfill leachate, with its load of organic material, gives rise to a succession of redox zones in the contaminated aquifer. Indigenous microbial populations can couple the oxidation of the organic compounds to the reduction of a number of electron acceptors. The sequence of TEAPs (terminal electron acceptor processes): aerobic respiration, denitrification, Mn(IV)-reduction, Fe(III)-reduction, sulfate-reduction and methanogenesis is determined by the energy yield of each redox reaction. This study presents a kinetic description of these processes using the multispecies reactive transport code RT3D. A user-defined kinetic was developed in order to take into account the principal biogeochemical processes that are likely to occur downgradient of a landfill. This model was tested on simple batch, 1D and 2D problems before applying to a field data set collected at a mixed municipal and industrial landfill site located close to the city of Turin in Italy.
Modeling of Redox Zonation Downgradient of Landfill Sites / DI MOLFETTA A.; ROLLE M.; SETHI R.; CLEMENT T.P.. - ELETTRONICO. - (2005), pp. 1-12. ((Intervento presentato al convegno World Water & Environmental Congress (EWRI 2005) tenutosi a Anchorage, Alaska nel 15-19 maggio 2005.
| Titolo: | Modeling of Redox Zonation Downgradient of Landfill Sites |
| Autori: | |
| Data di pubblicazione: | 2005 |
| Abstract: | The release of landfill leachate, with its load of organic material, gives rise to a succession o...f redox zones in the contaminated aquifer. Indigenous microbial populations can couple the oxidation of the organic compounds to the reduction of a number of electron acceptors. The sequence of TEAPs (terminal electron acceptor processes): aerobic respiration, denitrification, Mn(IV)-reduction, Fe(III)-reduction, sulfate-reduction and methanogenesis is determined by the energy yield of each redox reaction. This study presents a kinetic description of these processes using the multispecies reactive transport code RT3D. A user-defined kinetic was developed in order to take into account the principal biogeochemical processes that are likely to occur downgradient of a landfill. This model was tested on simple batch, 1D and 2D problems before applying to a field data set collected at a mixed municipal and industrial landfill site located close to the city of Turin in Italy. |
| ISBN: | 9780784407929 |
| Appare nelle tipologie: | 4.1 Contributo in Atti di convegno |
File in questo prodotto:
| File | Descrizione | Tipologia | Licenza | |
|---|---|---|---|---|
| 2005-03-C Rolle_Alaska.pdf | 2. Post-print / Author's Accepted Manuscript | Non Pubblico - Accesso privato/ristretto | Administrator Richiedi una copia |
http://hdl.handle.net/11583/1410889
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