Coupling ARB-based biological and photochemical (UV/TiO2 and UV/S2O82-) techniques to deal with sanitary landfill leachate
Copyright © 2016 Elsevier Ltd. All rights reserved.
| Veröffentlicht in: | Waste management (New York, N.Y.). - 1999. - 63(2017) vom: 21. Mai, Seite 292-298 |
|---|---|
| 1. Verfasser: | |
| Weitere Verfasser: | , , , , |
| Format: | Online-Aufsatz |
| Sprache: | English |
| Veröffentlicht: |
2017
|
| Zugriff auf das übergeordnete Werk: | Waste management (New York, N.Y.) |
| Schlagworte: | Journal Article Aged refuse-based bioreactor (ARB) Persulfate oxidation Radicals Sanitary landfill leachate TiO(2) photocatalysis Water Pollutants, Chemical titanium dioxide 15FIX9V2JP Titanium |
| Zusammenfassung: | Copyright © 2016 Elsevier Ltd. All rights reserved. The aim of this study was to provide an alternative way to remove bio-refractory organics and ammonical-nitrogen from mature municipal solid waste (MSW) landfill leachate by combining biological and photochemical processes. To achieve this objective, the effectiveness of anoxic aged refuse-based bioreactor (ARB) for biological leachate pretreatment followed by Advanced Oxidation Processes (AOPs) by heterogeneous photocatalysis (TiO2/UV) and persulfate (S2O82-) oxidation were tested. The results obtained after ARB based pre-treatment demonstrated a mean 72%, 81% and 92% degradation of COD, NH4N and TN, respectively. However, this treated leachate cannot be discharged without another treatment; hence, it was further treated by UV-mediated TiO2 photocatalysis and S2O82- oxidation. An average 82% of COD was abated at optimum condition (1gL-1 TiO2; pH 5) whereas, using an optimum 1.5gL-1 persulfate at pH 5, 81% COD reduction occurred. Acidic and alkaline pH favored COD and NH4N removal respectively. The results of this study demonstrated that coupling ARB with AOPs is potentially applicable process to deal with bio-recalcitrant compounds present in mature landfill leachate |
|---|---|
| Beschreibung: | Date Completed 05.10.2017 Date Revised 05.10.2017 published: Print-Electronic Citation Status MEDLINE |
| ISSN: | 1879-2456 |
| DOI: | 10.1016/j.wasman.2016.09.003 |