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http://hdl.handle.net/20.500.12207/5606
Title: | Oxone-promoted wet air oxidation of landfill leachates |
Authors: | Javier Rivas, F. Beltrán, F. Carvalho, F. Alvarez, P. |
Keywords: | Landfill leachates Badajoz Oxone-promoted Air oxidation Chemical oxygen |
Issue Date: | 16-Feb-2005 |
Publisher: | American Chemical Society |
Citation: | Javier Rivas, F., Beltrán, F., Carvalho, F. & Alvarez, P. (2005). Oxone-promoted wet air oxidation of landfill leachates. Industrial & Engineering Chemistry Research, 44(4), 749-758. https://doi.org/10.1021/ie0401511 |
Abstract: | Landfill leachates of the city of Badajoz (in the southwest of Spain) have been treated by wet air oxidation at high temperature (180-270 °C) and pressure (40-70 atm). Typical operating variables such as temperature and oxygen partial pressure have been investigated with no effect of any being found and moderate to low chemical oxygen demand conversions (20-30% depending on initial COD concentration). Initial pH shows a positive influence when acidic conditions are used. Addition of hydrogen peroxide (0.01 M) as a hydroxyl radical promoter is able to provide an additional 15% increase in the final COD removal achieved. If a sulfate radical promoter is used (i.e., Oxone) the process is significantly improved, with COD conversions in the range 60-80%, also depending on the initial COD of the leachates. A first attempt to comprehend the chemistry of this oxidizing system suggests an instantaneous decomposition of Oxone that initiates the radical chain also involving hydroxyl and organic radicals. |
Peer reviewed: | yes |
URI: | https://hdl.handle.net/20.500.12207/5606 |
metadata.dc.identifier.doi: | https://doi.org/10.1021/ie0401511 |
ISSN: | 1520-5045 |
Publisher version: | https://pubs.acs.org/doi/10.1021/ie0401511 |
Appears in Collections: | D-TCA - Artigos em revistas indexadas à WoS/Scopus |
Files in This Item:
File | Description | Size | Format | |
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Oxone-Promoted Wet Air Oxidation of Landfill Leachates_PDFA.pdf | 794.65 kB | Adobe PDF | View/Open |
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