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231225s2018 xx |||||o 00| ||eng c |
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|a 10.1016/j.wasman.2018.04.031
|2 doi
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|a pubmed24n0945.xml
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|a (DE-627)NLM283525444
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|a (NLM)29705045
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|a (PII)S0956-053X(18)30254-X
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
1 |
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|a Scandelai, Ana Paula Jambers
|e verfasserin
|4 aut
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| 245 |
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|a Combined processes of ozonation and supercritical water oxidation for landfill leachate degradation
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|c 2018
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 13.08.2018
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|a Date Revised 02.12.2018
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Copyright © 2018 Elsevier Ltd. All rights reserved.
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|a Leachate is a highly variable, heterogeneous and recalcitrant wastewater generated in landfills which may contain high concentrations of many organic and inorganic compounds, hampering the application of a single technique in its treatment. Therefore, this paper assessed leachate degradation through supercritical water oxidation (ScWO) as well as combined processes of ozonation and supercritical water oxidation (O3/ScWO and ScWO/O3), a yet innovative combination. Ozonation was carried out at different reaction times (30-120 min). ScWO was developed at 600 °C, 23 MPa, and spatial time (τ) from 29 to 52 s. A combination of ozonation (30 min) and supercritical water oxidation process (O3-30'/ScWO) was the most efficient technique for the degradation of the leachate assessed. These conditions enabled to remove high values of apparent and true color (92% and 97%, respectively), biochemical oxygen demand (BOD5,20) (95%), chemical oxygen demand (COD) (92%), total organic carbon (TOC) (79%), nitrite (78%), nitrate (84%), total (96%), dissolved (96%) and suspended (94%) solids. In addition, the combined process presented significant decrease in electric conductivity (EC) (68%) and less leachate turbidity removal (43%). Except for ammonia and nitrite, all parameters of the leachate treated by O3-30'/ScWO met the specifications of Brazilian legislation (CONAMA Resolutions No. 357/2005 and No. 430/2011) for the disposal of wastewater in water bodies. Besides, both processes are considered to be clean technologies. This shows the great possibility of applying the O3/ScWO combination to landfills leachates
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|a Journal Article
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|a AOP
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|a Organic compounds
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|a Organic matter
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|a Ozone
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|a ScWO
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|a Supercritical oxidation
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|a Water Pollutants, Chemical
|2 NLM
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| 650 |
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|a Water
|2 NLM
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| 650 |
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|a 059QF0KO0R
|2 NLM
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| 650 |
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|a Ozone
|2 NLM
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| 650 |
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|a 66H7ZZK23N
|2 NLM
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| 700 |
1 |
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|a Cardozo Filho, Lúcio
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Martins, Danielly Cruz Campos
|e verfasserin
|4 aut
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| 700 |
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|a Freitas, Thabata Karoliny Formicoli de Souza
|e verfasserin
|4 aut
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| 700 |
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|a Garcia, Juliana Carla
|e verfasserin
|4 aut
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|a Tavares, Célia Regina Granhen
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Waste management (New York, N.Y.)
|d 1999
|g 77(2018) vom: 01. Juli, Seite 466-476
|w (DE-627)NLM098197061
|x 1879-2456
|7 nnns
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| 773 |
1 |
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|g volume:77
|g year:2018
|g day:01
|g month:07
|g pages:466-476
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| 856 |
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|u http://dx.doi.org/10.1016/j.wasman.2018.04.031
|3 Volltext
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|d 77
|j 2018
|b 01
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|h 466-476
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