Photocatalytic Ozonation Performance In Landfill Leachate Treatment

Photocatalytic Ozonation Performance In Landfill Leachate Treatment

Abstract This work aims to identify the best treatment condition for removal of chemical oxigen demand (COD) and increase of biodegradability in an advanced oxidative process of photocatalytic ozonation with titanium dioxide (TiO2), applied to the remediation of the leachate produced at the municipal landfill of Campo Mourão, Paraná. The experiment was carried out using a photocatalytic chamber and an ozonation system based on the corona effect. A statistical model of the central composite rotatable design (CCRD) was elaborated and three variables (pH, TiO2 dose and airflow) were analyzed, to define the optimum condition that allows the highest perfomance of the treatment. The statistical model was valid for the data. The best condition identified was: pH = 3.3 TiO2 dose = 0.012 g and flow = 9.0 L.min-1 (8.79 g, O3.min-1). The removal of filtrate COD was approximately 30% and increase in biodegradability (BOD/COD) = 0.59 in the optimum condition. Factors such as the complex composition of the leachate and treatment time were considered as possible limitants for better results. The treatment did not allow to reach the permissible limits for disposal of the effluent at the environment, in Brazil.

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Main Authors: CARARD,RAFAEL F., SCHIAVON,GILSON JUNIOR, CASTRO,THIAGO M. DE, MEDEIROS,FLÁVIA V.S., PAULA,GUILHERME DE, LANDGRAF,ANA CAROLINA M., ARANTES,EUDES J.
Format: Digital revista
Language:English
Published: Academia Brasileira de Ciências 2021
Online Access:http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652021000101806
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spelling oai:scielo:S0001-376520210001018062021-04-07Photocatalytic Ozonation Performance In Landfill Leachate TreatmentCARARD,RAFAEL F.SCHIAVON,GILSON JUNIORCASTRO,THIAGO M. DEMEDEIROS,FLÁVIA V.S.PAULA,GUILHERME DELANDGRAF,ANA CAROLINA M.ARANTES,EUDES J. Advanced oxidative processes heterogeneous photocatalysis Landfill Sanitary leachate ozonation photocatalytic ozonation Abstract This work aims to identify the best treatment condition for removal of chemical oxigen demand (COD) and increase of biodegradability in an advanced oxidative process of photocatalytic ozonation with titanium dioxide (TiO2), applied to the remediation of the leachate produced at the municipal landfill of Campo Mourão, Paraná. The experiment was carried out using a photocatalytic chamber and an ozonation system based on the corona effect. A statistical model of the central composite rotatable design (CCRD) was elaborated and three variables (pH, TiO2 dose and airflow) were analyzed, to define the optimum condition that allows the highest perfomance of the treatment. The statistical model was valid for the data. The best condition identified was: pH = 3.3 TiO2 dose = 0.012 g and flow = 9.0 L.min-1 (8.79 g, O3.min-1). The removal of filtrate COD was approximately 30% and increase in biodegradability (BOD/COD) = 0.59 in the optimum condition. Factors such as the complex composition of the leachate and treatment time were considered as possible limitants for better results. The treatment did not allow to reach the permissible limits for disposal of the effluent at the environment, in Brazil.info:eu-repo/semantics/openAccessAcademia Brasileira de CiênciasAnais da Academia Brasileira de Ciências v.93 n.1 20212021-01-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652021000101806en10.1590/0001-3765202120190137
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libraryname SciELO
language English
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author CARARD,RAFAEL F.
SCHIAVON,GILSON JUNIOR
CASTRO,THIAGO M. DE
MEDEIROS,FLÁVIA V.S.
PAULA,GUILHERME DE
LANDGRAF,ANA CAROLINA M.
ARANTES,EUDES J.
spellingShingle CARARD,RAFAEL F.
SCHIAVON,GILSON JUNIOR
CASTRO,THIAGO M. DE
MEDEIROS,FLÁVIA V.S.
PAULA,GUILHERME DE
LANDGRAF,ANA CAROLINA M.
ARANTES,EUDES J.
Photocatalytic Ozonation Performance In Landfill Leachate Treatment
author_facet CARARD,RAFAEL F.
SCHIAVON,GILSON JUNIOR
CASTRO,THIAGO M. DE
MEDEIROS,FLÁVIA V.S.
PAULA,GUILHERME DE
LANDGRAF,ANA CAROLINA M.
ARANTES,EUDES J.
author_sort CARARD,RAFAEL F.
title Photocatalytic Ozonation Performance In Landfill Leachate Treatment
title_short Photocatalytic Ozonation Performance In Landfill Leachate Treatment
title_full Photocatalytic Ozonation Performance In Landfill Leachate Treatment
title_fullStr Photocatalytic Ozonation Performance In Landfill Leachate Treatment
title_full_unstemmed Photocatalytic Ozonation Performance In Landfill Leachate Treatment
title_sort photocatalytic ozonation performance in landfill leachate treatment
description Abstract This work aims to identify the best treatment condition for removal of chemical oxigen demand (COD) and increase of biodegradability in an advanced oxidative process of photocatalytic ozonation with titanium dioxide (TiO2), applied to the remediation of the leachate produced at the municipal landfill of Campo Mourão, Paraná. The experiment was carried out using a photocatalytic chamber and an ozonation system based on the corona effect. A statistical model of the central composite rotatable design (CCRD) was elaborated and three variables (pH, TiO2 dose and airflow) were analyzed, to define the optimum condition that allows the highest perfomance of the treatment. The statistical model was valid for the data. The best condition identified was: pH = 3.3 TiO2 dose = 0.012 g and flow = 9.0 L.min-1 (8.79 g, O3.min-1). The removal of filtrate COD was approximately 30% and increase in biodegradability (BOD/COD) = 0.59 in the optimum condition. Factors such as the complex composition of the leachate and treatment time were considered as possible limitants for better results. The treatment did not allow to reach the permissible limits for disposal of the effluent at the environment, in Brazil.
publisher Academia Brasileira de Ciências
publishDate 2021
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652021000101806
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