Effect of intermittent induced aeration on nitrogen removal and denitrifying-bacterial community structure in Cork and gravel vertical flow pilot-scale treatment wetlands

Abstract: In this work, we have evaluated the impact of intermittent induced aeration in total nitrogen (TN), ammonia (NH4-N) and nitrate-nitrogen (NO3-N) removal in four pilot-scale vertical flow constructed wetlands (VFCW) (two aerated two non-aerated) using cork by-product or gravel as the filt...

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Autores principales: Aguilara, Lorena, Gallegos, Ángel, Pérez, Leonardo Martín, Arias, Carlos A., Rubio, Raquel, Haulani, Leila, Garciá Raurich, Josep, Pallarés, Marc, de Pablo, Joan, Morató, Jordi
Formato: Artículo
Lenguaje:Inglés
Publicado: Taylor & Francis 2022
Materias:
HUMEDALES
CONTAMINACION DEL AGUA
NITROGENO
Acceso en línea:https://repositorio.uca.edu.ar/handle/123456789/13355
Aporte de:
Repositorio Institucional de la Universidad Católica Argentina (UCA) de Universidad Católica Argentina
id I33-R139123456789-13355
record_format dspace
institution Universidad Católica Argentina
institution_str I-33
repository_str R-139
collection Repositorio Institucional de la Universidad Católica Argentina (UCA)
language Inglés
topic HUMEDALES
CONTAMINACION DEL AGUA
NITROGENO
spellingShingle HUMEDALES
CONTAMINACION DEL AGUA
NITROGENO
Aguilara, Lorena
Gallegos, Ángel
Pérez, Leonardo Martín
Arias, Carlos A.
Rubio, Raquel
Haulani, Leila
Garciá Raurich, Josep
Pallarés, Marc
de Pablo, Joan
Morató, Jordi
Effect of intermittent induced aeration on nitrogen removal and denitrifying-bacterial community structure in Cork and gravel vertical flow pilot-scale treatment wetlands
topic_facet HUMEDALES
CONTAMINACION DEL AGUA
NITROGENO
description Abstract: In this work, we have evaluated the impact of intermittent induced aeration in total nitrogen (TN), ammonia (NH4-N) and nitrate-nitrogen (NO3-N) removal in four pilot-scale vertical flow constructed wetlands (VFCW) (two aerated two non-aerated) using cork by-product or gravel as the filter material and planted with Phragmites australis. Both aerated and non-aerated systems achieved high COD and BOD5 elimination rates ( 90%) at the end of the 5-month test period. However, the aerated systems presented maximal COD and BOD5 removal from the third month of operation onwards since air supply favored the oxidative bioprocesses occurring within the wetlands. Cork and gravel aerated VFCW also proved to be more efficient (p<0.05) in NO3-N removal than the non-aerated systems and this upgraded performance was correlated with a significant higher relative abundance of the nirS gene. The aerated systems also showed a slightly improved NH4-N removal. Noticeably, cork VFCW showed higher TN removal mean values ( 35%) than gravel wetlands (27-28%) regardless aeration. Moreover, cork VFCW showed higher relative abundance of the nosZ gene. Our results demonstrated a better nitrogen elimination for the aerated cork pilotscale VFCW, and this behavior was correlated with a higher abundance of both nirS and nosZ, two of the key functional genes involved in nitrogen metabolism.
format Artículo
author Aguilara, Lorena
Gallegos, Ángel
Pérez, Leonardo Martín
Arias, Carlos A.
Rubio, Raquel
Haulani, Leila
Garciá Raurich, Josep
Pallarés, Marc
de Pablo, Joan
Morató, Jordi
author_facet Aguilara, Lorena
Gallegos, Ángel
Pérez, Leonardo Martín
Arias, Carlos A.
Rubio, Raquel
Haulani, Leila
Garciá Raurich, Josep
Pallarés, Marc
de Pablo, Joan
Morató, Jordi
author_sort Aguilara, Lorena
title Effect of intermittent induced aeration on nitrogen removal and denitrifying-bacterial community structure in Cork and gravel vertical flow pilot-scale treatment wetlands
title_short Effect of intermittent induced aeration on nitrogen removal and denitrifying-bacterial community structure in Cork and gravel vertical flow pilot-scale treatment wetlands
title_full Effect of intermittent induced aeration on nitrogen removal and denitrifying-bacterial community structure in Cork and gravel vertical flow pilot-scale treatment wetlands
title_fullStr Effect of intermittent induced aeration on nitrogen removal and denitrifying-bacterial community structure in Cork and gravel vertical flow pilot-scale treatment wetlands
title_full_unstemmed Effect of intermittent induced aeration on nitrogen removal and denitrifying-bacterial community structure in Cork and gravel vertical flow pilot-scale treatment wetlands
title_sort effect of intermittent induced aeration on nitrogen removal and denitrifying-bacterial community structure in cork and gravel vertical flow pilot-scale treatment wetlands
publisher Taylor & Francis
publishDate 2022
url https://repositorio.uca.edu.ar/handle/123456789/13355
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