Wastewater Treatment with Geotextile Filters: The Role in Permeability and Pollutant Control

The application of geotextiles as filter materials in various systems, such as biofilters, wetlands, and wastewater treatment plants, has grown significantly in recent years. The ability of these materials to support biofilm growth makes them ideal for the removal of organic and inorganic contaminan...

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Main Authors: Maria Vitoria Morais, Leonardo Marchiori, Josivaldo Sátiro, Antonio Albuquerque, Victor Cavaleiro
Format: Article
Language:English
Published: MDPI AG 2025-01-01
Series:Applied Sciences
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Online Access:https://www.mdpi.com/2076-3417/15/2/626
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author Maria Vitoria Morais
Leonardo Marchiori
Josivaldo Sátiro
Antonio Albuquerque
Victor Cavaleiro
author_facet Maria Vitoria Morais
Leonardo Marchiori
Josivaldo Sátiro
Antonio Albuquerque
Victor Cavaleiro
author_sort Maria Vitoria Morais
collection DOAJ
description The application of geotextiles as filter materials in various systems, such as biofilters, wetlands, and wastewater treatment plants, has grown significantly in recent years. The ability of these materials to support biofilm growth makes them ideal for the removal of organic and inorganic contaminants present in wastewater. The objective of this research was to analyze clogging through variations in permeability, using column tests for 80 days with two types of nonwoven geotextiles with different grammages (GT120 and GT300), as well as to study the efficiency in the removal of organic matter. A synthetic wastewater was used, allowing the specific observation of biological clogging and the treatment carried out exclusively by microorganisms. The results indicated that bioclogging was not a significant factor within the experimental period. Through the mass test, a continuous increase in biofilm growth over time was observed for both geotextiles. For scanning electron microscopic (SEM) images, GT300 presented a larger biofilm area. A higher removal of COD (80%), N (52%), and P (36%) by microorganisms present in GT300 was found, which appears to be associated with its greater thickness and weight. The higher mesh density provides a larger area for the growth of microorganisms, allowing a greater amount of biomass to establish itself and contributing to the efficient removal of pollutants. These findings highlight the potential of using geotextile filters in wastewater treatment applications, where biofilm growth can positively contribute to contaminant removal without immediately compromising permeability.
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issn 2076-3417
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spelling doaj-art-ccaac2f3b79643818ca9a0317296e8852025-01-24T13:20:10ZengMDPI AGApplied Sciences2076-34172025-01-0115262610.3390/app15020626Wastewater Treatment with Geotextile Filters: The Role in Permeability and Pollutant ControlMaria Vitoria Morais0Leonardo Marchiori1Josivaldo Sátiro2Antonio Albuquerque3Victor Cavaleiro4GeoBioTec, Department of Civil Engineering and Architecture, University of Beira Interior, 6201-001 Covilhã, PortugalGeoBioTec, Department of Civil Engineering and Architecture, University of Beira Interior, 6201-001 Covilhã, PortugalGeoBioTec, Department of Civil Engineering and Architecture, University of Beira Interior, 6201-001 Covilhã, PortugalGeoBioTec, Department of Civil Engineering and Architecture, University of Beira Interior, 6201-001 Covilhã, PortugalGeoBioTec, Department of Civil Engineering and Architecture, University of Beira Interior, 6201-001 Covilhã, PortugalThe application of geotextiles as filter materials in various systems, such as biofilters, wetlands, and wastewater treatment plants, has grown significantly in recent years. The ability of these materials to support biofilm growth makes them ideal for the removal of organic and inorganic contaminants present in wastewater. The objective of this research was to analyze clogging through variations in permeability, using column tests for 80 days with two types of nonwoven geotextiles with different grammages (GT120 and GT300), as well as to study the efficiency in the removal of organic matter. A synthetic wastewater was used, allowing the specific observation of biological clogging and the treatment carried out exclusively by microorganisms. The results indicated that bioclogging was not a significant factor within the experimental period. Through the mass test, a continuous increase in biofilm growth over time was observed for both geotextiles. For scanning electron microscopic (SEM) images, GT300 presented a larger biofilm area. A higher removal of COD (80%), N (52%), and P (36%) by microorganisms present in GT300 was found, which appears to be associated with its greater thickness and weight. The higher mesh density provides a larger area for the growth of microorganisms, allowing a greater amount of biomass to establish itself and contributing to the efficient removal of pollutants. These findings highlight the potential of using geotextile filters in wastewater treatment applications, where biofilm growth can positively contribute to contaminant removal without immediately compromising permeability.https://www.mdpi.com/2076-3417/15/2/626geotextilebiocloggingsynthetic wastewaterbiofilmcolumn tests
spellingShingle Maria Vitoria Morais
Leonardo Marchiori
Josivaldo Sátiro
Antonio Albuquerque
Victor Cavaleiro
Wastewater Treatment with Geotextile Filters: The Role in Permeability and Pollutant Control
Applied Sciences
geotextile
bioclogging
synthetic wastewater
biofilm
column tests
title Wastewater Treatment with Geotextile Filters: The Role in Permeability and Pollutant Control
title_full Wastewater Treatment with Geotextile Filters: The Role in Permeability and Pollutant Control
title_fullStr Wastewater Treatment with Geotextile Filters: The Role in Permeability and Pollutant Control
title_full_unstemmed Wastewater Treatment with Geotextile Filters: The Role in Permeability and Pollutant Control
title_short Wastewater Treatment with Geotextile Filters: The Role in Permeability and Pollutant Control
title_sort wastewater treatment with geotextile filters the role in permeability and pollutant control
topic geotextile
bioclogging
synthetic wastewater
biofilm
column tests
url https://www.mdpi.com/2076-3417/15/2/626
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AT leonardomarchiori wastewatertreatmentwithgeotextilefilterstheroleinpermeabilityandpollutantcontrol
AT josivaldosatiro wastewatertreatmentwithgeotextilefilterstheroleinpermeabilityandpollutantcontrol
AT antonioalbuquerque wastewatertreatmentwithgeotextilefilterstheroleinpermeabilityandpollutantcontrol
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