Innovative Juncus effusus plant biofilter for enhanced ammonia removal: design, construction, and preliminary testing

A developing trend in stormwater treatment and management is the use of green technologies. Plant biofilters have been gaining increasing use in support of green technology objectives. This technical note reports on the development and preliminary testing of a laboratory-scale plant biofilter protot...

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Published in:Water S. A. 2024-10, Vol.50 (4), p.421
Main Authors: Munhemba, Tinashe, Brink, Isobel C, Cloete, Thomas E, Bosman, Adele
Format: Article
Language:English
Subjects:
Ammonia
Analysis
Bacteria
Fixation
Green technology
Infiltration (Hydrology)
Nitrification
Nitrogen
Soil microbiology
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creator Munhemba, Tinashe
Brink, Isobel C
Cloete, Thomas E
Bosman, Adele
description A developing trend in stormwater treatment and management is the use of green technologies. Plant biofilters have been gaining increasing use in support of green technology objectives. This technical note reports on the development and preliminary testing of a laboratory-scale plant biofilter prototype for ammonia removal using a South African native plant species (Juncus effusus). The prototype design was based on a conceptual model for nitrogen fixation, plant uptake, bacterial nitrification and soil sorption. Additionally, a plug compartment was incorporated into the design to simulate plug flow as part of the conceptual model. Biofilter models with and without inoculated bacteria were compared. Ammonia reduction, nitrite and nitrate formation were observed. Results showed that the inoculated plant biofilter performed best, with an average of 61% reduction in ammonia within the filter compared to 15% in the normal plant biofilter. The incorporation of a plug compartment aided in slowing down the ammonia infiltration rate, increasing the retention time, and allowing for nitrification to occur. KEYWORDS Juncus effusus plug compartment rhizosphere prototype ammonia
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Plant biofilters have been gaining increasing use in support of green technology objectives. This technical note reports on the development and preliminary testing of a laboratory-scale plant biofilter prototype for ammonia removal using a South African native plant species (Juncus effusus). The prototype design was based on a conceptual model for nitrogen fixation, plant uptake, bacterial nitrification and soil sorption. Additionally, a plug compartment was incorporated into the design to simulate plug flow as part of the conceptual model. Biofilter models with and without inoculated bacteria were compared. Ammonia reduction, nitrite and nitrate formation were observed. Results showed that the inoculated plant biofilter performed best, with an average of 61% reduction in ammonia within the filter compared to 15% in the normal plant biofilter. 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subjects Ammonia
Analysis
Bacteria
Fixation
Green technology
Infiltration (Hydrology)
Nitrification
Nitrogen
Soil microbiology
title Innovative Juncus effusus plant biofilter for enhanced ammonia removal: design, construction, and preliminary testing
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