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Reclamation of wastewater in wetlands using reed plants and biochar

To cope with water crisis, wastewater reuse has been introduced as a potential source for irrigation. On the other hand, irrigation with wastewater may negatively affect the surroundings. In this study, reed plant (Phragmits australis) and its biochar were tested as low-cost treatments to enhance th...

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Autores principales: Asaad, Amany A., El-Hawary, Ahmed M., Abbas, Mohamed H. H., Mohamed, Ibrahim, Abdelhafez, Ahmed A., Bassouny, Mohamed A.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9663436/
https://www.ncbi.nlm.nih.gov/pubmed/36376384
http://dx.doi.org/10.1038/s41598-022-24078-9
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author Asaad, Amany A.
El-Hawary, Ahmed M.
Abbas, Mohamed H. H.
Mohamed, Ibrahim
Abdelhafez, Ahmed A.
Bassouny, Mohamed A.
author_facet Asaad, Amany A.
El-Hawary, Ahmed M.
Abbas, Mohamed H. H.
Mohamed, Ibrahim
Abdelhafez, Ahmed A.
Bassouny, Mohamed A.
author_sort Asaad, Amany A.
collection PubMed
description To cope with water crisis, wastewater reuse has been introduced as a potential source for irrigation. On the other hand, irrigation with wastewater may negatively affect the surroundings. In this study, reed plant (Phragmits australis) and its biochar were tested as low-cost treatments to enhance the efficiency of wastewater reclamation in wetlands within only 72 h. The investigated water was of low irrigation quality and exhibited high contents of BOD(5) and fecal coliform. Moreover, this water contained high levels of soluble cations and anions; besides, being marginally contaminated with Cu, Mn and Cd. After 2 days in the sedimentation unit, wastewater was subjected to three reclamation treatments in parallel (each lasted for 24 h): (1) a “sand & gravel bed”, (2) “reed plants grown on a sand & gravel bed” and (3) “biochar + a sand & gravel bed”. The results showed that all treatments decreased BOD(5), fecal coliform, total cations and anions, with superiority for the second and third treatments. The levels of the potentially toxic elements also decreased to values within the permissible levels. Although the aforementioned wastewater treatment processes upgraded the quality of this water, it remained in the poor grade. Biochar or reed plants grown on sand and gravel beds significantly improved wastewater quality to the medium quality grade, with superiority for biochar treatment. In conclusion, investigated treatments are guaranteed in wetlands for wastewater reclamation; yet, further protocols should be followed to achieve safe handling of this water and attain the sustainable goals.
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spelling pubmed-96634362022-11-15 Reclamation of wastewater in wetlands using reed plants and biochar Asaad, Amany A. El-Hawary, Ahmed M. Abbas, Mohamed H. H. Mohamed, Ibrahim Abdelhafez, Ahmed A. Bassouny, Mohamed A. Sci Rep Article To cope with water crisis, wastewater reuse has been introduced as a potential source for irrigation. On the other hand, irrigation with wastewater may negatively affect the surroundings. In this study, reed plant (Phragmits australis) and its biochar were tested as low-cost treatments to enhance the efficiency of wastewater reclamation in wetlands within only 72 h. The investigated water was of low irrigation quality and exhibited high contents of BOD(5) and fecal coliform. Moreover, this water contained high levels of soluble cations and anions; besides, being marginally contaminated with Cu, Mn and Cd. After 2 days in the sedimentation unit, wastewater was subjected to three reclamation treatments in parallel (each lasted for 24 h): (1) a “sand & gravel bed”, (2) “reed plants grown on a sand & gravel bed” and (3) “biochar + a sand & gravel bed”. The results showed that all treatments decreased BOD(5), fecal coliform, total cations and anions, with superiority for the second and third treatments. The levels of the potentially toxic elements also decreased to values within the permissible levels. Although the aforementioned wastewater treatment processes upgraded the quality of this water, it remained in the poor grade. Biochar or reed plants grown on sand and gravel beds significantly improved wastewater quality to the medium quality grade, with superiority for biochar treatment. In conclusion, investigated treatments are guaranteed in wetlands for wastewater reclamation; yet, further protocols should be followed to achieve safe handling of this water and attain the sustainable goals. Nature Publishing Group UK 2022-11-14 /pmc/articles/PMC9663436/ /pubmed/36376384 http://dx.doi.org/10.1038/s41598-022-24078-9 Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Asaad, Amany A.
El-Hawary, Ahmed M.
Abbas, Mohamed H. H.
Mohamed, Ibrahim
Abdelhafez, Ahmed A.
Bassouny, Mohamed A.
Reclamation of wastewater in wetlands using reed plants and biochar
title Reclamation of wastewater in wetlands using reed plants and biochar
title_full Reclamation of wastewater in wetlands using reed plants and biochar
title_fullStr Reclamation of wastewater in wetlands using reed plants and biochar
title_full_unstemmed Reclamation of wastewater in wetlands using reed plants and biochar
title_short Reclamation of wastewater in wetlands using reed plants and biochar
title_sort reclamation of wastewater in wetlands using reed plants and biochar
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9663436/
https://www.ncbi.nlm.nih.gov/pubmed/36376384
http://dx.doi.org/10.1038/s41598-022-24078-9
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