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Layered zinc hydroxide as an adsorbent for phosphate removal and recovery from wastewater
At present, phosphate removal and recovery from wastewater is gaining wide attention due to the dual issues of eutrophication, caused by the increased production of algae, and universal phosphorus scarcity. In this study, a layered zinc hydroxide (LZH) was synthesized by a simple precipitation metho...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Royal Society of Chemistry
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9040826/ https://www.ncbi.nlm.nih.gov/pubmed/35480281 http://dx.doi.org/10.1039/d1ra04279c |
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author | Almasri, Dema A. Essehli, Rachid Tong, Yongfeng Lawler, Jenny |
author_facet | Almasri, Dema A. Essehli, Rachid Tong, Yongfeng Lawler, Jenny |
author_sort | Almasri, Dema A. |
collection | PubMed |
description | At present, phosphate removal and recovery from wastewater is gaining wide attention due to the dual issues of eutrophication, caused by the increased production of algae, and universal phosphorus scarcity. In this study, a layered zinc hydroxide (LZH) was synthesized by a simple precipitation method and characterized via various techniques. Experiments investigating the effect of contact time, pH, LZH dose, initial phosphate concentration, and co-existing ions on phosphate adsorption were conducted. LZH exhibited a high phosphate adsorption capacity (135.4 mg g(−1)) at a neutral pH. More than 50% of phosphate was removed within the first 60 s of contact time at an initial phosphate concentration of 5 mg L(−1). Phosphate removal using the as-prepared LZH adsorbent was also tested in real treated sewage effluent reducing the residual phosphate amount to levels inhibiting to the growth of algae. Furthermore, phosphate desorption from LZH was investigated using acetic acid and sodium hydroxide regenerants which showed to be very effective for phosphate recovery. |
format | Online Article Text |
id | pubmed-9040826 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | The Royal Society of Chemistry |
record_format | MEDLINE/PubMed |
spelling | pubmed-90408262022-04-26 Layered zinc hydroxide as an adsorbent for phosphate removal and recovery from wastewater Almasri, Dema A. Essehli, Rachid Tong, Yongfeng Lawler, Jenny RSC Adv Chemistry At present, phosphate removal and recovery from wastewater is gaining wide attention due to the dual issues of eutrophication, caused by the increased production of algae, and universal phosphorus scarcity. In this study, a layered zinc hydroxide (LZH) was synthesized by a simple precipitation method and characterized via various techniques. Experiments investigating the effect of contact time, pH, LZH dose, initial phosphate concentration, and co-existing ions on phosphate adsorption were conducted. LZH exhibited a high phosphate adsorption capacity (135.4 mg g(−1)) at a neutral pH. More than 50% of phosphate was removed within the first 60 s of contact time at an initial phosphate concentration of 5 mg L(−1). Phosphate removal using the as-prepared LZH adsorbent was also tested in real treated sewage effluent reducing the residual phosphate amount to levels inhibiting to the growth of algae. Furthermore, phosphate desorption from LZH was investigated using acetic acid and sodium hydroxide regenerants which showed to be very effective for phosphate recovery. The Royal Society of Chemistry 2021-09-10 /pmc/articles/PMC9040826/ /pubmed/35480281 http://dx.doi.org/10.1039/d1ra04279c Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/ |
spellingShingle | Chemistry Almasri, Dema A. Essehli, Rachid Tong, Yongfeng Lawler, Jenny Layered zinc hydroxide as an adsorbent for phosphate removal and recovery from wastewater |
title | Layered zinc hydroxide as an adsorbent for phosphate removal and recovery from wastewater |
title_full | Layered zinc hydroxide as an adsorbent for phosphate removal and recovery from wastewater |
title_fullStr | Layered zinc hydroxide as an adsorbent for phosphate removal and recovery from wastewater |
title_full_unstemmed | Layered zinc hydroxide as an adsorbent for phosphate removal and recovery from wastewater |
title_short | Layered zinc hydroxide as an adsorbent for phosphate removal and recovery from wastewater |
title_sort | layered zinc hydroxide as an adsorbent for phosphate removal and recovery from wastewater |
topic | Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9040826/ https://www.ncbi.nlm.nih.gov/pubmed/35480281 http://dx.doi.org/10.1039/d1ra04279c |
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