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Preparation and Coagulation Performance of Polyaluminum Lanthanum Silicate Coagulant

In order to address the growing problem of water pollution caused by the excessive discharge of contaminants and provide a better aquatic ecosystem for the public, increasing attention has been paid to the harmlessness and efficiency of coagulation. In this study, polyaluminum lanthanum silicate (PA...

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Autores principales: He, Jie, Song, Qixuan, He, Jian
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9957236/
https://www.ncbi.nlm.nih.gov/pubmed/36833491
http://dx.doi.org/10.3390/ijerph20042793
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author He, Jie
Song, Qixuan
He, Jian
author_facet He, Jie
Song, Qixuan
He, Jian
author_sort He, Jie
collection PubMed
description In order to address the growing problem of water pollution caused by the excessive discharge of contaminants and provide a better aquatic ecosystem for the public, increasing attention has been paid to the harmlessness and efficiency of coagulation. In this study, polyaluminum lanthanum silicate (PALS) was synthesized through co-polymerization as a novel coagulant to treat wastewater. FTIR, XRD, and SEM were used to analyze the morphology and structure of the material, which further confirmed that the PALS was successfully synthesized. The results indicated that PALS had a great performance in the treatment of a kaolin–humic acid suspension under the optimal synthesis conditions with Al/Si = 3, La/Si = 0.1, and basicity = 0.7. Compared with conventional coagulants, PALS exhibited a better performance at a low coagulant dose and could achieve a good removal effect for an ultraviolet wavelength less than 254 nm (UV(254)) (83.87%), residual turbidity (0.49 NTU), and dissolved organic carbon (DOC) (69.57%) at the optimal conditions. Additionally, the PALS showed a better effect on phosphate removal than other coagulants did, where the removal efficiency could reach 99.60%. Charge neutralization and adsorption bridging were the potential wastewater treatment mechanisms employed by the PALS, which showed varied contributions under different pH levels. The results indicated that PALS can be a promising coagulant in water treatment.
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spelling pubmed-99572362023-02-25 Preparation and Coagulation Performance of Polyaluminum Lanthanum Silicate Coagulant He, Jie Song, Qixuan He, Jian Int J Environ Res Public Health Article In order to address the growing problem of water pollution caused by the excessive discharge of contaminants and provide a better aquatic ecosystem for the public, increasing attention has been paid to the harmlessness and efficiency of coagulation. In this study, polyaluminum lanthanum silicate (PALS) was synthesized through co-polymerization as a novel coagulant to treat wastewater. FTIR, XRD, and SEM were used to analyze the morphology and structure of the material, which further confirmed that the PALS was successfully synthesized. The results indicated that PALS had a great performance in the treatment of a kaolin–humic acid suspension under the optimal synthesis conditions with Al/Si = 3, La/Si = 0.1, and basicity = 0.7. Compared with conventional coagulants, PALS exhibited a better performance at a low coagulant dose and could achieve a good removal effect for an ultraviolet wavelength less than 254 nm (UV(254)) (83.87%), residual turbidity (0.49 NTU), and dissolved organic carbon (DOC) (69.57%) at the optimal conditions. Additionally, the PALS showed a better effect on phosphate removal than other coagulants did, where the removal efficiency could reach 99.60%. Charge neutralization and adsorption bridging were the potential wastewater treatment mechanisms employed by the PALS, which showed varied contributions under different pH levels. The results indicated that PALS can be a promising coagulant in water treatment. MDPI 2023-02-04 /pmc/articles/PMC9957236/ /pubmed/36833491 http://dx.doi.org/10.3390/ijerph20042793 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
He, Jie
Song, Qixuan
He, Jian
Preparation and Coagulation Performance of Polyaluminum Lanthanum Silicate Coagulant
title Preparation and Coagulation Performance of Polyaluminum Lanthanum Silicate Coagulant
title_full Preparation and Coagulation Performance of Polyaluminum Lanthanum Silicate Coagulant
title_fullStr Preparation and Coagulation Performance of Polyaluminum Lanthanum Silicate Coagulant
title_full_unstemmed Preparation and Coagulation Performance of Polyaluminum Lanthanum Silicate Coagulant
title_short Preparation and Coagulation Performance of Polyaluminum Lanthanum Silicate Coagulant
title_sort preparation and coagulation performance of polyaluminum lanthanum silicate coagulant
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9957236/
https://www.ncbi.nlm.nih.gov/pubmed/36833491
http://dx.doi.org/10.3390/ijerph20042793
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