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Performance and Mechanism of Functionalized Water Hyacinth Biochar for Adsorption and Removal of Benzotriazole and Lead in Water

In this paper, water hyacinth is used to prepare biochar (WBC). A biochar–aluminum–zinc-layered double hydroxide composite functional material (WL) is synthesized via a simple co-precipitation method which is used to adsorb and remove benzotriazole (BTA) and lead (Pb(2+)) in an aqueous solution. In...

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Autores principales: Bian, Pengyang, Shao, Qinqin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10219203/
https://www.ncbi.nlm.nih.gov/pubmed/37240279
http://dx.doi.org/10.3390/ijms24108936
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author Bian, Pengyang
Shao, Qinqin
author_facet Bian, Pengyang
Shao, Qinqin
author_sort Bian, Pengyang
collection PubMed
description In this paper, water hyacinth is used to prepare biochar (WBC). A biochar–aluminum–zinc-layered double hydroxide composite functional material (WL) is synthesized via a simple co-precipitation method which is used to adsorb and remove benzotriazole (BTA) and lead (Pb(2+)) in an aqueous solution. In particular, this research paper uses various characterization methods to analyze WL and to explore the adsorption performance and adsorption mechanism of WL on BTA and Pb(2+) in an aqueous solution through batch adsorption experiments combined with model fitting and spectroscopy techniques. The results indicate that the surface of WL contains a thick sheet-like structure with many wrinkles which would provide many adsorption sites for pollutants. At room temperature (25 °C), the maximum adsorption capacities of WL on BTA and Pb(2+) are 248.44 mg·g(−1) and 227.13 mg·g(−1), respectively. In a binary system, during the process of using WL to adsorb BTA and Pb(2+), compared with that in the absorption on Pb(2+), WL shows a stronger affinity in the adsorption on BTA, and BTA would thus be preferred in the absorption process. The adsorption process of WL on BTA and Pb(2+) is spontaneous and is endothermic monolayer chemisorption. In addition, the adsorption of WL on BTA and Pb(2+) involves many mechanisms, but the main adsorption mechanisms are different. Among them, hydrogen bonding dominates the adsorption on BTA, while functional groups (C-O and C=O) complexation dominates the adsorption on Pb(2+). When WL adsorbs BTA and Pb(2+), the coexistence of cations (K(+), Na(+), and Ca(2+)) has a strong anti-interference ability, and WL can use a lower concentration of fulvic acid (FA) (<20 mg·L(−1)) to improve its adsorption performance. Last but not least, WL has a stable regenerative performance in a one-component system and a binary system, which indicates that WL has excellent potential for the remediation of BTA and Pb(2+) in water.
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spelling pubmed-102192032023-05-27 Performance and Mechanism of Functionalized Water Hyacinth Biochar for Adsorption and Removal of Benzotriazole and Lead in Water Bian, Pengyang Shao, Qinqin Int J Mol Sci Article In this paper, water hyacinth is used to prepare biochar (WBC). A biochar–aluminum–zinc-layered double hydroxide composite functional material (WL) is synthesized via a simple co-precipitation method which is used to adsorb and remove benzotriazole (BTA) and lead (Pb(2+)) in an aqueous solution. In particular, this research paper uses various characterization methods to analyze WL and to explore the adsorption performance and adsorption mechanism of WL on BTA and Pb(2+) in an aqueous solution through batch adsorption experiments combined with model fitting and spectroscopy techniques. The results indicate that the surface of WL contains a thick sheet-like structure with many wrinkles which would provide many adsorption sites for pollutants. At room temperature (25 °C), the maximum adsorption capacities of WL on BTA and Pb(2+) are 248.44 mg·g(−1) and 227.13 mg·g(−1), respectively. In a binary system, during the process of using WL to adsorb BTA and Pb(2+), compared with that in the absorption on Pb(2+), WL shows a stronger affinity in the adsorption on BTA, and BTA would thus be preferred in the absorption process. The adsorption process of WL on BTA and Pb(2+) is spontaneous and is endothermic monolayer chemisorption. In addition, the adsorption of WL on BTA and Pb(2+) involves many mechanisms, but the main adsorption mechanisms are different. Among them, hydrogen bonding dominates the adsorption on BTA, while functional groups (C-O and C=O) complexation dominates the adsorption on Pb(2+). When WL adsorbs BTA and Pb(2+), the coexistence of cations (K(+), Na(+), and Ca(2+)) has a strong anti-interference ability, and WL can use a lower concentration of fulvic acid (FA) (<20 mg·L(−1)) to improve its adsorption performance. Last but not least, WL has a stable regenerative performance in a one-component system and a binary system, which indicates that WL has excellent potential for the remediation of BTA and Pb(2+) in water. MDPI 2023-05-18 /pmc/articles/PMC10219203/ /pubmed/37240279 http://dx.doi.org/10.3390/ijms24108936 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
Bian, Pengyang
Shao, Qinqin
Performance and Mechanism of Functionalized Water Hyacinth Biochar for Adsorption and Removal of Benzotriazole and Lead in Water
title Performance and Mechanism of Functionalized Water Hyacinth Biochar for Adsorption and Removal of Benzotriazole and Lead in Water
title_full Performance and Mechanism of Functionalized Water Hyacinth Biochar for Adsorption and Removal of Benzotriazole and Lead in Water
title_fullStr Performance and Mechanism of Functionalized Water Hyacinth Biochar for Adsorption and Removal of Benzotriazole and Lead in Water
title_full_unstemmed Performance and Mechanism of Functionalized Water Hyacinth Biochar for Adsorption and Removal of Benzotriazole and Lead in Water
title_short Performance and Mechanism of Functionalized Water Hyacinth Biochar for Adsorption and Removal of Benzotriazole and Lead in Water
title_sort performance and mechanism of functionalized water hyacinth biochar for adsorption and removal of benzotriazole and lead in water
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10219203/
https://www.ncbi.nlm.nih.gov/pubmed/37240279
http://dx.doi.org/10.3390/ijms24108936
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