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Efficient Adsorption of Anionic Dyes by Ammoniated Waste Polyacrylonitrile Fiber: Mechanism and Practicability
[Image: see text] Adsorption is one of the commonly used methods in wastewater treatment, but it has the problem of high cost and a complicated production process. In this paper, a low-cost and efficient decolorizing adsorbent was successfully prepared based on waste polyacrylonitrile fiber (PANF)....
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical Society
2021
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8340109/ https://www.ncbi.nlm.nih.gov/pubmed/34368537 http://dx.doi.org/10.1021/acsomega.1c01780 |
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author | Lei, Manjun Yang, Lihui Shen, Yifeng Yang, Lei Sun, Jie |
author_facet | Lei, Manjun Yang, Lihui Shen, Yifeng Yang, Lei Sun, Jie |
author_sort | Lei, Manjun |
collection | PubMed |
description | [Image: see text] Adsorption is one of the commonly used methods in wastewater treatment, but it has the problem of high cost and a complicated production process. In this paper, a low-cost and efficient decolorizing adsorbent was successfully prepared based on waste polyacrylonitrile fiber (PANF). The waste PANF was ammoniated by propylene diamine derivates (PANA(M)F), and benzylamine (PANA(BM)F) and quaternary ammonium ions (PANQ(M)F) were introduced for PANA(M)F to regulate hydrophilicity and hydrophobicity. With acidic red 249 as the model anionic dye, influences of the adsorption center structure, the degree of modification, the concentration of acid, the dye structure, and the auxiliary agent in the solution on the dye adsorption performance were studied. Isothermal models, kinetic models, reusability, and continuous application ability of the fiber adsorbent were discussed. PANA(M)F, PANA(BM)F, and PANA(Q)F exhibit excellent adsorption performance compared to the common adsorbent. After protonation, the saturation adsorption value can reach 2051.3 mg/g for PANA(M)F. PANA(M)F also exhibited excellent reusability, and the adsorption capacity after being reused eight times still can keep 72.7% of that for the first time. The adsorption of the anionic dye for PANA(M)F is a chemisorption process, and the rate-determining step is changed from the diffuse step to the adsorption on the surface with the adsorption time. PANA(M)F can also be used in the continuous flow process, and the absorption amount is similar to that in the batch adsorption, which shows excellent commercial application potential. |
format | Online Article Text |
id | pubmed-8340109 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | American Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-83401092021-08-06 Efficient Adsorption of Anionic Dyes by Ammoniated Waste Polyacrylonitrile Fiber: Mechanism and Practicability Lei, Manjun Yang, Lihui Shen, Yifeng Yang, Lei Sun, Jie ACS Omega [Image: see text] Adsorption is one of the commonly used methods in wastewater treatment, but it has the problem of high cost and a complicated production process. In this paper, a low-cost and efficient decolorizing adsorbent was successfully prepared based on waste polyacrylonitrile fiber (PANF). The waste PANF was ammoniated by propylene diamine derivates (PANA(M)F), and benzylamine (PANA(BM)F) and quaternary ammonium ions (PANQ(M)F) were introduced for PANA(M)F to regulate hydrophilicity and hydrophobicity. With acidic red 249 as the model anionic dye, influences of the adsorption center structure, the degree of modification, the concentration of acid, the dye structure, and the auxiliary agent in the solution on the dye adsorption performance were studied. Isothermal models, kinetic models, reusability, and continuous application ability of the fiber adsorbent were discussed. PANA(M)F, PANA(BM)F, and PANA(Q)F exhibit excellent adsorption performance compared to the common adsorbent. After protonation, the saturation adsorption value can reach 2051.3 mg/g for PANA(M)F. PANA(M)F also exhibited excellent reusability, and the adsorption capacity after being reused eight times still can keep 72.7% of that for the first time. The adsorption of the anionic dye for PANA(M)F is a chemisorption process, and the rate-determining step is changed from the diffuse step to the adsorption on the surface with the adsorption time. PANA(M)F can also be used in the continuous flow process, and the absorption amount is similar to that in the batch adsorption, which shows excellent commercial application potential. American Chemical Society 2021-07-23 /pmc/articles/PMC8340109/ /pubmed/34368537 http://dx.doi.org/10.1021/acsomega.1c01780 Text en © 2021 The Authors. Published by American Chemical Society https://creativecommons.org/licenses/by-nc-nd/4.0/Permits non-commercial access and re-use, provided that author attribution and integrity are maintained; but does not permit creation of adaptations or other derivative works (https://creativecommons.org/licenses/by-nc-nd/4.0/). |
spellingShingle | Lei, Manjun Yang, Lihui Shen, Yifeng Yang, Lei Sun, Jie Efficient Adsorption of Anionic Dyes by Ammoniated Waste Polyacrylonitrile Fiber: Mechanism and Practicability |
title | Efficient Adsorption of Anionic Dyes by Ammoniated
Waste Polyacrylonitrile Fiber: Mechanism and Practicability |
title_full | Efficient Adsorption of Anionic Dyes by Ammoniated
Waste Polyacrylonitrile Fiber: Mechanism and Practicability |
title_fullStr | Efficient Adsorption of Anionic Dyes by Ammoniated
Waste Polyacrylonitrile Fiber: Mechanism and Practicability |
title_full_unstemmed | Efficient Adsorption of Anionic Dyes by Ammoniated
Waste Polyacrylonitrile Fiber: Mechanism and Practicability |
title_short | Efficient Adsorption of Anionic Dyes by Ammoniated
Waste Polyacrylonitrile Fiber: Mechanism and Practicability |
title_sort | efficient adsorption of anionic dyes by ammoniated
waste polyacrylonitrile fiber: mechanism and practicability |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8340109/ https://www.ncbi.nlm.nih.gov/pubmed/34368537 http://dx.doi.org/10.1021/acsomega.1c01780 |
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