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Synthesis, Characterization, and Utilization of a Lignin-Based Adsorbent for Effective Removal of Azo Dye from Aqueous Solution
[Image: see text] How to effectively remove toxic dyes from the industrial wastewater using a green low-cost lignocellulose-based adsorbent, such as lignin, has become a topic of great interest but remains quite challenging. In this study, cosolvent-enhanced lignocellulosic fractionation (CELF) pret...
Autores principales: | , , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical Society
2020
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7033985/ https://www.ncbi.nlm.nih.gov/pubmed/32095708 http://dx.doi.org/10.1021/acsomega.9b03717 |
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author | Meng, Xianzhi Scheidemantle, Brent Li, Mi Wang, Yun-yan Zhao, Xianhui Toro-González, Miguel Singh, Priyanka Pu, Yunqiao Wyman, Charles E. Ozcan, Soydan Cai, Charles M. Ragauskas, Arthur J. |
author_facet | Meng, Xianzhi Scheidemantle, Brent Li, Mi Wang, Yun-yan Zhao, Xianhui Toro-González, Miguel Singh, Priyanka Pu, Yunqiao Wyman, Charles E. Ozcan, Soydan Cai, Charles M. Ragauskas, Arthur J. |
author_sort | Meng, Xianzhi |
collection | PubMed |
description | [Image: see text] How to effectively remove toxic dyes from the industrial wastewater using a green low-cost lignocellulose-based adsorbent, such as lignin, has become a topic of great interest but remains quite challenging. In this study, cosolvent-enhanced lignocellulosic fractionation (CELF) pretreatment and Mannich reaction were combined to generate an aminated CELF lignin which is subsequently applied for removal of methylene blue and direct blue (DB) 1 dye from aqueous solution. (31)P NMR was used to track the degree of amination, and an orthogonal design was applied to determine the relationship between the extent of amination and reaction parameters. The physicochemical, morphological, and thermal properties of the aminated CELF lignin were characterized to confirm the successful grafting of diethylenetriamine onto the lignin. The aminated CELF lignin proved to be an effective azo dye-adsorbent, demonstrating considerably enhanced dye decolorization, especially toward DB 1 dye (>90%). It had a maximum adsorption capacity of DB 1 dye of 502.7 mg/g, and the kinetic study suggested the adsorption process conformed to a pseudo-second-order kinetic model. The isotherm results also showed that the modified lignin-based adsorbent exhibited monolayer adsorption. The adsorbent properties were mainly attributed to the incorporated amine functionalities as well as the increased specific surface area of the aminated CELF lignin. |
format | Online Article Text |
id | pubmed-7033985 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | American Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-70339852020-02-24 Synthesis, Characterization, and Utilization of a Lignin-Based Adsorbent for Effective Removal of Azo Dye from Aqueous Solution Meng, Xianzhi Scheidemantle, Brent Li, Mi Wang, Yun-yan Zhao, Xianhui Toro-González, Miguel Singh, Priyanka Pu, Yunqiao Wyman, Charles E. Ozcan, Soydan Cai, Charles M. Ragauskas, Arthur J. ACS Omega [Image: see text] How to effectively remove toxic dyes from the industrial wastewater using a green low-cost lignocellulose-based adsorbent, such as lignin, has become a topic of great interest but remains quite challenging. In this study, cosolvent-enhanced lignocellulosic fractionation (CELF) pretreatment and Mannich reaction were combined to generate an aminated CELF lignin which is subsequently applied for removal of methylene blue and direct blue (DB) 1 dye from aqueous solution. (31)P NMR was used to track the degree of amination, and an orthogonal design was applied to determine the relationship between the extent of amination and reaction parameters. The physicochemical, morphological, and thermal properties of the aminated CELF lignin were characterized to confirm the successful grafting of diethylenetriamine onto the lignin. The aminated CELF lignin proved to be an effective azo dye-adsorbent, demonstrating considerably enhanced dye decolorization, especially toward DB 1 dye (>90%). It had a maximum adsorption capacity of DB 1 dye of 502.7 mg/g, and the kinetic study suggested the adsorption process conformed to a pseudo-second-order kinetic model. The isotherm results also showed that the modified lignin-based adsorbent exhibited monolayer adsorption. The adsorbent properties were mainly attributed to the incorporated amine functionalities as well as the increased specific surface area of the aminated CELF lignin. American Chemical Society 2020-02-06 /pmc/articles/PMC7033985/ /pubmed/32095708 http://dx.doi.org/10.1021/acsomega.9b03717 Text en Copyright © 2020 American Chemical Society This is an open access article published under an ACS AuthorChoice License (http://pubs.acs.org/page/policy/authorchoice_termsofuse.html) , which permits copying and redistribution of the article or any adaptations for non-commercial purposes. |
spellingShingle | Meng, Xianzhi Scheidemantle, Brent Li, Mi Wang, Yun-yan Zhao, Xianhui Toro-González, Miguel Singh, Priyanka Pu, Yunqiao Wyman, Charles E. Ozcan, Soydan Cai, Charles M. Ragauskas, Arthur J. Synthesis, Characterization, and Utilization of a Lignin-Based Adsorbent for Effective Removal of Azo Dye from Aqueous Solution |
title | Synthesis, Characterization, and Utilization of a
Lignin-Based Adsorbent for Effective Removal of Azo Dye from Aqueous
Solution |
title_full | Synthesis, Characterization, and Utilization of a
Lignin-Based Adsorbent for Effective Removal of Azo Dye from Aqueous
Solution |
title_fullStr | Synthesis, Characterization, and Utilization of a
Lignin-Based Adsorbent for Effective Removal of Azo Dye from Aqueous
Solution |
title_full_unstemmed | Synthesis, Characterization, and Utilization of a
Lignin-Based Adsorbent for Effective Removal of Azo Dye from Aqueous
Solution |
title_short | Synthesis, Characterization, and Utilization of a
Lignin-Based Adsorbent for Effective Removal of Azo Dye from Aqueous
Solution |
title_sort | synthesis, characterization, and utilization of a
lignin-based adsorbent for effective removal of azo dye from aqueous
solution |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7033985/ https://www.ncbi.nlm.nih.gov/pubmed/32095708 http://dx.doi.org/10.1021/acsomega.9b03717 |
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