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Toward pulping process for enhancing the RS-black liquors as precursor of activated carbons for aqueous adsorbent purposes

This work deals with providing a green pulping process of rice straw with zero waste discharged, via valorization of its by-product as a promising precursor for production of carbon nanostructures. The carbon nanostructures (BL-CNSs) from rice straw pulping liquors (BLs) are prepared in one step wit...

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Autores principales: Lotfy, Vivian F., Bao, Zhichao, Zhou, Xuesong, Basta, Altaf H., Fu, Shiyu
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10654448/
https://www.ncbi.nlm.nih.gov/pubmed/37973917
http://dx.doi.org/10.1038/s41598-023-47447-4
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author Lotfy, Vivian F.
Bao, Zhichao
Zhou, Xuesong
Basta, Altaf H.
Fu, Shiyu
author_facet Lotfy, Vivian F.
Bao, Zhichao
Zhou, Xuesong
Basta, Altaf H.
Fu, Shiyu
author_sort Lotfy, Vivian F.
collection PubMed
description This work deals with providing a green pulping process of rice straw with zero waste discharged, via valorization of its by-product as a promising precursor for production of carbon nanostructures. The carbon nanostructures (BL-CNSs) from rice straw pulping liquors (BLs) are prepared in one step with phosphoric acid activation. The carbon nanostructures (BL-CNSs) from rice straw pulping liquors (BLs) are prepared in one step with phosphoric acid activation. The optimal pulping approach for achieving effective adsorbent (BL-CNSs) of cationic and anionic dyes is recommended from using different BLs precursors resulting from different reagents (alkaline, neutral, and acidic reagents). The carbon precursors are characterized by elemental, thermal (TGA and DTG) and ATR FTIR analyses. While the impact of pulping route on performance of CNSs is evaluated by their adsorption of iodine, cationic dye and anionic dye, as well as ATR-FTIR, textural characterization, and SEM. The data of elemental analysis displayed a high Carbon content ranges from 57.85 to 66.69% suitable for CNSs preparation, while the TGA showed that Sulphur-containing BLs (Kraft, neutral sulfite and acidic sulfite) have higher degradation temperature and activation energies as compared with other BLs. The optimum BL-CNSs adsorbent is prepared from the disposed neutral sulfite black liquor, with the following characteristics: cationic dye adsorption capacity 163.9 mg/g, iodine value 336.9 mg/g and S(BET) 310.6 m(2)/g. While the Kraft-CNSs provided highest anionic adsorption (70.52 mg/g). The studies of equilibrium and kinetic adsorption of dyes showed that the adsorption equilibrium of all investigated BL-CNSs toward MB follow the Langmuir and mainly Freundlich models for BB adoption. Their adsorption kinetics are a good fit with the pseudo-second-order model. The textural characterization and SEM revealed the CNSs exhibit a mixture of mesoporous and microporous structure.
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spelling pubmed-106544482023-11-16 Toward pulping process for enhancing the RS-black liquors as precursor of activated carbons for aqueous adsorbent purposes Lotfy, Vivian F. Bao, Zhichao Zhou, Xuesong Basta, Altaf H. Fu, Shiyu Sci Rep Article This work deals with providing a green pulping process of rice straw with zero waste discharged, via valorization of its by-product as a promising precursor for production of carbon nanostructures. The carbon nanostructures (BL-CNSs) from rice straw pulping liquors (BLs) are prepared in one step with phosphoric acid activation. The carbon nanostructures (BL-CNSs) from rice straw pulping liquors (BLs) are prepared in one step with phosphoric acid activation. The optimal pulping approach for achieving effective adsorbent (BL-CNSs) of cationic and anionic dyes is recommended from using different BLs precursors resulting from different reagents (alkaline, neutral, and acidic reagents). The carbon precursors are characterized by elemental, thermal (TGA and DTG) and ATR FTIR analyses. While the impact of pulping route on performance of CNSs is evaluated by their adsorption of iodine, cationic dye and anionic dye, as well as ATR-FTIR, textural characterization, and SEM. The data of elemental analysis displayed a high Carbon content ranges from 57.85 to 66.69% suitable for CNSs preparation, while the TGA showed that Sulphur-containing BLs (Kraft, neutral sulfite and acidic sulfite) have higher degradation temperature and activation energies as compared with other BLs. The optimum BL-CNSs adsorbent is prepared from the disposed neutral sulfite black liquor, with the following characteristics: cationic dye adsorption capacity 163.9 mg/g, iodine value 336.9 mg/g and S(BET) 310.6 m(2)/g. While the Kraft-CNSs provided highest anionic adsorption (70.52 mg/g). The studies of equilibrium and kinetic adsorption of dyes showed that the adsorption equilibrium of all investigated BL-CNSs toward MB follow the Langmuir and mainly Freundlich models for BB adoption. Their adsorption kinetics are a good fit with the pseudo-second-order model. The textural characterization and SEM revealed the CNSs exhibit a mixture of mesoporous and microporous structure. Nature Publishing Group UK 2023-11-16 /pmc/articles/PMC10654448/ /pubmed/37973917 http://dx.doi.org/10.1038/s41598-023-47447-4 Text en © The Author(s) 2023 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Lotfy, Vivian F.
Bao, Zhichao
Zhou, Xuesong
Basta, Altaf H.
Fu, Shiyu
Toward pulping process for enhancing the RS-black liquors as precursor of activated carbons for aqueous adsorbent purposes
title Toward pulping process for enhancing the RS-black liquors as precursor of activated carbons for aqueous adsorbent purposes
title_full Toward pulping process for enhancing the RS-black liquors as precursor of activated carbons for aqueous adsorbent purposes
title_fullStr Toward pulping process for enhancing the RS-black liquors as precursor of activated carbons for aqueous adsorbent purposes
title_full_unstemmed Toward pulping process for enhancing the RS-black liquors as precursor of activated carbons for aqueous adsorbent purposes
title_short Toward pulping process for enhancing the RS-black liquors as precursor of activated carbons for aqueous adsorbent purposes
title_sort toward pulping process for enhancing the rs-black liquors as precursor of activated carbons for aqueous adsorbent purposes
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10654448/
https://www.ncbi.nlm.nih.gov/pubmed/37973917
http://dx.doi.org/10.1038/s41598-023-47447-4
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