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Using Natural Biomacromolecules for Adsorptive and Enzymatic Removal of Aniline Blue from Water
The present study investigated the adsorptive and enzymatic removal of aniline blue dye (AB) from aqueous solution using waxy riceprocessing waste (RW), peanut shell (PS), microbial waste of Aspergillus niger (MW) as low cost adsorbents, and laccase (Lac) as a biocatalyst. Commercial activated carbo...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6100329/ https://www.ncbi.nlm.nih.gov/pubmed/30004438 http://dx.doi.org/10.3390/molecules23071606 |
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author | You, Xiaojuan Li, Enzhong Liu, Jiayang Li, Songhua |
author_facet | You, Xiaojuan Li, Enzhong Liu, Jiayang Li, Songhua |
author_sort | You, Xiaojuan |
collection | PubMed |
description | The present study investigated the adsorptive and enzymatic removal of aniline blue dye (AB) from aqueous solution using waxy riceprocessing waste (RW), peanut shell (PS), microbial waste of Aspergillus niger (MW) as low cost adsorbents, and laccase (Lac) as a biocatalyst. Commercial activated carbon (AC) was also employed to compare the adsorption performance with the three adsorbents. Dye removal was examined under various parameters in batch experiments. It was found that dye removal by RW and Lac was 89–94% noticeably better than that by MW and PS (20–70%). In any cases, AC produced the highest dye removal among the tested materials. The kinetics, isotherms, and thermodynamics were then analyzed to elucidate the adsorption process by the four adsorbents. The pseudo-second order kinetic was superior to the pseudo first order kinetic model in describing adsorption for all adsorbents. The Langmuir model fitted the adsorption process very well, indicating monolayer coverage of dyes on a solid surface. A thermodynamic analysis of enthalpy (ΔH°), entropy (ΔS°), and Gibbs free energy (ΔG°) classified the adsorption as a nonspontaneous and endothermic process. The results reveal diverse natural materials (e.g., processing waste RW) as novel substitutes for traditional activated carbon, as well as laccase as a green catalyst for the treatment of dye wastewater. |
format | Online Article Text |
id | pubmed-6100329 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-61003292018-11-13 Using Natural Biomacromolecules for Adsorptive and Enzymatic Removal of Aniline Blue from Water You, Xiaojuan Li, Enzhong Liu, Jiayang Li, Songhua Molecules Article The present study investigated the adsorptive and enzymatic removal of aniline blue dye (AB) from aqueous solution using waxy riceprocessing waste (RW), peanut shell (PS), microbial waste of Aspergillus niger (MW) as low cost adsorbents, and laccase (Lac) as a biocatalyst. Commercial activated carbon (AC) was also employed to compare the adsorption performance with the three adsorbents. Dye removal was examined under various parameters in batch experiments. It was found that dye removal by RW and Lac was 89–94% noticeably better than that by MW and PS (20–70%). In any cases, AC produced the highest dye removal among the tested materials. The kinetics, isotherms, and thermodynamics were then analyzed to elucidate the adsorption process by the four adsorbents. The pseudo-second order kinetic was superior to the pseudo first order kinetic model in describing adsorption for all adsorbents. The Langmuir model fitted the adsorption process very well, indicating monolayer coverage of dyes on a solid surface. A thermodynamic analysis of enthalpy (ΔH°), entropy (ΔS°), and Gibbs free energy (ΔG°) classified the adsorption as a nonspontaneous and endothermic process. The results reveal diverse natural materials (e.g., processing waste RW) as novel substitutes for traditional activated carbon, as well as laccase as a green catalyst for the treatment of dye wastewater. MDPI 2018-07-02 /pmc/articles/PMC6100329/ /pubmed/30004438 http://dx.doi.org/10.3390/molecules23071606 Text en © 2018 by the authors. 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 (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article You, Xiaojuan Li, Enzhong Liu, Jiayang Li, Songhua Using Natural Biomacromolecules for Adsorptive and Enzymatic Removal of Aniline Blue from Water |
title | Using Natural Biomacromolecules for Adsorptive and Enzymatic Removal of Aniline Blue from Water |
title_full | Using Natural Biomacromolecules for Adsorptive and Enzymatic Removal of Aniline Blue from Water |
title_fullStr | Using Natural Biomacromolecules for Adsorptive and Enzymatic Removal of Aniline Blue from Water |
title_full_unstemmed | Using Natural Biomacromolecules for Adsorptive and Enzymatic Removal of Aniline Blue from Water |
title_short | Using Natural Biomacromolecules for Adsorptive and Enzymatic Removal of Aniline Blue from Water |
title_sort | using natural biomacromolecules for adsorptive and enzymatic removal of aniline blue from water |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6100329/ https://www.ncbi.nlm.nih.gov/pubmed/30004438 http://dx.doi.org/10.3390/molecules23071606 |
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