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Study of Humic Acid Adsorption Character on Natural Maifan Stone: Characterization, Kinetics, Adsorption Isotherm, and Thermodynamics
[Image: see text] In this paper, the adsorption of humic acid (HA) on natural maifan stone (MS) in aqueous medium was investigated. The changes in MS after adsorption have been characterized explicitly. The adsorption behavior was studied by varying the factors of pH (5–10), reaction time (10–180 mi...
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/PMC7144149/ https://www.ncbi.nlm.nih.gov/pubmed/32280912 http://dx.doi.org/10.1021/acsomega.0c00622 |
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author | Yang, Hang Luo, Binhua Zhang, Yi Zhou, Boxun Manzoor Ahmed, Sanjrani Liu, Huamin Liu, Xiaowen He, Yong Xia, Shibin |
author_facet | Yang, Hang Luo, Binhua Zhang, Yi Zhou, Boxun Manzoor Ahmed, Sanjrani Liu, Huamin Liu, Xiaowen He, Yong Xia, Shibin |
author_sort | Yang, Hang |
collection | PubMed |
description | [Image: see text] In this paper, the adsorption of humic acid (HA) on natural maifan stone (MS) in aqueous medium was investigated. The changes in MS after adsorption have been characterized explicitly. The adsorption behavior was studied by varying the factors of pH (5–10), reaction time (10–180 min), initial HA concentration (5–50 mg/L), adsorbent dosage (0.1–1.2 g), and temperature (25–45 °C). The kinetics of the adsorption process of HA was fitted well with the pseudo-second-order model (R(2) = 0.99). The isothermal results revealed that the adsorption process is favorable, and highly fitting Langmuir models (R(2) > 0.99) were used. Additionally, the obtained maximum adsorption capacity of MS for HA was approximately 1 mg/g. The adsorption process of HA onto MS was endothermic according to the thermodynamic study. The changes in the excitation–emission–matrix of HA and the X-ray diffraction of MS after adsorption indicate the interaction of HA and MS. However, the reason for these changes is still unclear. Thus, the results show that the natural MS exhibited a certain adsorption capacity for HA. It is promising to develop novel natural MS-based materials for adsorption of HA. |
format | Online Article Text |
id | pubmed-7144149 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | American Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-71441492020-04-10 Study of Humic Acid Adsorption Character on Natural Maifan Stone: Characterization, Kinetics, Adsorption Isotherm, and Thermodynamics Yang, Hang Luo, Binhua Zhang, Yi Zhou, Boxun Manzoor Ahmed, Sanjrani Liu, Huamin Liu, Xiaowen He, Yong Xia, Shibin ACS Omega [Image: see text] In this paper, the adsorption of humic acid (HA) on natural maifan stone (MS) in aqueous medium was investigated. The changes in MS after adsorption have been characterized explicitly. The adsorption behavior was studied by varying the factors of pH (5–10), reaction time (10–180 min), initial HA concentration (5–50 mg/L), adsorbent dosage (0.1–1.2 g), and temperature (25–45 °C). The kinetics of the adsorption process of HA was fitted well with the pseudo-second-order model (R(2) = 0.99). The isothermal results revealed that the adsorption process is favorable, and highly fitting Langmuir models (R(2) > 0.99) were used. Additionally, the obtained maximum adsorption capacity of MS for HA was approximately 1 mg/g. The adsorption process of HA onto MS was endothermic according to the thermodynamic study. The changes in the excitation–emission–matrix of HA and the X-ray diffraction of MS after adsorption indicate the interaction of HA and MS. However, the reason for these changes is still unclear. Thus, the results show that the natural MS exhibited a certain adsorption capacity for HA. It is promising to develop novel natural MS-based materials for adsorption of HA. American Chemical Society 2020-03-23 /pmc/articles/PMC7144149/ /pubmed/32280912 http://dx.doi.org/10.1021/acsomega.0c00622 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 | Yang, Hang Luo, Binhua Zhang, Yi Zhou, Boxun Manzoor Ahmed, Sanjrani Liu, Huamin Liu, Xiaowen He, Yong Xia, Shibin Study of Humic Acid Adsorption Character on Natural Maifan Stone: Characterization, Kinetics, Adsorption Isotherm, and Thermodynamics |
title | Study of Humic Acid Adsorption Character on Natural
Maifan Stone: Characterization, Kinetics, Adsorption Isotherm, and
Thermodynamics |
title_full | Study of Humic Acid Adsorption Character on Natural
Maifan Stone: Characterization, Kinetics, Adsorption Isotherm, and
Thermodynamics |
title_fullStr | Study of Humic Acid Adsorption Character on Natural
Maifan Stone: Characterization, Kinetics, Adsorption Isotherm, and
Thermodynamics |
title_full_unstemmed | Study of Humic Acid Adsorption Character on Natural
Maifan Stone: Characterization, Kinetics, Adsorption Isotherm, and
Thermodynamics |
title_short | Study of Humic Acid Adsorption Character on Natural
Maifan Stone: Characterization, Kinetics, Adsorption Isotherm, and
Thermodynamics |
title_sort | study of humic acid adsorption character on natural
maifan stone: characterization, kinetics, adsorption isotherm, and
thermodynamics |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7144149/ https://www.ncbi.nlm.nih.gov/pubmed/32280912 http://dx.doi.org/10.1021/acsomega.0c00622 |
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