| Adsorption of three pharmaceuticals on two magnetic ion-exchange resins |
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| 作者姓名： | Miao Jiang Weiben Yang Ziwei Zhang Zhen Yang Yuping Wang |
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| 作者单位： | School of Chemistry and Materials Science, Jiangsu Provincial Key Laboratory of Materials Cycling and Pollution Control, Nanjing NormalUniversity, Nanjing 210046, China,School of Chemistry and Materials Science, Jiangsu Provincial Key Laboratory of Materials Cycling and Pollution Control, Nanjing NormalUniversity, Nanjing 210046, China,School of Chemistry and Materials Science, Jiangsu Provincial Key Laboratory of Materials Cycling and Pollution Control, Nanjing NormalUniversity, Nanjing 210046, China,School of Chemistry and Materials Science, Jiangsu Provincial Key Laboratory of Materials Cycling and Pollution Control, Nanjing NormalUniversity, Nanjing 210046, China,School of Chemistry and Materials Science, Jiangsu Provincial Key Laboratory of Materials Cycling and Pollution Control, Nanjing NormalUniversity, Nanjing 210046, China |
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| 基金项目： | This study was supported by the National Science Foundation of China (Grant No. 51278253) and the Ministry of Water Resources' Special Funds for Scientific Research on Public Causes (No. 201201018). Additionally, we also appreciate the Foundation of Jiangsu Collaborative Innovation Center of Biomedical Functional Materials and a project funded by the priority academic program development of Jiangsu Higher Education Institutions. |
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| 摘 要： | The presence of pharmaceuticals in aquatic environments poses potential risks to the ecology and human health. This study investigated the removal of three widely detected and abundant pharmaceuticals, namely, ibuprofen (IBU), diclofenac (DC), and sulfadiazine (SDZ), by two magnetic ion-exchange resins. The adsorption kinetics of the three adsorbates onto both resins was relatively fast and followed pseudo-second-order kinetics. Despite the different pore structures of the two resins, similar adsorption patterns of DC and SDZ were observed, implying the existence of an ion-exchange mechanism. IBU demonstrated a combination of interactions during the adsorption process. These interactionswere dependent on the specific surface area and functional groups of the resin. The adsorption isothermfittings verified the differences in the behavior of the three pharmaceuticals on the two magnetic ion-exchange resins. The presence of Cl- and SO42- suppressed the adsorption amount, butwith different inhibition levels for different adsorbates. This work facilitates the understanding of the adsorption behavior andmechanismof pharmaceuticals onmagnetic ion-exchange resins. The results will expand the application of magnetic ion-exchange resins to the removal of pharmaceuticals in waters.
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| 关 键 词： | Pharmaceuticals Adsorption Resins Ion-exchange Electrostatic interactions |
| 收稿时间： | 2014/7/31 0:00:00 |
| 修稿时间： | 2014/9/19 0:00:00 |
Adsorption of three pharmaceuticals on two magnetic ion-exchange resins |
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| Miao Jiang,Weiben Yang,Ziwei Zhang,Zhen Yang,Yuping Wang.Adsorption of three pharmaceuticals on two magnetic ion-exchange resins[J].Journal of Environmental Sciences,2015,27(5):226-234. |
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| Authors: | Miao Jiang Weiben Yang Ziwei Zhang Zhen Yang and Yuping Wang |
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| Institution: | School of Chemistry and Materials Science, Jiangsu Provincial Key Laboratory of Materials Cycling and Pollution Control, Nanjing Normal University, Nanjing 210046, China |
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| Abstract: | The presence of pharmaceuticals in aquatic environments poses potential risks to the ecology and human health. This study investigated the removal of three widely detected and abundant pharmaceuticals, namely, ibuprofen (IBU), diclofenac (DC), and sulfadiazine (SDZ), by two magnetic ion-exchange resins. The adsorption kinetics of the three adsorbates onto both resins was relatively fast and followed pseudo-second-order kinetics. Despite the different pore structures of the two resins, similar adsorption patterns of DC and SDZ were observed, implying the existence of an ion-exchange mechanism. IBU demonstrated a combination of interactions during the adsorption process. These interactionswere dependent on the specific surface area and functional groups of the resin. The adsorption isothermfittings verified the differences in the behavior of the three pharmaceuticals on the two magnetic ion-exchange resins. The presence of Cl- and SO42- suppressed the adsorption amount, butwith different inhibition levels for different adsorbates. This work facilitates the understanding of the adsorption behavior andmechanismof pharmaceuticals onmagnetic ion-exchange resins. The results will expand the application of magnetic ion-exchange resins to the removal of pharmaceuticals in waters. |
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| Keywords: | Pharmaceuticals Adsorption Resins Ion-exchange Electrostatic interactions |
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