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学者姓名:张博翔
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Abstract :
Tetracycline (TC) contamination in aquatic systems poses significant environmental risks, necessitating the development of effective remediation technologies. In this study, montmorillonite/sodium alginate (MT/SA) composite beads were developed for TC removal, achieving outstanding adsorption capacities (445-499 mg g(-1)), exceeding those reported for many existing materials. XRD analysis revealed a dual adsorption mechanism: external surface binding at lower TC concentrations and interlayer adsorption at higher concentrations. FTIR analysis confirmed electrostatic interactions between TC and the composite matrix. Fixed-bed column experiments demonstrated practical applicability, treating 100 bed volumes and reducing TC concentrations to below 0.5 mg L-1 within 150 min (Ct/C-0 = 0.1), with breakthrough curves well-fitted by the Thomas model (r(2) > 0.98). Ab initio molecular dynamics simulations revealed critical contributions from water "bridges," charge transfer, and hydrogen bonding. These millimeter-sized beads, produced via a simple and scalable process, offer practical advantages such as improved handling and reduced pressure drop, making them promising candidates for large-scale pharmaceutical contaminant remediation using clay-biopolymer composites.
Keyword :
Ca-montmorillonite Ca-montmorillonite Cation exchange Cation exchange Column study Column study Molecular simulation Molecular simulation Sodium alginate Sodium alginate Tetracycline Tetracycline
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| GB/T 7714 | Zhao, Hualing , Ahmed, M. M. M. , Yang, Yating et al. Engineered clay-alginate composites for tetracycline removal: Mechanistic insights and sustainable processing [J]. | ENVIRONMENTAL RESEARCH , 2025 , 282 . |
| MLA | Zhao, Hualing et al. "Engineered clay-alginate composites for tetracycline removal: Mechanistic insights and sustainable processing" . | ENVIRONMENTAL RESEARCH 282 (2025) . |
| APA | Zhao, Hualing , Ahmed, M. M. M. , Yang, Yating , Li, Yuhan , Wen, Yaqi , Li, Zhaohui et al. Engineered clay-alginate composites for tetracycline removal: Mechanistic insights and sustainable processing . | ENVIRONMENTAL RESEARCH , 2025 , 282 . |
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Abstract :
天然和改性地质材料的黏土矿物对水环境污染物吸附及移除应用基础研究,系统研究了医学药物、染料、界面活性剂等有机物分子官能基团于固/液界面的阳离子交换化学反应、分子吸附动力学和热力学、分子模拟表征、分子吸附机制。
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| GB/T 7714 | 张博翔 , 杨亚婷 , 李语涵 . 无机地质材料移除水相有机污染物的固碳机制 [C] //能源环境材料与催化研讨会论文集 . 2025 : 1-1 . |
| MLA | 张博翔 et al. "无机地质材料移除水相有机污染物的固碳机制" 能源环境材料与催化研讨会论文集 . (2025) : 1-1 . |
| APA | 张博翔 , 杨亚婷 , 李语涵 . 无机地质材料移除水相有机污染物的固碳机制 能源环境材料与催化研讨会论文集 . (2025) : 1-1 . |
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Extensive use of pharmaceuticals and personal care products has been on the rise in the last half a century globally. Thus, developing new materials or modifying existing materials to improve their performance for contaminant removal has also attracted great attention and such researches have been conducted extensively at the same time. In this study, the fabrication of montmorillonite/sodium alginate (MT/SA) composite beads was performed under freeze drying (FD) and oven drying (OD) conditions. Detailed studies to compare their performance for contaminant removal, using tetracycline hydrochloride (TC) as an example, were conducted under different physico-chemical conditions. Cost effective-wise, MT/SA bead prepared by OD, is much easier than MT/SA bead prepared by FD. Performance-wise, MT/SA/OD is about 10% better in TC adsorption under isotherm, kinetics, other batch studies in comparison to MT/SA/FD. Morphology-wise, MT/SA/OD had better crystal morphology, and well-developed crystal faces in comparison to MT/SA/FD based on SEM studies. Overall, this study is the first to compare the methods for preparing MT/SA composite beads in extensive studies. Future work will be assessing the cost effectiveness of these two methods under different manufacturing conditions and to assess their performance for the adsorption of other aqueous contaminants from water. © 2024, The Authors. All rights reserved.
Keyword :
Adsorption Adsorption Clay minerals Clay minerals Cost effectiveness Cost effectiveness Drying Drying Finite difference method Finite difference method Morphology Morphology Sodium Sodium Sodium alginate Sodium alginate
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| GB/T 7714 | Wen, Yaqi , Yang, Yating , Tzou, Yu-Min et al. The Influence of Drying Methods on the Performance of Tetracycline Adsorption by Montmorillonite/Sodium Alginate Composite Beads [J]. | SSRN , 2024 . |
| MLA | Wen, Yaqi et al. "The Influence of Drying Methods on the Performance of Tetracycline Adsorption by Montmorillonite/Sodium Alginate Composite Beads" . | SSRN (2024) . |
| APA | Wen, Yaqi , Yang, Yating , Tzou, Yu-Min , Chang, Po-Hsiang , Li, Zhaohui . The Influence of Drying Methods on the Performance of Tetracycline Adsorption by Montmorillonite/Sodium Alginate Composite Beads . | SSRN , 2024 . |
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This study utilized sodium alginate (SA), known for its ability to selectively cross-link with certain divalent cations to form ionic gels, making it an ideal carrier for gel materials. In this study, we employed non-toxic Camontmorillonite (STx-1b) as the foundational material and mixed it with SA to produce composite beads containing norfloxacin (NF) for use as oral beads. After evaluating the available concentrations of NF in the market, we selected the lowest concentration of 115 mg g(-1) for our antibacterial efficacy tests, which were conducted as a series of batch studies. Before these experiments, we confirmed that the composite beads successfully encapsulated NF during an 8-h loading period and optimized various parameters including bead stability, the amount and time of NF loading, and desorption rates. Notably, only 10% of the drug was desorbed under acidic conditions (pH 2, simulating gastric juice), indicating minimal loss of NF before reaching the intestinal tract, with the beads exhibiting no disintegration. The composite beads demonstrated significant antibacterial efficacy against Escherichia coli (E. coli), highlighting their potential as competitive alternatives in the field of oral drug delivery. Furthermore, scanning electron microscopy (SEM), X-ray diffraction (XRD), and thermogravimetric analysis (TGA) were utilized to characterize the composite beads. For the disposal of expired beads, TGA results indicated that heating the beads to 350 degrees C would facilitate their disintegration, thereby minimizing environmental impact. Consequently, the composite beads composed of SA and STx-1b are suitable for use as oral beads.
Keyword :
E. coli E. coli Montmorillonite Montmorillonite Norfloxacin Norfloxacin Oral bead Oral bead Sodium alginate Sodium alginate
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| GB/T 7714 | Chang, Po-Hsiang , Liang, Chenxing , Yang, Yating et al. Design and assessment of highly stable norfloxacin/ Ca-montmorillonite (STx-1b) as oral beads [J]. | APPLIED CLAY SCIENCE , 2024 , 258 . |
| MLA | Chang, Po-Hsiang et al. "Design and assessment of highly stable norfloxacin/ Ca-montmorillonite (STx-1b) as oral beads" . | APPLIED CLAY SCIENCE 258 (2024) . |
| APA | Chang, Po-Hsiang , Liang, Chenxing , Yang, Yating , Wen, Yaqi , Lee, Cheng-, I , Ho, Juin-Yen et al. Design and assessment of highly stable norfloxacin/ Ca-montmorillonite (STx-1b) as oral beads . | APPLIED CLAY SCIENCE , 2024 , 258 . |
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This study explores the efficacy of sodium alginate/graphene oxide (SA/GO) composite beads for ethidium bromide (EtBr) removal from aqueous solutions. GO was synthesized and crosslinked with SA to design composite beads, which were evaluated under various physicochemical conditions. Characterization techniques, including FESEM, TGA, XRD, and FTIR, were employed to analyze the beads before and after EtBr adsorption. Results demonstrated rapid EtBr adsorption onto SA/GO, following the Freundlich isotherm model with a maximum adsorption capacity of 2.97 mmol g(-1) (1171.05 mg g(-1)). The influence of solution pH and the negligible role of Br- ions suggested that electrostatic interaction was the primary mechanism for EtBr adsorption on SA/GO. XRD and FTIR analyses revealed that EtBr adsorption also occurred in the interlayer space of SA/GO beads, with the ethidium cations (Et+) entering this space in a horizontal or oblique (>= 45 degrees) orientation. The accumulation of Et+ within the interlayer space was estimated to form 1-6 basic inclined layers. SA/ GO beads demonstrated promising characteristics for EtBr pollutant treatment, including low environmental impact, cost-effectiveness, rapid adsorption kinetics, and high removal efficiency. This study provides valuable insights into the adsorption mechanisms and performance of SA/GO beads, highlighting their potential for future field applications in the environmental remediation of EtBr contamination.
Keyword :
Electrostatic interaction Electrostatic interaction Ethidium bromide Ethidium bromide Graphene oxide Graphene oxide Removal mechanism Removal mechanism Sodium alginate Sodium alginate
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| GB/T 7714 | Chang, Po-Hsiang , Yang, Yating , Wen, Yaqi et al. Efficient ethidium bromide removal using sodium alginate/graphene oxide composite beads: Insights into adsorption mechanisms and performance [J]. | CHEMICAL ENGINEERING JOURNAL , 2024 , 500 . |
| MLA | Chang, Po-Hsiang et al. "Efficient ethidium bromide removal using sodium alginate/graphene oxide composite beads: Insights into adsorption mechanisms and performance" . | CHEMICAL ENGINEERING JOURNAL 500 (2024) . |
| APA | Chang, Po-Hsiang , Yang, Yating , Wen, Yaqi , Ahmed, M. M. M. , Chang, Jou-Chieh , Chang, Ting-Yu et al. Efficient ethidium bromide removal using sodium alginate/graphene oxide composite beads: Insights into adsorption mechanisms and performance . | CHEMICAL ENGINEERING JOURNAL , 2024 , 500 . |
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The accumulation of allelochemicals released by plants is commonly found in continuous monocropping systems. These chemicals, such as phenolic acids, were shown to be the major sources of autotoxin or pathogen accumulation in soils, leading to a direct or indirect continuous cropping obstacle. In this study, three types of agricultural residuals, i.e., rice husk, tea waste, and wood meal, were chosen as feedstocks. Biochar samples were prepared from these feedstocks to examine their abilities to remove gallic acid, a representative phenolic acid. Biochar, which was prepared from wood meal soaked with H3PO4 (1:1.5, w/w) and pyrolyzed at 400 degrees C (symbolized as WP400), exhibited the highest adsorption capacities of gallic acids and other phenolic acids. The mechanisms of phenolic acid removal by WP400 were evaluated via experimental and spectroscopic investigations to elucidate the notable adsorption capacity of WP400. The adsorption of gallic acids was pH-dependent and followed a pseudo-second-order kinetic model. The combination of high surface area, the existence of O-containing groups, and the enhancement of H bonds between C--C groups and phenolic acids may contribute to the high adsorption capacity of WP400. In a pot experiment, we found that celery growth was promoted with the addition of 0.3% (w/w) WP400 to soils that were continuously monocropped with celery. A large decrease in the water-soluble phenolic compound by more than 40% may be responsible for the results. However, WP400 scavenged nitrate, and this study showed that the synergistic actions of WP400 and nutrients exhibited the greatest efficiencies in mitigating the continuous cropping obstacles of celery.
Keyword :
Biochar Biochar Celery Celery Continuous cropping Continuous cropping Phenolic acid Phenolic acid
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| GB/T 7714 | Lin, Chia-Chia , Liu, Yu-Ting , Chang, Po-Hsiang et al. Inhibition of continuous cropping obstacle of celery by chemically modified biochar: An efficient approach to decrease bioavailability of phenolic allelochemicals [J]. | JOURNAL OF ENVIRONMENTAL MANAGEMENT , 2023 , 348 . |
| MLA | Lin, Chia-Chia et al. "Inhibition of continuous cropping obstacle of celery by chemically modified biochar: An efficient approach to decrease bioavailability of phenolic allelochemicals" . | JOURNAL OF ENVIRONMENTAL MANAGEMENT 348 (2023) . |
| APA | Lin, Chia-Chia , Liu, Yu-Ting , Chang, Po-Hsiang , Hsieh, Yi-Cheng , Tzou, Yu-Min . Inhibition of continuous cropping obstacle of celery by chemically modified biochar: An efficient approach to decrease bioavailability of phenolic allelochemicals . | JOURNAL OF ENVIRONMENTAL MANAGEMENT , 2023 , 348 . |
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The presence of antibiotics in soil and water raises great health concerns because they may increase the development of harmful antibiotic-resistant bacteria. In this study, composite beads prepared from 2:1 or 1:1 ratios of montmorillonite (Mt) and sodium alginate (SA) were used to adsorb tetracycline hydrochloride (TC), an antibiotic commonly found in aqueous systems. The equilibrium time for TC adsorption onto the Mt/SA was 8 h, and the kinetic data were consistent with the pseudo-second-order model. The adsorption isotherm was described with the Langmuir equation. The maximum amounts of TC adsorbed were 745, 689, and 445 mg g- 1 for the 2:1- and 1:1-Mt/SA and the original Mt, respectively. The Mt/SA composite beads exhibited porous structures; however, this did not play a key role in TC removal, as previously reported. Cation exchange was the major adsorption mechanism, and electrostatic attraction and hydrogen bonding between the SA and TC also contributed to TC adsorption on the Mt/SA composite beads. In addition, the migration of a small amount of TC into the inner spaces of the beads led to the intercalation of the TC in the Mt interlayers and enhanced TC adsorption by the Mt/SA composite beads.
Keyword :
Cation exchange Cation exchange Montmorillonite Montmorillonite Sodium alginate Sodium alginate Tetracycline Tetracycline Water treatment Water treatment
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| GB/T 7714 | Chang, Po-Hsiang , Mukhopadhyay, Raj , Sarkar, Binoy et al. Insight and mechanisms of tetracycline adsorption on sodium alginate/ montmorillonite composite beads [J]. | APPLIED CLAY SCIENCE , 2023 , 245 . |
| MLA | Chang, Po-Hsiang et al. "Insight and mechanisms of tetracycline adsorption on sodium alginate/ montmorillonite composite beads" . | APPLIED CLAY SCIENCE 245 (2023) . |
| APA | Chang, Po-Hsiang , Mukhopadhyay, Raj , Sarkar, Binoy , Mei, Yun-Cheng , Hsu, Chih-Hsun , Tzou, Yu-Min . Insight and mechanisms of tetracycline adsorption on sodium alginate/ montmorillonite composite beads . | APPLIED CLAY SCIENCE , 2023 , 245 . |
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Abstract :
The accumulation of allelochemicals released by plants is commonly found in continuous monocropping systems. These chemicals, such as phenolic acids, were shown to be the major sources of autotoxin or pathogen accumulation in soils, leading to a direct or indirect continuous cropping obstacle. In this study, three types of agricultural residuals, i.e., rice husk, tea waste, and wood meal, were chosen as feedstocks, and a total of 186 biochar samples were prepared to examine their abilities to remove gallic acid, a representative phenolic acid. Biochar, which was prepared from wood meal soaked with H3PO4 (1:1.5, w/w) and pyrolyzed at 400 °C (symbolized as WP400), exhibited the highest adsorption capacities of gallic acids and other phenolic acids. The mechanisms of phenolic acid removal by WP400 were evaluated via experimental and spectroscopic investigations to elucidate the notable adsorption capacity of WP400. The adsorption of gallic acids was pH-dependent and followed a pseudo-second-order kinetic model. The combination of high surface area, the existence of O-containing groups, and the enhancement of H bonds between C=C groups and phenolic acids may contribute to the high adsorption capacity of WP400. In a pot experiment, we found that celery growth was promoted with the addition of 0.3% (w/w) WP400 to soils that were continuously monocropped with celery. A large decrease in the water-soluble phenolic compound by more than 40% may be responsible for the results. However, WP400 scavenged nitrate, and this study showed that the synergistic actions of WP400 and nutrients exhibited the greatest efficiencies in mitigating the continuous cropping obstacles of celery. © 2023, The Authors. All rights reserved.
Keyword :
Adsorption Adsorption Biochemistry Biochemistry Organic acids Organic acids Plants (botany) Plants (botany)
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| GB/T 7714 | Lin, Chia-Chia , Tzou, Yu-Min , Liu, Yu-Ting et al. Inhibition Of Continuous Cropping Obstacle of Celery by Chemically Modified Biochar: An Efficient Approach to Decrease Bioavailability of Phenolic Allelochemicals [J]. | SSRN , 2023 . |
| MLA | Lin, Chia-Chia et al. "Inhibition Of Continuous Cropping Obstacle of Celery by Chemically Modified Biochar: An Efficient Approach to Decrease Bioavailability of Phenolic Allelochemicals" . | SSRN (2023) . |
| APA | Lin, Chia-Chia , Tzou, Yu-Min , Liu, Yu-Ting , Chang, Po-Hsiang , Hsieh, Yi-Cheng . Inhibition Of Continuous Cropping Obstacle of Celery by Chemically Modified Biochar: An Efficient Approach to Decrease Bioavailability of Phenolic Allelochemicals . | SSRN , 2023 . |
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Poly-and perfluoro alkyl substances (PFAS) are a group of man-made, notoriously persistent, and highly toxic contaminants in the environment reported worldwide. Many adsorbents including granular acti-vated carbon, graphene, biochar, zeolites, and clay minerals have been tested for PFAS removal from water, but most of these materials suffer from high cost and/or poor removal performance. Here, we syn-thesized, characterized, and examined the efficiency of PCN-222(Fe), a new porous metal organic frame-work (MOF) with high water stability, for adsorptive removal of a frequently occurring PFAS, perfluorooctane sulfonate (PFOS), from water. The adsorption isotherm and kinetic studies revealed high PFOS adsorption capacity of PCN-222 (2257 mg/g), with rapid PFOS removal rate (within 30 min). The structure of PCN-222 was unaffected in water in the pH range of 2-10 but disintegrated and lost its PFOS removal ability at pH > 10. The PFOS adsorption on PCN-222 was an endothermic reaction. Electrostatic attraction was a dominant mechanism for PFOS adsorption at < 1694 mg/g PFOS concentra-tion, while hydrophobic interaction accompanied with hydrogen-bonding was responsible at >= 1694 mg/ g PFOS concentration. The interlayer morphology of PCN-222 did not change due to increasing PFOS loading. The findings of this study demonstrated superior features of PCN-222 over other conventional adsorbents for its potential application in removing PFOS from contaminated water to reduce PFOS trans-fer from water to living organisms.(c) 2023 Published by Elsevier Inc.
Keyword :
Adsorption Adsorption Metal organic frameworks Metal organic frameworks Partition coefficient Partition coefficient Poly-and perfluoro alkyl substances Poly-and perfluoro alkyl substances Water treatment Water treatment
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| GB/T 7714 | Chang, Po-Hsiang , Mukhopadhyay, Raj , Zhong, Bo et al. Synthesis and characterization of PCN-222 metal organic framework and its application for removing perfluorooctane sulfonate from water [J]. | JOURNAL OF COLLOID AND INTERFACE SCIENCE , 2023 , 636 : 459-469 . |
| MLA | Chang, Po-Hsiang et al. "Synthesis and characterization of PCN-222 metal organic framework and its application for removing perfluorooctane sulfonate from water" . | JOURNAL OF COLLOID AND INTERFACE SCIENCE 636 (2023) : 459-469 . |
| APA | Chang, Po-Hsiang , Mukhopadhyay, Raj , Zhong, Bo , Yang, Qing-Yuan , Zhou, Shungui , Tzou, Yu-Min et al. Synthesis and characterization of PCN-222 metal organic framework and its application for removing perfluorooctane sulfonate from water . | JOURNAL OF COLLOID AND INTERFACE SCIENCE , 2023 , 636 , 459-469 . |
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| GB/T 7714 | Chang, Po-Hsiang , Mukhopadhyay, Raj . Nano Minerals Applications in Pollutants Removal: A New Open Special Issue in Materials [J]. | MATERIALS , 2022 , 15 (19) . |
| MLA | Chang, Po-Hsiang et al. "Nano Minerals Applications in Pollutants Removal: A New Open Special Issue in Materials" . | MATERIALS 15 . 19 (2022) . |
| APA | Chang, Po-Hsiang , Mukhopadhyay, Raj . Nano Minerals Applications in Pollutants Removal: A New Open Special Issue in Materials . | MATERIALS , 2022 , 15 (19) . |
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