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| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.advisor | 駱尚廉 | zh_TW |
| dc.contributor.advisor | Shang-Lien Lo | en |
| dc.contributor.author | 萊斯利 | zh_TW |
| dc.contributor.author | Lesly Margarita Ramos Flores | en |
| dc.date.accessioned | 2023-09-22T17:31:17Z | - |
| dc.date.available | 2023-11-09 | - |
| dc.date.copyright | 2023-09-22 | - |
| dc.date.issued | 2023 | - |
| dc.date.submitted | 2023-08-11 | - |
| dc.identifier.citation | Ahmed, M. J. (2017). Adsorption of quinolone, tetracycline, and penicillin antibiotics from aqueous solution using activated carbons: Review. Environmental Toxicology and Pharmacology, 50, 1–10.
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| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/90126 | - |
| dc.description.abstract | 環丙沙星是一種廣泛使用的廣譜抗生素，由於其普遍存在以及在各種環境中增加細菌耐藥性的可能性，已成為廢水處理中令人擔憂的污染物。利用可持續方法去除水溶液中的環丙沙星已成為減輕環丙沙星在水體中擴散的必要條件。然而，從農業廢物（例如椰子殼）中提取的活性炭用於去除環丙沙星的應用仍有待探索。本研究論文重點對椰殼活性炭進行綜合表徵，研究其動力學和等溫線機制，探討吸附劑用量、pH 值和初始濃度對環丙沙星去除的影響。此外，還檢查了醫院廢水基質下的吸附行為。 Brunauer-Emmett-Teller 分析表明，椰殼活性炭具有 1,115.85 m2/g 的高表面積和 0.458 cm3/g 的顯著微孔體積，主要包含超過 99% 的微孔。批量吸附實驗表明，初始濃度為20 mg/L、pH 6 時環丙沙星去除效果最佳，4 小時內即可完全去除。使用 Langmuir 等溫線分析確定最大吸附容量，估計為 187.97 mg/g。結果表明，椰殼活性炭對環丙沙星的吸附採用準二級動力學和Langmuir等溫線模型。由於吸附劑和吸附物之間的相互作用主要由化學吸附控制，因此單層的形成變得更容易，這表明活性炭上可接近的表面位點的相關性。此外，吸附過程受到活性炭表面官能團和環丙沙星之間的化學鍵以及靜電相互作用的影響。對醫院廢水的吸附顯示最大去除效率為75.10%，表明廢水中存在的各種有機污染物對活性吸附位點的競爭非常激烈。總體而言，椰殼活性炭有望作為一種經濟有效且可持續的環丙沙星去除吸附材料。 | zh_TW |
| dc.description.abstract | Ciprofloxacin, a widely used broad-spectrum antibiotic, has emerged as a concerning contaminant in wastewater treatment due to its prevalence and the potential for increased bacterial resistance in various environments. The utilization of sustainable methods for ciprofloxacin removal in aqueous solutions has become imperative to mitigate its dispersion in water bodies. However, the application of activated carbon derived from agricultural waste, such as coconut shells, for ciprofloxacin removal remains unexplored. This research thesis focuses on the comprehensive characterization of coconut shell activated carbon, investigating the kinetic and isotherm mechanisms, exploring the influence of adsorbent dosage, pH, and initial concentration on ciprofloxacin removal. Additionally, the adsorption behavior under a hospital effluent matrix is examined. Brunauer-Emmett-Teller analysis revealed that the coconut shell activated carbon possessed a high surface area of 1,115.85 m2/g and a significant microporous volume of 0.458 cm3/g, predominantly comprising more than 99% micropores. Batch adsorption experiments demonstrated that optimal ciprofloxacin removal efficiency was achieved at pH 6, with an initial concentration of 20 mg/L, leading to complete removal within 4 hours. Langmuir isotherm analysis was used to establish the maximum adsorption capacity, which was estimated to be 187.97 mg/g. The outcomes demonstrated that pseudo-second-order kinetics and the Langmuir isotherm model were used in the adsorption of ciprofloxacin onto coconut shell activated carbon. The creation of a monolayer was made easier by the fact that the interaction between the adsorbent and adsorbate was predominantly controlled by chemisorption, showing the relevance of the accessible surface sites on the activated carbon. Furthermore, the adsorption process was influenced by both chemical bonding between the functional groups of the activated carbon surface and ciprofloxacin, as well as electrostatic interactions. The adsorption of wastewater from a hospital effluent revealed a maximum removal efficiency of 75.10%, indicating significant competition for active adsorption sites among the various organic pollutants present in the wastewater. Overall, coconut shell activated carbon demonstrates promise as a cost-effective and sustainable adsorbent material for ciprofloxacin removal. | en |
| dc.description.provenance | Submitted by admin ntu (admin@lib.ntu.edu.tw) on 2023-09-22T17:31:17Z No. of bitstreams: 0 | en |
| dc.description.provenance | Made available in DSpace on 2023-09-22T17:31:17Z (GMT). No. of bitstreams: 0 | en |
| dc.description.tableofcontents | Chapter 1. Introduction 1
1.1 Research background 1 1.2 Statement of the problems 2 1.3 Purpose of the study 2 1.4 Research objectives 3 Chapter 2. Literature review 5 2.1 Ciprofloxacin properties – adsorbate 5 2.2 Ciprofloxacin in wastewater 8 2.3 Ciprofloxacin removal in wastewater 9 2.3.1 Adsorption of ciprofloxacin 10 2.3.2 Influencing parameters of adsorption 12 2.3.3 Activated carbon 13 2.3.3.1 Coconut shell activated carbon 14 2.3.4 Adsorption models 15 2.3.4.1 Adsorption kinetics 15 2.3.4.2 Isothermal adsorption 15 Chapter 3. Research methodology 17 3.1 Experimental design 17 3.2 Materials 18 3.2.1 Chemicals and reagents 18 3.3 Blank experiment 19 3.4 Characterization of activated carbon -adsorbent 19 3.4.1 Adsorption kinetics and isotherm adsorption 20 3.5 Batch adsorption experiment 21 3.5.1 Activated carbon dosage 22 3.5.2 pH value 22 3.5.3 Initial concentration 23 3.6 Realistic wastewater adsorption 23 3.7 Analysis of results 24 3.7.1 Quality control 24 3.8 Analytical methods 26 3.8.1 Characterization of activated carbon -adsorbent 26 3.8.1.1 Brunauer-Emmett-Teller (BET) analyzer 26 3.8.1.2 Fourier Transform Infrared Spectroscopy (FTIR) 28 3.8.1.3 Scanning Electron Microscope Energy-dispersive X-ray spectroscopy (SEM-EDS) 29 3.8.1.4 Zeta potential 31 3.8.2 Measurement of ciprofloxacin- adsorbate 32 3.8.2.1 UV-Vis spectrophotometer 32 3.8.2.2 High-Performance Liquid Chromatography with Diode Array Detector(HPLC-DAD) 33 Chapter 4. Results and discussion 36 4.1 Blank experiment 36 4.2 Physicochemical characterization of activated carbon -adsorbent 37 4.2.1 Bruneauer-Emmett Teller (BET) analysis 37 4.2.2 Fourier Transform Infrared Spectroscopy (FTIR) 39 4.2.3 Scanning Electron Microscope Energy-dispersive X-ray spectroscopy (SEM-EDS) 42 4.2.4 Zeta potential 45 4.3 Adsorption models 46 4.3.1 Adsorption kinetics 46 4.3.2 Adsorption isotherm 48 4.4 Batch Adsorption Experiment 50 4.4.1 Effect of activated carbon dosage on adsorption 50 4.4.2 Effect of initial pH on adsorption 51 4.4.3 Effect of ciprofloxacin initial concentration on adsorption 53 4.5 Practical application 55 4.5.1 Removal effect on hospital effluent wastewater 55 Chapter 5. Conclusions and recommendations 59 5.1 Conclusions 59 5.2 Limitations of the study 60 5.3 Recommendations 60 References 62 | - |
| dc.language.iso | en | - |
| dc.subject | 活性炭 | zh_TW |
| dc.subject | 吸附機理 | zh_TW |
| dc.subject | 環丙沙星 | zh_TW |
| dc.subject | 吸附效率 | zh_TW |
| dc.subject | 廢水 | zh_TW |
| dc.subject | ciprofloxacin | en |
| dc.subject | adsorption mechanism | en |
| dc.subject | adsorption efficiency | en |
| dc.subject | activated carbon | en |
| dc.subject | wastewater | en |
| dc.title | 椰殼活性炭吸附去除環丙沙星 | zh_TW |
| dc.title | Adsorptive Removal of Ciprofloxacin by Coconut Shell Activated Carbon | en |
| dc.type | Thesis | - |
| dc.date.schoolyear | 111-2 | - |
| dc.description.degree | 碩士 | - |
| dc.contributor.oralexamcommittee | 劉 于榕;郭繼汾 | zh_TW |
| dc.contributor.oralexamcommittee | Ju-Jung Liu;Jih-Fen Kuo | en |
| dc.subject.keyword | 活性炭,環丙沙星,吸附機理,吸附效率,廢水, | zh_TW |
| dc.subject.keyword | activated carbon,ciprofloxacin,adsorption mechanism,adsorption efficiency,wastewater, | en |
| dc.relation.page | 70 | - |
| dc.identifier.doi | 10.6342/NTU202304100 | - |
| dc.rights.note | 同意授權(限校園內公開) | - |
| dc.date.accepted | 2023-08-13 | - |
| dc.contributor.author-college | 工學院 | - |
| dc.contributor.author-dept | 環境工程學研究所 | - |
| dc.date.embargo-lift | 2028-08-11 | - |
| 顯示於系所單位： | 環境工程學研究所 | |
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