【學術亮點】Engineered clay-alginate composites for tetracycline removal: Mechanistic insights and sustainable processing
Ecological Agriculture: Optimization and Validation of Soil Carbon Sequestration Prediction Models【Department of Soil Environmental Sciences / Tzou, Yu-Min / Distinguished Professor】
生態農業：土壤碳蓄存之預測模型優化及驗證【土壤環境科學系/鄒裕民特聘教授】
| 論文篇名 | 英文：Engineered clay-alginate composites for tetracycline removal: Mechanistic insights and sustainable processing 中文：工程化黏土-海藻酸鹽複合材料用於四環素去除：作用機制洞察與永續製程 |
| 期刊名稱 | Environmental Research |
| 發表年份,卷數,起迄頁數 | 2025, 282, no. 122023 |
| 作者 | Zhao, Hualing; Ahmed, M. M. M.; Yang, Yating; Li, Yuhan; Wen, Yaqi; Li, Zhaohui; Chang, Po-Hsiang; Tzou, Yu-Min(鄒裕民)* |
| DOI | 10.1016/j.envres.2025.122023 |
| 中文摘要 | 四環素 (TC) 在水體系統中的污染構成了嚴重的環境風險，因此需要開發有效的修復技術。本研究中，我們開發了蒙脫石/海藻酸鈉 (MT/SA) 複合珠，用於去除 TC，並實現了優異的吸附容量（445–499 mg g⁻¹），超越了許多現有材料的報導。XRD 分析揭示了一種雙重吸附機制：在低濃度 TC 下主要是外表面結合，而在高濃度下則為層間吸附。FTIR 分析證實了 TC 與複合基質之間的靜電作用。固定床柱實驗顯示出實際應用潛力：在 150 分鐘內處理了 100 個床體積，將 TC 濃度降低至 0.5 mg L⁻¹ 以下（Ct/C0 = 0.1），其突破曲線與 Thomas 模型高度吻合（r² > 0.98）。從頭算分子動力學模擬顯示了水“橋”、電荷轉移與氫鍵的關鍵貢獻。這些以簡單且可規模化的工藝製備的毫米級複合珠，在操作便利性和降低壓降方面具有實際優勢，使其成為利用黏土–生物聚合物複合材料進行大規模藥物污染物修復的有前景候選材料。 |
| 英文摘要 | 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/C0 = 0.1), with breakthrough curves well-fitted by the Thomas model (r2 > 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 largescale pharmaceutical contaminant remediation using clay–biopolymer composites. |
| 發表成果與本中心研究主題相關性 | 利用天然黏土及生質材料進行永續製程製備複合材料來進行抗生素四環素 (TC) 在水體系統中的移除, 成果與中心永續利用發展的目標一致 |
