Facile fabrication of shapeable three-component hydrogen-bonded covalent-organic aerogel as permeable reactive barrier material for efficient in-situ fluoroquinolone contaminated groundwater remediation
SEPARATION AND PURIFICATION TECHNOLOGY(2024)
摘要
Fluoroquinolones (FQs) antibiotics found in groundwater pose hazardous impacts to organisms and humans. Moreover, permeable reactive barrier (PRB) is reckoned as an effective in-situ remediation technique for FQcontaminated groundwater, in which PRB materials with high adsorption capacity and moldability are severely desired. Herein, a shapeable three-component hydrogen-bonded covalent-organic aerogel with sulfonic acid (SLEL-3) was fabricated based on a multiple-component method. The appraisal of SLEL-3 for the capture of levofloxacin (LVF) and ciprofloxacin (CIP) was evaluated systematically through kinetics and isotherms, which exhibited satisfactory adsorption performance in the following aspects: amended adsorption capacity, acceptable removal depth and resistance to ions and acidity/alkalinity. The proposed adsorption mechanisms involved a combination of pore filling effect, electrostatic effect, hydrogen bonding, pi-pi/n-pi electron-donor-acceptor (pi-pi/n pi EDA), Lewis acid-base and hydrophobic/hydrophilic interaction. More importantly, in view of self-shaping ability, adaptability to harsh conditions, high swellability as well as felicitous hydraulic conductivity, novel PRB systems integrating SLEL-3 into 1-D column and 2-D tank in lab-scale study were developed for the capture of LVF, achieving impressive removal efficiencies of 86% and 92.65% over a 72-h period, respectively. Thus, this study provides a new notion of contriving a shapeable, eco-friendly and practicable covalent-organic polymer for potentially efficient in-situ remediation of FQ contaminated groundwater with a large area.
更多查看译文
关键词
Covalent organic polymers,Hydrogen -bonded polymers,Fluoroquinolone antibiotics,Permeable reactive barrier,2-D tank system
AI 理解论文
溯源树
样例
![](https://originalfileserver.aminer.cn/sys/aminer/pubs/mrt_preview.jpeg)
生成溯源树,研究论文发展脉络
Chat Paper
正在生成论文摘要