New insight into enhanced transport of multi-component porous covalent-organic polymers with alkyl chains as injection agents for levofloxacin removal in saturated sand columns

Jia, Aiyuan; Zhao, Yaohua; Li, Zhi; Zhang, Fangyuan; Shi, Can; Liu, Zhisheng; Hong, Maochun

doi:10.1016/j.scitotenv.2022.160773

Cited by 8 publications

(1 citation statement)

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“…Moreover, the weak water-wet surface of SLEL-6 represented by water contact angle of 47.23 , indicated an indispensable role of hydrophobic interaction in the CIP adsorption by SLEL-6 (Figure S10). 47 Additionally, the π π interaction tends to be crucial in the adsorption process relying on π-electron-rich frameworks of both SLEL-6 and CIP, which has been further certificated by XPS characterizations of SLEL-6 and CIP@SLEL-6. Notably, the newly generated peaks at 689.79/688.81 eV in the spectra of F 1s in CIP@SLEL-6 and after CIP adsorption by SLEL-6/SA beads (denoted as CIP@SLEL-6/SA beads) could be attributed to the captured CIP molecules (Figure S6E).…”

Section: Adsorption Mechanismsmentioning

confidence: 97%

Adsorption kinetics, isotherms and mechanisms of three‐component covalent organic polymer/sodium alginate beads for ciprofloxacin removal from aqueous solution

Shi

Bai

Zhang

et al. 2023

Journal of Polymer Science

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Ciprofloxacin (CIP), an important representative fluoroquinolone antibiotic, has been frequently detected in water sources, thus threatening aquatic organisms and human health. In this work, a porous three‐component covalent organic polymer (SLEL‐6) was synthesized through multi‐component (MC) reaction systems for adsorptive removal of CIP from aqueous solution, followed by an encapsulation process to achieve SLEL‐6/sodium alginate (SA) beads with boosted adsorption ability, reusability and recyclability. By virtue of the hierarchical porous natures, functional groups as well as π‐rich skeletons, SLEL‐6 and SLEL‐6/SA beads could deal with CIP contamination effectively. Moreover, the adsorption isotherms of CIP by SLEL‐6 and SLEL‐6/SA beads follow the Langmuir model showing high theoretical maximum adsorption capacities of 57.47 and 163.93 mg g−1, respectively. Furthermore, the plausible mechanisms are proposed according to experimental studies of influencing factors, coupled with characterizations before and after adsorption. This work therefore highlighting the immense potential of COP‐based SA composite beads as new‐type globular adsorbents for eliminating fluoroquinolones from aqueous solution.

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Section: Adsorption Mechanismsmentioning

confidence: 97%