Reusable aminated electrospun nanofiber mat for enhanced phosphorus removal: Fabrication and performance evaluation

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F26%3A0199666" target="_blank" >RIV/00216305:26620/26:0199666 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/abs/pii/S1383586625033969?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/abs/pii/S1383586625033969?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.seppur.2025.134799" target="_blank" >10.1016/j.seppur.2025.134799</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Reusable aminated electrospun nanofiber mat for enhanced phosphorus removal: Fabrication and performance evaluation

Popis výsledku v původním jazyce

To address the issue of eutrophication in natural water bodies, it is essential to remove phosphorus from discharged wastewater. In this study, we developed an aminated polyacrylonitrile@polyethylenimine (APP) nanofiber mat incorporated with zeolitic imidazolate frameworks-8 (ZIF-8), denoted as APPZ-X, where "X" represents the weight ratio of ZIF-8 relative to the polyethylenimine (PEI) polymer. The optimized nanofiber mat (APPZ-5) demonstrated a high phosphorus adsorption capacity of 139.07 mg-Pg(-1) and rapid kinetics, reaching equilibrium within 90 min. This enhanced performance stems from the abundant functional groups introduced through PEI amination of PAN and ZIF-8 incorporation. PEI functionalization conferred superhydrophilicity, while ZIF-8 reduced nanofiber diameters and increased surface roughness, enhancing phosphorus adsorption. The adsorption process best fitted the Redlich-Peterson isotherm model. Column adsorption data aligned closely with the Clark model, indicating ligand exchange and multilayer adsorption mechanisms. The adsorption mechanism was further elucidated through systematic Fourier Transform Infrared (FTIR) spectroscopy and X-ray Photoelectron Spectroscopy (XPS) analyses. Notably, APPZ-5 maintained high phosphorus removal efficiency over 10 consecutive cycles, demonstrating excellent reusability. These results underscore its significant potential as a durable adsorbent for long-term water phosphorus removal.

Název v anglickém jazyce

Reusable aminated electrospun nanofiber mat for enhanced phosphorus removal: Fabrication and performance evaluation

Popis výsledku anglicky

To address the issue of eutrophication in natural water bodies, it is essential to remove phosphorus from discharged wastewater. In this study, we developed an aminated polyacrylonitrile@polyethylenimine (APP) nanofiber mat incorporated with zeolitic imidazolate frameworks-8 (ZIF-8), denoted as APPZ-X, where "X" represents the weight ratio of ZIF-8 relative to the polyethylenimine (PEI) polymer. The optimized nanofiber mat (APPZ-5) demonstrated a high phosphorus adsorption capacity of 139.07 mg-Pg(-1) and rapid kinetics, reaching equilibrium within 90 min. This enhanced performance stems from the abundant functional groups introduced through PEI amination of PAN and ZIF-8 incorporation. PEI functionalization conferred superhydrophilicity, while ZIF-8 reduced nanofiber diameters and increased surface roughness, enhancing phosphorus adsorption. The adsorption process best fitted the Redlich-Peterson isotherm model. Column adsorption data aligned closely with the Clark model, indicating ligand exchange and multilayer adsorption mechanisms. The adsorption mechanism was further elucidated through systematic Fourier Transform Infrared (FTIR) spectroscopy and X-ray Photoelectron Spectroscopy (XPS) analyses. Notably, APPZ-5 maintained high phosphorus removal efficiency over 10 consecutive cycles, demonstrating excellent reusability. These results underscore its significant potential as a durable adsorbent for long-term water phosphorus removal.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20401 - Chemical engineering (plants, products)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Separation and purification technology

ISSN

1383-5866

e-ISSN

1873-3794

Svazek periodika

379

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

12

Strana od-do

—

Kód UT WoS článku

001571157400010

EID výsledku v databázi Scopus

2-s2.0-105013869317