@article{ART003273860},
author={Nan Wang and Yihang Wei and Hejia Sun and Ning Wang and Yonghong Liu and Yunfeng Li},
title={Mechanistic insights into simultaneous adsorption of contaminants in dyeing wastewater using polyurethane-based hierarchical porous adsorbents},
journal={Carbon Letters},
issn={1976-4251},
year={2025},
volume={35},
number={5},
pages={2197-2213},
doi={10.1007/s42823-025-00915-5}
TY - JOUR
AU - Nan Wang
AU - Yihang Wei
AU - Hejia Sun
AU - Ning Wang
AU - Yonghong Liu
AU - Yunfeng Li
TI - Mechanistic insights into simultaneous adsorption of contaminants in dyeing wastewater using polyurethane-based hierarchical porous adsorbents
JO - Carbon Letters
PY - 2025
VL - 35
IS - 5
PB - Korean Carbon Society
SP - 2197
EP - 2213
SN - 1976-4251
AB - The adsorption of a single pollutant can no longer meet the increasingly strict requirements of environmental governance. The easy loss and secondary pollution of powdered adsorbents further hinder the industrialization of adsorption technology. Through in-situ oxidative polymerization and hydrothermal deposition, polyaniline (PANI) and magnetic Fe3O4 nanoparticles were loaded onto a polyurethane (PU) matrix to prepare polyurethane-polyaniline /Fe3O4 (PU-P/F) porous composite loading materials, aiming to simultaneously remove multiple pollutants in wastewater and solve the problem of effective solid–liquid separation at the same time. The synthesized composite material exhibited a high specific surface area (30.08 m2/g) and a hierarchical pore structure. Within a wide pH range (5–7), it showed a synchronous adsorption and removal effect on typical pollutants (ARG, Cr (VI), NO3−-N, TP, MB, NH4+-N) in printing and dyeing wastewater. Equilibrium can be reached within 0.5–2 h, following pseudo-second-order kinetics and Langmuir isotherm model, indicating mainly monolayer chemical adsorption. The continuous column adsorption regeneration test showed that for the simulated mixed wastewater, the continuous adsorption reached saturation after 660 min (53 chromatographic columns), while for the actual wastewater, the continuous column adsorption reached saturation after 535 min (43 chromatographic columns), and the efficiency remains after 8 regenerations. FT-IR and XPS confirmed the REDOX reaction between the –NH—group in polyaniline and Fe in Fe3O4, facilitating the adsorption and transformation of pollutants, while DFT calculations confirmed the strong interaction between polyaniline and anionic pollutants. This research provides ideas for solving the engineering bottleneck of adsorption technology.
KW - Polyurethane;Printing and dyeing wastewater;Co-adsorption;Continuous adsorption
DO - 10.1007/s42823-025-00915-5
ER -
Nan Wang, Yihang Wei, Hejia Sun, Ning Wang, Yonghong Liu and Yunfeng Li. (2025). Mechanistic insights into simultaneous adsorption of contaminants in dyeing wastewater using polyurethane-based hierarchical porous adsorbents. Carbon Letters, 35(5), 2197-2213.
Nan Wang, Yihang Wei, Hejia Sun, Ning Wang, Yonghong Liu and Yunfeng Li. 2025, "Mechanistic insights into simultaneous adsorption of contaminants in dyeing wastewater using polyurethane-based hierarchical porous adsorbents", Carbon Letters, vol.35, no.5 pp.2197-2213. Available from: doi:10.1007/s42823-025-00915-5
Nan Wang, Yihang Wei, Hejia Sun, Ning Wang, Yonghong Liu, Yunfeng Li "Mechanistic insights into simultaneous adsorption of contaminants in dyeing wastewater using polyurethane-based hierarchical porous adsorbents" Carbon Letters 35.5 pp.2197-2213 (2025) : 2197.
Nan Wang, Yihang Wei, Hejia Sun, Ning Wang, Yonghong Liu, Yunfeng Li. Mechanistic insights into simultaneous adsorption of contaminants in dyeing wastewater using polyurethane-based hierarchical porous adsorbents. 2025; 35(5), 2197-2213. Available from: doi:10.1007/s42823-025-00915-5
Nan Wang, Yihang Wei, Hejia Sun, Ning Wang, Yonghong Liu and Yunfeng Li. "Mechanistic insights into simultaneous adsorption of contaminants in dyeing wastewater using polyurethane-based hierarchical porous adsorbents" Carbon Letters 35, no.5 (2025) : 2197-2213.doi: 10.1007/s42823-025-00915-5
Nan Wang; Yihang Wei; Hejia Sun; Ning Wang; Yonghong Liu; Yunfeng Li. Mechanistic insights into simultaneous adsorption of contaminants in dyeing wastewater using polyurethane-based hierarchical porous adsorbents. Carbon Letters, 35(5), 2197-2213. doi: 10.1007/s42823-025-00915-5
Nan Wang; Yihang Wei; Hejia Sun; Ning Wang; Yonghong Liu; Yunfeng Li. Mechanistic insights into simultaneous adsorption of contaminants in dyeing wastewater using polyurethane-based hierarchical porous adsorbents. Carbon Letters. 2025; 35(5) 2197-2213. doi: 10.1007/s42823-025-00915-5
Nan Wang, Yihang Wei, Hejia Sun, Ning Wang, Yonghong Liu, Yunfeng Li. Mechanistic insights into simultaneous adsorption of contaminants in dyeing wastewater using polyurethane-based hierarchical porous adsorbents. 2025; 35(5), 2197-2213. Available from: doi:10.1007/s42823-025-00915-5
Nan Wang, Yihang Wei, Hejia Sun, Ning Wang, Yonghong Liu and Yunfeng Li. "Mechanistic insights into simultaneous adsorption of contaminants in dyeing wastewater using polyurethane-based hierarchical porous adsorbents" Carbon Letters 35, no.5 (2025) : 2197-2213.doi: 10.1007/s42823-025-00915-5
