Please use this identifier to cite or link to this item:
http://hdl.handle.net/10773/29270
Title: | Core-shell molecularly imprinted polymers on magnetic yeast for the removal of sulfamethoxazole from water |
Author: | Liang Qiu Jaria, Guilaine Gil, María Victoria Jundong Feng Yaodong Dai Esteves, Valdemar I. Otero, Marta Calisto, Vânia |
Keywords: | Antibiotics Emerging contaminants Pharmaceuticals Wastewater treatment Polymeric adsorbents Magnetization |
Issue Date: | Jun-2020 |
Publisher: | MDPI |
Abstract: | In this work, magnetic yeast (MY) was produced through an in situ one-step method. Then, MY was used as the core and the antibiotic sulfamethoxazole (SMX) as the template to produce highly selective magnetic yeast-molecularly imprinted polymers (MY@MIPs). The physicochemical properties of MY@MIPs were assessed by Fourier-transform infrared spectroscopy (FT-IR), a vibrating sample magnetometer (VSM), X-ray diffraction (XRD), thermogravimetric analysis (TGA), specific surface area (SBET) determination, and scanning electron microscopy (SEM). Batch adsorption experiments were carried out to compare MY@MIPs with MY and MY@NIPs (magnetic yeast-molecularly imprinted polymers without template), with MY@MIPs showing a better performance in the removal of SMX from water. Adsorption of SMX onto MY@MIPs was described by the pseudo-second-order kinetic model and the Langmuir isotherm, with maximum adsorption capacities of 77 and 24 mg g-1 from ultrapure and wastewater, respectively. Furthermore, MY@MIPs displayed a highly selective adsorption toward SMX in the presence of other pharmaceuticals, namely diclofenac (DCF) and carbamazepine (CBZ). Finally, regeneration experiments showed that SMX adsorption decreased 21 and 34% after the first and second regeneration cycles, respectively. This work demonstrates that MY@MIPs are promising sorbent materials for the selective removal of SMX from wastewater. |
Peer review: | yes |
URI: | http://hdl.handle.net/10773/29270 |
DOI: | 10.3390/polym12061385 |
ISSN: | 2073-4360 |
Publisher Version: | https://www.mdpi.com/2073-4360/12/6/1385 |
Appears in Collections: | CESAM - Artigos DAO - Artigos DQ - Artigos |
Files in This Item:
File | Description | Size | Format | |
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2020_Core−Shell Molecularly Imprinted Polymers on Magnetic Yeast_POLYMERS.pdf | 3.95 MB | Adobe PDF | View/Open |
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