Please use this identifier to cite or link to this item:
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
Wastewater treatment
Polymeric adsorbents
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
DOI: 10.3390/polym12061385
ISSN: 2073-4360
Publisher Version:
Appears in Collections:CESAM - Artigos
DAO - Artigos
DQ - Artigos

Files in This Item:
File Description SizeFormat 
2020_Core−Shell Molecularly Imprinted Polymers on Magnetic Yeast_POLYMERS.pdf3.95 MBAdobe PDFView/Open

Formato BibTex MendeleyEndnote Degois 

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.