A sustainable nano-hybrid system of laccase@M-MWCNTs for multifunctional PAHs and PhACs removal from water, wastewater, and lake water.

Autor: Grmasha RA; Sustainability Solutions Research Lab, Faculty of Engineering, University of Pannonia, Egyetem str. 10, Veszprém H, 8200, Hungary; Environmental Research and Studies Center, University of Babylon, Babylon, Al-Hillah,51001, Iraq; University of Pannonia, Faculty of Engineering, Center for Natural Science, Research Group of Limnology, H-8200, Veszprem, Egyetem u. 10, Hungary; The School of Civil and Environmental Engineering graduate, University of New South Wales, Sydney, Kensington, NSW, 2052, Australia. Electronic address: ruqayah.grmasha@unswalumni.com., Al-Sareji OJ; Sustainability Solutions Research Lab, Faculty of Engineering, University of Pannonia, Egyetem str. 10, Veszprém H, 8200, Hungary; Environmental Research and Studies Center, University of Babylon, Babylon, Al-Hillah,51001, Iraq; The School of Civil and Environmental Engineering graduate, University of New South Wales, Sydney, Kensington, NSW, 2052, Australia., Meiczinger M; Sustainability Solutions Research Lab, Faculty of Engineering, University of Pannonia, Egyetem str. 10, Veszprém H, 8200, Hungary., Stenger-Kovács C; University of Pannonia, Faculty of Engineering, Center for Natural Science, Research Group of Limnology, H-8200, Veszprem, Egyetem u. 10, Hungary; ELKH-PE Limnoecology Research Group, H-8200, Veszprém, Egyetem utca 10, Hungary., Al-Juboori RA; NYUAD Water Research Center, New York University-Abu Dhabi Campus, Abu Dhabi, P.O. Box 129188, Abu Dhabi, United Arab Emirates; Water and Environmental Engineering Research Group, Department of Built Environment, Aalto University, P.O. Box 15200, Aalto, FI-00076, Espoo, Finland., Jakab M; Research Centre of Engineering Sciences, Department of Materials Sciences and Engineering, University of Pannonia, P.O. Box 158, H-8201, Veszprém, Hungary., Lengyel E; University of Pannonia, Faculty of Engineering, Center for Natural Science, Research Group of Limnology, H-8200, Veszprem, Egyetem u. 10, Hungary; ELKH-PE Limnoecology Research Group, H-8200, Veszprém, Egyetem utca 10, Hungary., Somogyi V; Sustainability Solutions Research Lab, Faculty of Engineering, University of Pannonia, Egyetem str. 10, Veszprém H, 8200, Hungary., Khan MA; Department of Civil Engineering, Galgotia College of Engineering, Greater Noida, 201310, India., Hashim KS; School of Civil Engineering and Built Environment, Liverpool John Moores University, UK; Dijlah University College, Baghdad, Iraq.
Jazyk: angličtina
Zdroj: Environmental research [Environ Res] 2024 Apr 01; Vol. 246, pp. 118097. Date of Electronic Publication: 2024 Jan 02.
DOI: 10.1016/j.envres.2024.118097
Abstrakt: This study examined the use of modified multiwall carbon nanotubes (M-MWCNTs) with immobilized laccase (L@M-MWCNTs) for removing ciprofloxacin (Cip), carbamazepine (Cbz), diclofenac (Dcf), benzo[a]pyrene (Bap), and anthracene (Ant) from different water samples. The synthesized materials were characterized using an array of advanced analytical techniques. The physical immobilization of laccase onto M-MWCNTs was confirmed through Scanning electron microscope (SEM)-dispersive X-ray spectroscopy (EDS) analysis and Brunner-Emmet-Teller (BET) surface area measurements. The specific surface area of M-MWCNTs decreased by 65% upon laccase immobilization. There was also an increase in nitrogen content seen by EDS analysis asserting successful immobilization. The results of Boehm titration and Fourier transform infrared (FTIR) exhibited an increase in acidic functional groups after laccase immobilization. L@M-MWCNTs storage for two months maintained 77.8%, 61.6%, and 57.6% of its initial activity for 4 °C, 25 °C, and 35 °C, respectively. In contrast, the free laccase exhibited 55.3%, 37.5%, and 23.5% of its initial activity at 4 °C, 25 °C, and 35 °C, respectively. MWCNTs improved storability and widened the working temperature range of laccase. The optimum removal conditions of studied pollutants were pH 5, 25 °C, and 1.6 g/L of M-MWCNTs. These parameters led to >90% removal of the targeted pollutants for four treatment cycles of both synthetic water and spiked lake water. L@M-MWCNTs demonstrated consistent removal of >90% for up to five cycles even with spiked wastewater. The adsorption was endothermic and followed Langmuir isotherm. Oxidation, dehydrogenation, hydroxylation, and ring cleavage seem to be the dominant degradation mechanisms.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2024 The Authors. Published by Elsevier Inc. All rights reserved.)
Databáze: MEDLINE
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