Cargando…

Fenton-Like Oxidation of Antibiotic Ornidazole Using Biochar-Supported Nanoscale Zero-Valent Iron as Heterogeneous Hydrogen Peroxide Activator

Biochar (BC)-supported nanoscale zero-valent iron (nZVI-BC) was investigated as a heterogeneous Fenton-like activator to degrade the antibiotic ornidazole (ONZ). The characterization of nZVI-BC indicated that BC could enhance the adsorption of ONZ and reduce the aggregation of nZVI. Thus, nZVI-BC ha...

Descripción completa

Detalles Bibliográficos
Autores principales: Zhang, Yanchang, Zhao, Lin, Yang, Yongkui, Sun, Peizhe
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7068595/
https://www.ncbi.nlm.nih.gov/pubmed/32092868
http://dx.doi.org/10.3390/ijerph17041324
_version_ 1783505616204988416
author Zhang, Yanchang
Zhao, Lin
Yang, Yongkui
Sun, Peizhe
author_facet Zhang, Yanchang
Zhao, Lin
Yang, Yongkui
Sun, Peizhe
author_sort Zhang, Yanchang
collection PubMed
description Biochar (BC)-supported nanoscale zero-valent iron (nZVI-BC) was investigated as a heterogeneous Fenton-like activator to degrade the antibiotic ornidazole (ONZ). The characterization of nZVI-BC indicated that BC could enhance the adsorption of ONZ and reduce the aggregation of nZVI. Thus, nZVI-BC had a higher removal efficiency (80.1%) than nZVI and BC. The effects of parameters such as the nZVI/BC mass ratio, pH, H(2)O(2) concentration, nZVI-BC dose, and temperature were systematically investigated, and the removal of ONZ followed a pseudo-second-order kinetic model. Finally, possible pathways of ONZ in the oxidation process were proposed. The removal mechanism included the adsorption of ONZ onto the surface of nZVI-BC, the generation of •OH by the reaction of nZVI with H(2)O(2), and the oxidation of ONZ. Recycling experiments indicated that the nZVI-BC/H(2)O(2) system is a promising alternative for the treatment of wastewater containing ONZ.
format Online
Article
Text
id pubmed-7068595
institution National Center for Biotechnology Information
language English
publishDate 2020
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-70685952020-03-19 Fenton-Like Oxidation of Antibiotic Ornidazole Using Biochar-Supported Nanoscale Zero-Valent Iron as Heterogeneous Hydrogen Peroxide Activator Zhang, Yanchang Zhao, Lin Yang, Yongkui Sun, Peizhe Int J Environ Res Public Health Article Biochar (BC)-supported nanoscale zero-valent iron (nZVI-BC) was investigated as a heterogeneous Fenton-like activator to degrade the antibiotic ornidazole (ONZ). The characterization of nZVI-BC indicated that BC could enhance the adsorption of ONZ and reduce the aggregation of nZVI. Thus, nZVI-BC had a higher removal efficiency (80.1%) than nZVI and BC. The effects of parameters such as the nZVI/BC mass ratio, pH, H(2)O(2) concentration, nZVI-BC dose, and temperature were systematically investigated, and the removal of ONZ followed a pseudo-second-order kinetic model. Finally, possible pathways of ONZ in the oxidation process were proposed. The removal mechanism included the adsorption of ONZ onto the surface of nZVI-BC, the generation of •OH by the reaction of nZVI with H(2)O(2), and the oxidation of ONZ. Recycling experiments indicated that the nZVI-BC/H(2)O(2) system is a promising alternative for the treatment of wastewater containing ONZ. MDPI 2020-02-19 2020-02 /pmc/articles/PMC7068595/ /pubmed/32092868 http://dx.doi.org/10.3390/ijerph17041324 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Zhang, Yanchang
Zhao, Lin
Yang, Yongkui
Sun, Peizhe
Fenton-Like Oxidation of Antibiotic Ornidazole Using Biochar-Supported Nanoscale Zero-Valent Iron as Heterogeneous Hydrogen Peroxide Activator
title Fenton-Like Oxidation of Antibiotic Ornidazole Using Biochar-Supported Nanoscale Zero-Valent Iron as Heterogeneous Hydrogen Peroxide Activator
title_full Fenton-Like Oxidation of Antibiotic Ornidazole Using Biochar-Supported Nanoscale Zero-Valent Iron as Heterogeneous Hydrogen Peroxide Activator
title_fullStr Fenton-Like Oxidation of Antibiotic Ornidazole Using Biochar-Supported Nanoscale Zero-Valent Iron as Heterogeneous Hydrogen Peroxide Activator
title_full_unstemmed Fenton-Like Oxidation of Antibiotic Ornidazole Using Biochar-Supported Nanoscale Zero-Valent Iron as Heterogeneous Hydrogen Peroxide Activator
title_short Fenton-Like Oxidation of Antibiotic Ornidazole Using Biochar-Supported Nanoscale Zero-Valent Iron as Heterogeneous Hydrogen Peroxide Activator
title_sort fenton-like oxidation of antibiotic ornidazole using biochar-supported nanoscale zero-valent iron as heterogeneous hydrogen peroxide activator
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7068595/
https://www.ncbi.nlm.nih.gov/pubmed/32092868
http://dx.doi.org/10.3390/ijerph17041324
work_keys_str_mv AT zhangyanchang fentonlikeoxidationofantibioticornidazoleusingbiocharsupportednanoscalezerovalentironasheterogeneoushydrogenperoxideactivator
AT zhaolin fentonlikeoxidationofantibioticornidazoleusingbiocharsupportednanoscalezerovalentironasheterogeneoushydrogenperoxideactivator
AT yangyongkui fentonlikeoxidationofantibioticornidazoleusingbiocharsupportednanoscalezerovalentironasheterogeneoushydrogenperoxideactivator
AT sunpeizhe fentonlikeoxidationofantibioticornidazoleusingbiocharsupportednanoscalezerovalentironasheterogeneoushydrogenperoxideactivator