Coupling adsorption and in-situ Fenton-like oxidation by waste leather-derived materials in continuous flow mode towards sustainable removal of trace antibiotics

Zhou, Chenying; Zhou, Hongyu; Yuan, Yue; Peng, Jiali; Yao, Gang; Zhou, Peng; Lai, Bo

doi:10.1016/j.cej.2021.130370

Cited by 29 publications

(7 citation statements)

References 47 publications

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“…Three rational degradation pathways are proposed in Figure based on the detected products, containing oxidation, hydroxylation, and hydrolysis reactions. In pathway I, the isoxazole ring of SMX was hydroxylated to produce TP-256, which was also detected as a product in a previous study . Subsequently, the isoxazole ring of TP-256 was attacked to undergo ring opening, resulting in the formation of TP-228 after losing the carboxyl group.…”

Section: Resultsmentioning

confidence: 99%

“…In pathway I, the isoxazole ring of SMX was hydroxylated to produce TP-256, which was also detected as a product in a previous study. 46 Subsequently, the isoxazole ring of TP-256 was attacked to undergo ring opening, resulting in the formation of TP-228 after losing the carboxyl group. The breakage of the C−S and N−S bonds immediately followed to produce TP-94 and TP-156, and TP-94 further oxidized to produce TP-110 and TP-108 eventually.…”

Section: Pathways Of Smx Degradation By the Fe(vi)/hbt Systemmentioning

confidence: 99%

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Enhanced Removal of Sulfamethoxazole by a Fe(VI)/Redox Mediator System: Insights into the Key Role of Fe(V)

et al. 2023

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Ferrate [Fe(VI)] has been widely applied due to its multifunctional effects of flocculation, disinfection, and decontamination in wastewater treatment. To achieve an enhancement for Fe(VI) activity under alkaline conditions, 1-hydroxybenzotriazole (HBT), as an emerging redox mediator, promotes electron transfer to assist Fe(VI) to achieve more excellent decontamination. In this study, the introduction of HBT increases the degradation rate of sulfamethoxazole (SMX) from 53 to 98% at pH 8.0 within 5 min. Surprisingly, quenching and probe experiments indicated that active species are all high-valent iron species rather than radicals (HO· and HBT·) by the Fe(VI)/HBT process. Further research disclosed that the enhancement for SMX degradation with the Fe(VI)/HBT system was driven by the enhancement of Fe(VI) self-decomposition and the formation of more Fe(V) via single-electron transfer by HBT. Moreover, a kinetic model is developed for fitting SMX degradation to reveal that the dominant active species shifts from Fe(IV) to more active Fe(V), reaching nearly 100% SMX degradation as the HBT dosage increased. Furthermore, 12 SMX degradation intermediates are detected using an ultrahigh performance liquid chromatography quadrupole time-of-flight mass spectrometer, and three possible removal pathways are proposed, including oxidation, hydroxylation, and hydrolysis. More importantly, the Fe(VI)/HBT system manifests a great decontamination performance on the coexisting anions, cations, and actual water such as lake, river, and tap water. In summary, this work establishes a new system for the effective removal of pollutants and provides crucial information on the application of ferrate in wastewater treatment.

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Section: Resultsmentioning

confidence: 99%

Section: Pathways Of Smx Degradation By the Fe(vi)/hbt Systemmentioning

confidence: 99%

Enhanced Removal of Sulfamethoxazole by a Fe(VI)/Redox Mediator System: Insights into the Key Role of Fe(V)

et al. 2023

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“…Acid washing treatment of WB was stirred at 1 wt % sulfuric acid solution for 6 h. High-performance liquid chromatography (HPLC, Shimadzu LC-16) was used to determine the concentrations of various organics (Text S2). The concentrations of iron species (trapped by 1,10-phenanthroline), H 2 O 2 (reacted with potassium titanium oxalate), and PDS (reacted with I – ) were monitored by spectrophotometric methods (Texts S3–S5). − An Agilent ICP-OES (5100 SVDV) was used to analyze the concentrations of dissolved tungsten and boron leaching. In addition, the qualitative measurement of intermediates during DCF degradation was carried out using ultra-HPLC quadrupole-time-of-flight-mass-spectrometry (UHPLC-QTOF-MS/MS, Agilent 6500) (Text S6).…”

Section: Methodsmentioning

confidence: 99%

Metal Borides as Excellent Co-Catalysts for Boosted and Long-Lasting Fenton-like Reaction: Dual Co-Catalytic Centers of Metal and Boron

Meng

Sun

Zhang

et al. 2023

Environ. Sci. Technol.

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The continuous electron supply for oxidant decomposition-induced reactive oxygen species (ROS) generation is the main contributor for the long-standing micropollutant oxidation in the iron-based advanced oxidation processes (AOPs). Herein, as a new class of co-catalysts, metal borides with dual active sites and preeminent conductive performance can effectively overcome the inherent drawback of Fenton-like reactions by steadily donating electrons to inactive Fe(III). Among the metal borides, tungsten boride (WB) exhibits a significant co-catalytic performance run ahead of common heterogeneous co-catalysts and exceptionally high stability. Based on qualitative and semi-quantitative tests, the hydroxyl radical, sulfate radical, and iron(IV)-oxo complex are all produced in the WB/Fe(III)/PDS system and Fe(IV)-induced methyl phenyl sulfoxide decomposition is up to 72%. Moreover, the production efficiency of ROS and relative proportions of radical and nonradical pathways change with various experimental conditions (dosages of PDS, WB, and solution pH) and water matrices. The rate-determining step of Fe(II) regeneration is greatly accelerated resulting from the synergetic effect between exposed metallic reactive sites and nonmetallic boron with reductive properties of WB. In addition, the self-dissolution of surface tungsten oxide and boron oxide leads to a renovated surface for sustainable Fe(III) reduction in long-term operations. Our discovery provides an efficient and sustainable strategy in the field of enhanced AOPs for water remediation.

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“…Water resources are facing a serious threat of toxic organic solvents and dyes from metallurgy, 1,2 textile, 3,4 printing, and leather industries, 5,6 which endanger human health. 7,8 It is vital to remove organic pollutants in sewage before discharging.…”

Section: Introductionmentioning

confidence: 99%

Reduced graphene oxide composite aerogel prepared by europium-assisting radiation reduction as a broad-spectrum adsorbent for organic pollutants

et al. 2023

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Coupling adsorption and in-situ Fenton-like oxidation by waste leather-derived materials in continuous flow mode towards sustainable removal of trace antibiotics

Cited by 29 publications

References 47 publications

Enhanced Removal of Sulfamethoxazole by a Fe(VI)/Redox Mediator System: Insights into the Key Role of Fe(V)

Enhanced Removal of Sulfamethoxazole by a Fe(VI)/Redox Mediator System: Insights into the Key Role of Fe(V)

Metal Borides as Excellent Co-Catalysts for Boosted and Long-Lasting Fenton-like Reaction: Dual Co-Catalytic Centers of Metal and Boron

Reduced graphene oxide composite aerogel prepared by europium-assisting radiation reduction as a broad-spectrum adsorbent for organic pollutants

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