Performance of a novel microwave-based treatment technology for atrazine removal and destruction: Sorbent reusability and chemical stability, and effect of water matrices

Hu, Erdan; Hu, Yuanan; Cheng, Hefa

doi:10.1016/j.jhazmat.2015.07.031

Cited by 23 publications

(7 citation statements)

References 46 publications

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“…Several previous studies indicated that the constituents in natural water may influence the removal of contaminants during AOPs, due to the presence of •OH scavengers in the water matrix . Our previous study also found that the water matrix influenced the degradation of NDMA during ozonation .…”

Section: Resultssupporting

confidence: 68%

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Oxidation of N-nitrosodimethylamine in a heterogeneous nanoscale zero-valent iron/H₂O₂Fenton-like system: influencing factors and degradation pathway

Wang

Yang

et al. 2016

J. Chem. Technol. Biotechnol

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Section: Resultssupporting

confidence: 68%

“…Hu et al . indicated that HA concentration was in the range 0.69–8.2 mg L −1 in natural river or lake matrices . Moreover, HA concentration in our collected natural water was only in the range 1.7–2.8 mg L −1 (based on the calculation method of Thurman and Morgan).…”

Section: Resultsmentioning

confidence: 79%

Oxidation of N-nitrosodimethylamine in a heterogeneous nanoscale zero-valent iron/H₂O₂Fenton-like system: influencing factors and degradation pathway

Wang

Yang

et al. 2016

J. Chem. Technol. Biotechnol

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“…The reduced removal of OTC in the system was due to the fact that HA would compete with OTC for ROS to decompose it from macromolecules to smaller fractions. The HA concentration in natural river or lake matrices is in the range 0.69–8.2 mg L –1 38 . Therefore, HA in natural water also has no significant influence on the degradation of OTC in the visible‐light‐driven SCN catalytic system.…”

Section: Resultsmentioning

confidence: 99%

Green synthesis of sulfur‐doped g‐C₃N₄ nanosheets for enhanced removal of oxytetracycline under visible‐light irradiation and reduction of its N‐nitrosodimethylamine formation potential

Dou

Shen

Zou

et al. 2021

J of Chemical Tech & Biotech

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BACKGROUND In this study, sulfur‐doped g‐C3N4 (SCN) nanosheets were synthesized using thiourea as a precursor, and then used to catalyze the degradation of oxytetracycline (OTC) under visible‐light irradiation. OTC was chosen as target contaminant because of it being an important precursor of N‐nitrosodimethylamine (NDMA). RESULTS The removal of OTC was influenced by its initial concentration, initial pH, SCN dosage and water matrices. OTC (≤10 mg L−1) was almost completely removed in 40 min under the conditions of an initial pH of 7.0 and a SCN dose of 1.0 g L−1, and its degradation was well described by the pseudo‐first‐order kinetics model. Water matrices would also influence the degradation of OTC in the system. Electron paramagnetic resonance analysis and trapping experiments confirmed that the function of the radicals for OTC removal followed the order of •O2− > •OH > h+. Eight transformation products were determined during the degradation of OTC, it being removed through four pathways: methyl oxidization, demethylation, decarbonylation and secondary alcohol oxidation. SCN was stable in the system, as the removal efficiency of OTC was not significantly reduced even after three recycles. In addition, 55.5% of NDMA formation potential of OTC was reduced after SCN catalytic oxidation. CONCLUSIONS The results imply that the visible‐light‐driven SCN catalytic oxidation is an effective technology not only for the removal of OTC but also for the reduction of NDMA formation potential. © 2021 Society of Chemical Industry

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“…The principle is that microwave heating generates efficient internal heat-transfer by penetrating subjects and causing uniform energy distribution throughout the material irradiated, which leads to an even chemical reaction [ 137 ]. Microwave irradiation can cause atrazine degradation through formation of micro-scale “hot spots” on the pore wall surface that pyrolyze the absorbed organic molecules [ 138 ].…”

Section: Physicochemical Methodsmentioning

confidence: 99%

Degradation of Residual Herbicide Atrazine in Agri-Food and Washing Water

Hong

Boussetta

Enderlin

et al. 2022

Foods

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Atrazine, an herbicide used to control grassy and broadleaf weed, has become an essential part of agricultural crop protection tools. It is widely sprayed on corn, sorghum and sugar cane, with the attendant problems of its residues in agri-food and washing water. If ingested into humans, this residual atrazine can cause reproductive harm, developmental toxicity and carcinogenicity. It is therefore important to find clean and economical degradation processes for atrazine. In recent years, many physical, chemical and biological methods have been proposed to remove atrazine from the aquatic environment. This review introduces the research works of atrazine degradation in aqueous solutions by method classification. These methods are then compared by their advantages, disadvantages, and different degradation pathways of atrazine. Moreover, the existing toxicological experimental data for atrazine and its metabolites are summarized. Finally, the review concludes with directions for future research and major challenges to be addressed.

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Performance of a novel microwave-based treatment technology for atrazine removal and destruction: Sorbent reusability and chemical stability, and effect of water matrices

Cited by 23 publications

References 46 publications

Oxidation of N-nitrosodimethylamine in a heterogeneous nanoscale zero-valent iron/H₂O₂Fenton-like system: influencing factors and degradation pathway

Oxidation of N-nitrosodimethylamine in a heterogeneous nanoscale zero-valent iron/H₂O₂Fenton-like system: influencing factors and degradation pathway

Green synthesis of sulfur‐doped g‐C₃N₄ nanosheets for enhanced removal of oxytetracycline under visible‐light irradiation and reduction of its N‐nitrosodimethylamine formation potential

Degradation of Residual Herbicide Atrazine in Agri-Food and Washing Water

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Performance of a novel microwave-based treatment technology for atrazine removal and destruction: Sorbent reusability and chemical stability, and effect of water matrices

Cited by 23 publications

References 46 publications

Oxidation of N-nitrosodimethylamine in a heterogeneous nanoscale zero-valent iron/H2O2Fenton-like system: influencing factors and degradation pathway

Oxidation of N-nitrosodimethylamine in a heterogeneous nanoscale zero-valent iron/H2O2Fenton-like system: influencing factors and degradation pathway

Green synthesis of sulfur‐doped g‐C3N4 nanosheets for enhanced removal of oxytetracycline under visible‐light irradiation and reduction of its N‐nitrosodimethylamine formation potential

Degradation of Residual Herbicide Atrazine in Agri-Food and Washing Water

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Oxidation of N-nitrosodimethylamine in a heterogeneous nanoscale zero-valent iron/H₂O₂Fenton-like system: influencing factors and degradation pathway

Oxidation of N-nitrosodimethylamine in a heterogeneous nanoscale zero-valent iron/H₂O₂Fenton-like system: influencing factors and degradation pathway

Green synthesis of sulfur‐doped g‐C₃N₄ nanosheets for enhanced removal of oxytetracycline under visible‐light irradiation and reduction of its N‐nitrosodimethylamine formation potential