Removal of antibiotic tetracycline by metal-organic framework MIL-101(Cr) loaded nano zero-valent iron

Hou, Xiaohong; Shi, Jindou; Wang, Nannan; Wen, Zhidan; Sun, Mingze; Qu, Jianhua; Hu, Qi

doi:10.1016/j.molliq.2020.113512

Cited by 54 publications

(14 citation statements)

References 62 publications

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“…In a series of 100 mL of Erlenmeyer, 0.075 g of the powder was added to 100 mL of KNO 3 (10 -2 M) solution. The pH was adjusted with NaOH and HCl (0.1 M) as needed, to obtain the appropriate pH range (3)(4)(5)(6)(7)(8)(9)(10)(11) with an increment of 1, it was measured with a Hanna HI 2210 pH meter. The pH of the supernatant in each tube was denoted as pH initial .…”

Section: Characterization Techniquesmentioning

confidence: 99%

“…The TC concentrations (10-50 mg/L) were obtained by dilution with distilled water of a stock solution (1000 mg/L). The influence of pH has been studied over the range (3)(4)(5)(6)(7)(8)(9)(10)(11) for an initial concentration of 20 mg/L and a catalyst dose of 1 g/L, the pH was adjusted by NaOH and HCl (0.1 M) and the tests were conducted with variable catalysts doses (0.1-1 g/L). The solutions were left in the dark overnight to ensure complete adsorption.…”

Section: Adsorption and Photocatalytic Processesmentioning

confidence: 99%

“…One of the most important parameters that influence the photodegradation is the pH. Under the optimised conditions (TC concentration 20 mg/L and ZnAl 2 O 4 dose 1 g/L), a study on the degradation efficiency of TC was performed in the pH range (3)(4)(5)(6)(7)(8)(9)(10)(11). The results (Fig.…”

Section: Effect Of the Ph Of The Solutionmentioning

confidence: 99%

“…Antibiotics are among the largest families of pharmaceutical compounds used nowadays, and the tetracyclines represent the second most common antibiotic group in both production and usage, worldwide [1][2][3]. They are extensively used in human and veterinary medicines, and have been detected in both superficial and potable waters and are highly toxic to aquatic organisms [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

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Kinetic and mechanism studies of tetracycline photodegradation using synthesized ZnAl2O4

Hemmi

Belmedani

Mekatel

et al. 2021

Reac Kinet Mech Cat

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In this study, we report the photodegradation of a pharmaceutical pollutant namely the tetracycline (TC) onto the spinel ZnAl 2 O 4 . The semiconductor ZnAl 2 O 4 was synthesized by chemical route and characterized by X-ray diffraction, scanning electron microscopy and optical analysis. The capacitance potential (C −2 -E) measurements showed that the oxide exhibit n-type conduction, supported by a negative thermopower. The degradation of TC was performed by combined adsorption/photocatalysis processes. The result showed that 30 min of contact time was sufficient to reach 42% of the adsorption capacity; the photodegradation rate of TC was evaluated on ZnAl 2 O 4 under optimal operating parameters pH ~ 4.4, catalyst dose (1 g/L), and initial TC concentration (20 mg/L). The kinetic shows that the TC disappears almost completely (92%) and follows a second order model with a half photocatalytic lifetime of 21 min for a TC concentration of 20 mg/L. The mechanism of the antibiotic tetracycline photodegradation on ZnAl 2 O 4 indicated that the O ⋅− 2 radicals and the holes are mainly responsible for the oxidation of TC. The process can be qualified as clean remediation and is a part of a sustainable development perspective.

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Section: Characterization Techniquesmentioning

confidence: 99%

Section: Adsorption and Photocatalytic Processesmentioning

confidence: 99%

Section: Effect Of the Ph Of The Solutionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Kinetic and mechanism studies of tetracycline photodegradation using synthesized ZnAl2O4

Hemmi

Belmedani

Mekatel

et al. 2021

Reac Kinet Mech Cat

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“…However, only a small fraction of tetracycline can be metabolized or adsorbed by humans or animals, 50–80% residuals and metabolites enter into the environment. Thus, tetracycline antibiotics with low biodegradability have been frequently detected in soil and water ( Hou et al, 2020 ; Zhang et al, 2021 ). Tetracycline accumulation in the environment readily leads to cause bacterial resistance to antibiotics, which poses a serious threat to human health and ecological security.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Sepiolite Nanofibers Supported Zero Valent Iron Composite Material for Catalytic Removal of Tetracycline in Aqueous Solution

Han

Zhang

et al. 2021

Front. Chem.

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The heavy use of antibiotics in medicine, stock farming and agriculture production has led to their gradual accumulation in environmental media, which poses a serious threat to ecological environment and human safety. As an efficient and promising catalyst for the degradation of antibiotics, nanoscale zero valent iron (nZVI) has attracted increasing attention in recent years. In this study, sepiolite nanofiber supported zero valent iron (nZVI/SEP) composite was prepared via a facile and environmentally friendly method. The nZVI particles (with size of 20–60 nm) were dispersed evenly on the surface of sepiolite nanofibers, and the catalytic performance for the removal of tetracycline hydrochloride (TC-HCl) in aqueous system was investigated. The effect of nZVI loading amount, catalyst dosage, H2O2 concentration and pH on the removal efficiency of TC-HCl were studied. It was revealed that the sepiolite supporter effectively inhibited the agglomeration of nZVI particles and increased the contact area between contaminant and the active sites, resulting in the higher catalytic performance than pure nZVI material. The TC-HCl removal efficiency of nZVI/SEP composite was up to 92.67% when TC-HCl concentration of 20 mg/L, catalyst dosage of 1.0 g/L, H2O2 concentration of 1.0 mM, pH value of 7. Therefore, the nZVI/SEP composites possess high catalytic activity for TC-HCl removal and have great application prospects in antibiotic wastewater treatment.

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Metal‐Organic Frameworks and Electrospinning: A Happy Marriage for Wastewater Treatment

Ahmadijokani

Molavi

Bahi

et al. 2022

Adv Funct Materials

103

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Metal-organic frameworks (MOFs), an emerging class of porous organic-inorganic hybrid materials, have shown great potential for water and wastewater treatment applications. However, pure MOF powders have limited practical applications in water treatment due to their insolubility, poor processability, brittleness, safety hazard from dust formation, and difficult separation from aqueous solutions. Thus, exploring potential MOFs composites with improved separation performance is of great importance. The marriage of MOFs with electrospun nanofiber with forethought into the final product's morphology, structure, and chemistry has opened up new opportunities for efficient wastewater treatment. The present review exhaustively summarizes the strategies to integrate MOFs into nanofibers via electrospinning to remove various pollutants (i.e., organic dyes, heavy metal ions, pharmaceuticals, personal care products, oily compounds, organic solvents, etc.) via adsorption, photodegradation, and membrane filtration. Besides, the most recent advances of electrospun MOF nanofibers for wastewater treatment and their current challenges and future outlook are delineated.

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Removal of antibiotic tetracycline by metal-organic framework MIL-101(Cr) loaded nano zero-valent iron

Cited by 54 publications

References 62 publications

Kinetic and mechanism studies of tetracycline photodegradation using synthesized ZnAl2O4

Kinetic and mechanism studies of tetracycline photodegradation using synthesized ZnAl2O4

Preparation of Sepiolite Nanofibers Supported Zero Valent Iron Composite Material for Catalytic Removal of Tetracycline in Aqueous Solution

Metal‐Organic Frameworks and Electrospinning: A Happy Marriage for Wastewater Treatment

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