Influence of light and Fe(III) ions on tetracycline degradation

Smyk, Bogdan; Piotrowicz-Cieślak, Agnieszka I.; Grajek, Hanna; Rydzyński, Dariusz; Margas, M.; Wasilewski, Janusz

doi:10.1016/j.saa.2019.03.031

Cited by 9 publications

(6 citation statements)

References 32 publications

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“…Antibiotics removal from water bodies is highly interesting for many researchers worldwide. Various technologies were adopted to remove TC, including biological, electrochemical, membrane, advanced oxidation process, and adsorption process (Jeong et al, 2010;Cao et al, 2019;Smyk et al, 2019). In comparison with other approaches, adsorption is outstanding for its unique advantages like easy operation, low toxicity, low energy cost, as well as high removal efficiency at low concentrations (Han et al, 2019;Regkouzas and Diamadopoulos, 2019;Shaheen et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Application of Biochar Derived From Pyrolysis of Waste Fiberboard on Tetracycline Adsorption in Aqueous Solution

Gao

Lin

et al. 2020

Front. Chem.

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In this study, biochars derived from waste fiberboard biomass were applied in tetracycline (TC) removal in aqueous solution. Biochar samples were prepared by slow pyrolysis at 300, 500, and 800 • C, and were characterized by ultimate analysis, Fourier transform infrared (FTIR), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), Brunauer-Emmett-Teller (BET), etc. The effects of ionic strength (0-1.0 mol/L of NaCl), initial TC concentration (2.5-60 ppm), biochar dosage (1.5-2.5 g/L), and initial pH (2-10) were systemically determined. The results present that biochar prepared at 800 • C (BC800) generally possesses the highest aromatization degree and surface area with abundant pyridinic N (N-6) and accordingly shows a better removal efficiency (68.6%) than the other two biochar samples. Adsorption isotherm data were better fitted by the Freundlich model (R 2 is 0.94) than the Langmuir model (R 2 is 0.85). Thermodynamic study showed that the adsorption process is endothermic and mainly physical in nature with the values of H 0 being 48.0 kJ/mol, S 0 being 157.1 J/mol/K, and G 0 varying from 1.02 to −2.14 kJ/mol. The graphite-like structure in biochar enables the π-π interactions with a ring structure in the TC molecule, which, together with the N-6 acting as electron donor, is the main driving force of the adsorption process.

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Section: Introductionmentioning

confidence: 99%

Application of Biochar Derived From Pyrolysis of Waste Fiberboard on Tetracycline Adsorption in Aqueous Solution

Gao

Lin

et al. 2020

Front. Chem.

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“…A new band also appeared above the wavelength of 800 nm, which was clearly noticeable on days 7 and 9 at 30 °C. Its presence was ascribed to the fluorescence of C-T complexes of TC with Fe(III)-Cit, which was signalled by Smyk et al [ 36 ]. These complexes should form as the result of electron transfer from the benzene ring onto the quinone ring [ 48 ].…”

Section: Resultsmentioning

confidence: 93%

“…Saghi and Mahanpoor [ 47 ] demonstrated that nanophotocatalytic α-Fe 2 O 3 /12-TSA 7H 2 O accelerated TC degradation compared with pure α-Fe 2 O 3 NPs. In turn, Smyk et al [ 36 ] and Wang et al [ 44 ] showed that the TC degradation was stimulated by light. In order to study the kinetics of TC degradation by Fe(III)-EDTA and Fe(III)-Cit, the reaction rate constants were calculated.…”

Section: Resultsmentioning

confidence: 99%

“…However, their formation requires the presence of a stacking complex formed by a nonoxidized and an oxidized molecule of TC. The presence of this complex is highly likely because the binding of the first Fe(III) ion is followed by TC oxidation and Fe(III) reduction to Fe(II) [ 36 ].…”

Section: Resultsmentioning

confidence: 99%

“…Iron attaches to tetracycline and degrades it. In our earlier studies [ 36 ], we showed that Fe(III) ions attach to the BCD ring and to the A ring of tetracycline, and other divalent compounds such as Mg 2+ [ 37 ] attach to form complexes with tetracycline. Rydzyński et al [ 37 ] showed that tetracycline has a high affinity for divalent metals and readily extracts magnesium even from molecule chlorophyll.…”

Section: Introductionmentioning

confidence: 99%

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Studies on the Efficiency of Iron Release from Fe(III)-EDTA and Fe(III)-Cit and the Suitability of These Compounds for Tetracycline Degradation

et al. 2022

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Iron ions can be used to degrade tetracycline dispersed in nature. Studies of absorption and fluorescence spectra and quantum chemistry calculations showed that iron is more readily released from Fe(III)-citrate than from Fe(III)-EDTA, so Fe(III)-citrate (Fe(III)-Cit) is more suitable for tetracycline (TC) degradation. At 30 °C, a severe degradation of TC by Fe(III)-Cit occurred as early as after 3 days of incubation in the light, and after 5 days in the dark. In contrast, the degradation of TC by Fe(III)-EDTA proceeded very slowly in the dark. By the fifth day of incubation of TC with Fe(III)-Cit in darkness, the concentrations of the former compound dropped by 55% and 75%, at 20 °C and 30 °C, respectively. The decrease in tetracycline concentrations caused by Fe(III)-EDTA in darkness at the same temperatures was only 2% and 6%, respectively. Light increased the degradation rates of TC by Fe(III)-EDTA to 20% and 56% at 20 °C and 30 °C, respectively. The key role of the light in the degradation of tetracycline by Fe(III)-EDTA was thus demonstrated. The TC degradation reaction showed a second-order kinetics. The rate constants of Fe(III)-Cit-induced TC degradation at 20 °C and 30 °C in darkness were k = 4238M−1day−1 and k = 11,330M−1day−1, respectively, while for Fe(III)-EDTA were 55 M−1day−1 and 226 M−1day−1. In light, these constants were k = 15,440M−1day−1 and k = 40,270 M−1day−1 for Fe(III)-Cit and k = 1012 M−1day−1 and 2050 M−1day−1 at 20 °C and 30 °C; respectively. A possible reason for the higher TC degradation rate caused by Fe(III)-Cit can be the result of its lower thermodynamical stability compared with Fe(III)-EDTA, which we confirmed with our quantum chemistry calculations. Two quantum chemistry calculations showed that the iron complex with EDTA is more stable (the free energy of the ensemble is 15.8 kcal/mol lower) than the iron complex with Cit; hence, Fe release from Fe(III)-EDTA is less effective.

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Ag3VO4 anchored ZnTi hydrotalcite microspheres with rosette-like structure for tetracycline degradation

Xiong

Zeng

Chen

et al. 2021

Applied Clay Science

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Influence of light and Fe(III) ions on tetracycline degradation

Cited by 9 publications

References 32 publications

Application of Biochar Derived From Pyrolysis of Waste Fiberboard on Tetracycline Adsorption in Aqueous Solution

Application of Biochar Derived From Pyrolysis of Waste Fiberboard on Tetracycline Adsorption in Aqueous Solution

Studies on the Efficiency of Iron Release from Fe(III)-EDTA and Fe(III)-Cit and the Suitability of These Compounds for Tetracycline Degradation

Ag3VO4 anchored ZnTi hydrotalcite microspheres with rosette-like structure for tetracycline degradation

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