Kinetic and mechanistic investigations of the degradation of sulfamethazine in heat-activated persulfate oxidation process

Fan, Yan; Ji, Yuefei; Kong, Deyang; Lu, Junhe; Zhou, Qunlan

doi:10.1016/j.jhazmat.2015.06.058

Cited by 391 publications

(77 citation statements)

References 51 publications

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“…However, if a negative charge is present in pH 7 and 9, this will certainly reduce the electron-withdrawing effect of sulfonamide group and enhance the reactivity of the thiazole and benzene rings, leading to an increased overall degradation rate. Similar enhanced degradation of sulfamethazine-another sulfonamide compound-at weak basic condition has previously been reported in heat-activated persulfate oxidation by Fan et al (2015).…”

Section: −•supporting

confidence: 81%

“…Thus, we could expect that bicarbonate addition to Milli-Q water experiments should present the same result. The unnoticeable effect on STZ degradation reported here could be resultant from the lower bicarbonate content (33 ppm~2.8 mM) when compared to Fan et al (2015) results.…”

Section: Degradation Of Stz On Stp Effluentcontrasting

confidence: 48%

“…CO 3 •− is more selective than sulfate and hydroxyl radicals but is very reactive toward electron rich organic compounds . Fan et al (2015) evaluated the role of bicarbonate on sulfamethazine degradation by heat-activated persulfate and reported that concentrations ranging from 5 to 50 mM increased the sulfonamide degradation. Thus, we could expect that bicarbonate addition to Milli-Q water experiments should present the same result.…”

Section: Degradation Of Stz On Stp Effluentmentioning

confidence: 99%

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Evaluation of sulfathiazole degradation by persulfate in Milli-Q water and in effluent of a sewage treatment plant

Velosa

Nascimento

2016

Environ Sci Pollut Res

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The presence of antibiotics and their metabolites in natural waters has raised some concern among scientists around the world because it can lead to bacterial resistance and other unknown consequences to mankind and wildlife. Persulfate (PS)-driven oxidation is a new technology that has been used successfully to remediate contaminated sites, but its use to treat wastewater, especially sewage treatment plant (STP) effluent, is still scarce. This paper describes the effect of several persulfate activation methods for degrading sulfathiazole (STZ) in Milli-Q water and in STP effluent. Some parameters, such as pH, persulfate concentration, presence of Mn, Zn, Cu, Fe, and Fe, as well as copper and iron organic complexes, were studied in STZ degradation. Raising the pH from 5 to 9, as well as the persulfate concentration, resulted in increased STZ degradation. Among the transition metals evaluated, only Fe and Cu were able to activate persulfate molecules. Copper was a better activator than iron since its effect lasts longer. Citrate was the best ligand evaluated increasing Fe(II) activation capacity at pH 7. Hydroxylamine addition to Fe(II) on persulfate system extended the Fe(II) effect. The presence of bicarbonate or humic acid did not affect PS-driven degradation of STZ. Finally, the degradation of STZ in STP effluent promoted by PS-driven oxidation (25 °C) was as fast as in Milli-Q water, proving to be successful.

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Section: −•supporting

confidence: 81%

Section: Degradation Of Stz On Stp Effluentcontrasting

confidence: 48%

Section: Degradation Of Stz On Stp Effluentmentioning

confidence: 99%

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Evaluation of sulfathiazole degradation by persulfate in Milli-Q water and in effluent of a sewage treatment plant

Velosa

Nascimento

2016

Environ Sci Pollut Res

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“…Solution pH plays a complex role in the TAP oxidation of contaminants . The effect of solution pH on SA oxidation was investigated under different pH conditions, namely pH 3, 5, 7, 9 and 11, by conducting a series of experiments (conditions: [SA] 0 = 50 mg L −1 , [PS] 0 = 20 mmol L −1 , T = 60 °C).…”

Section: Resultsmentioning

confidence: 99%

Removal of sulfanilic acid from wastewater by thermally activated persulfate process: oxidation performance and kinetic modeling

Zhou

et al. 2019

J of Chemical Tech & Biotech

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BACKGROUND Sulfanilic acid (SA) is a highly typical representative sulfonated aromatic amine widely occurring in chemical and pharmaceutical wastewaters. Its release poses potential threats to the environment and human health. Thermally activated persulfate (TAP) is a promising technology for organic matter removal. In this study, TAP is evaluated using the oxidation of SA as a model reaction. RESULTS The oxidation performance of TAP on SA removal was investigated initially under different conditions of temperature, solution pH, persulfate dosage and initial SA concentration. Results showed that SA removal was effectively initiated by the TAP process and fitted well with a pseudo‐first‐order reaction model under all environmental conditions in water, and the yield of relatively low activation energy was 80.8 kJ mol−1 under the optimum conditions. The solution pH exerted almost no influence on SA removal. Sulfate radicals (SnormalO4•−) and hydroxyl radicals (HO•) were identified as major predominant free radicals by the electron paramagnetic resonance (EPR) spectrum and scavenger tests for removing SA during the TAP process. Non‐target natural water constituents can affect the removal rate of SA, such as the chloride ion (Cl−) and the bicarbonate ion (normalHCO3−) promote whereas humic acid (HA) reduces the removal. The total organic carbon (TOC) monitoring results indicated that SA was almost completely mineralized into CO2 and H2O during the 9 h reaction time. CONCLUSION Owing to the generation of highly reactive oxidizing species (SnormalO4•− and HO•), TAP oxidation as an environmentally friendly technology is a favorable option for SA‐containing wastewater treatment usage. © 2019 Society of Chemical Industry

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“…(+) and (−) represent an increase or a decrease in the degradation rate constant of the oxidation reaction, respectively.FamilyProbeStructurePS system used[PS] 0 mM[Cl − ] (mM)[NaCl] (mg L −1 )Effect on k obs Main reactive radical speciesReferenceAntibioticFlorfenicolUV/PS11, 10, 10058.4, 584, 5844–No data[3]SulfamethazineHeat/PS25, 10292, 584Negligible effect

S O_{4}^{• -}

[4]100, 2005844, 11688+Penicillin GHeat/PS0.50.17110–

S O_{4}^{• -}

[5]0.09435.51–AntipyreticAcetaminophenFe 2+ /PS0.80.15.84Negligible effect

S O_{4}^{• -}

[6]2116.9–5, 10292, 584+UV/PS0.1322, 10, 20117, 584, 1169+

S O_{4}^{• -}

[7]50, 1002922, 5844–AntipyrineHeat/PS1.85518.51081+

S O_{4}^{• -}

[8]…”

Section: Datamentioning

confidence: 99%

Data for persulfate activation by UV light to degrade theophylline in a water effluent

et al. 2019

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The aim of this study was to degrade theophylline (TP) drug in a pharmaceutical effluent solution utilizing persulfate (PS). A simulated and a real effluent solution were used, with different conditions tested to optimize the degradation process. HPLC analyses and a modified-HPLC method were used to track concentrations of TP and PS respectively in the treatment process. Experiments were done in triplicates and treated data is presented as graphs. A detailed analyses of this study can be found in the article “Degradation of theophylline in a UV254/PS system: matrix effect and application to a factory effluent” [1] published in Chemical Engineering Journal.

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Kinetic and mechanistic investigations of the degradation of sulfamethazine in heat-activated persulfate oxidation process

Cited by 391 publications

References 51 publications

Evaluation of sulfathiazole degradation by persulfate in Milli-Q water and in effluent of a sewage treatment plant

Evaluation of sulfathiazole degradation by persulfate in Milli-Q water and in effluent of a sewage treatment plant

Removal of sulfanilic acid from wastewater by thermally activated persulfate process: oxidation performance and kinetic modeling

Data for persulfate activation by UV light to degrade theophylline in a water effluent

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