Sulfate Radical and Its Application in Decontamination Technologies

Zhang, Bo-Tao; Zhang, Yang; Teng, Yanguo; Fan, Maohong

doi:10.1080/10643389.2014.970681

Cited by 446 publications

(167 citation statements)

References 181 publications

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“…This efficiency in organic compounds degradation is attributed to the sulfate radical generation when persulfate is activated by heat, UV radiation or transition metals, such as iron, and to hydroxyl radical ( • OH, E 0 = 2.7 V) when PS is activated by base (OH − ). Sulfate radical is more selective than hydroxyl radical but is also highly reactive (SO 4 -• , E 0 varies from 2.6 to 3.1 V) to many organic compounds (Zhang et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

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: Introductionmentioning

confidence: 99%

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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“…Peroxymonosulfate (PMS) is a monosubstituted derivative of hydrogen peroxide by a sulfo moiety. The structure of the PMS anion is HOOSO 3 – , with bond lengths of the three terminal S–O bonds and one internal S–O bond similar to those in S 2 O 8 2– and the O–O (peroxo) bond length similar to that in H 2 O 2 based on X‐ray analyses . PMS has been mostly used as a disinfectant, such as the essential ingredient of Virkon and a chlorine‐free additive in swimming pools for the disinfection .…”

Section: Introductionmentioning

confidence: 98%

Fast determination of peroxymonosulfate by flow injection chemiluminescence using the Tb(III) ligand in micelle medium

et al. 2019

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Based on the chemiluminescence (CL) phenomenon of peroxymonosulfate (PMS) and Tb(III) enhanced by its ligand in a micelle microenvironment, a fast and sensitive flow injection CL method for PMS detection was proposed and applied to the analysis of different samples and PMS decomposition. Under the optimized conditions, a linear range was obtained from 4.0 × 10–6 mol L–1 to 2.0 × 10–4 mol L–1 with a high correlation coefficient (r = 0.9997), detection limit of 5.0 × 10–7 mol L–1 (S/N = 3) and relative standard deviation of 2.4% for 1.0 × 10–5 mol L–1 PMS (n = 9). This was successfully applied to the determination of PMS in Virkon powder, tap water, and swimming pool water samples with satisfactory recoveries from 94.8% to 104.8%. In particular, the analytical frequency could be as fast as five samples per minute because there was no reaction step before analysis and the CL phenomenon was instantaneous. Therefore, this CL method has also been successfully applied to investigate the PMS decomposition profiles in carbon material (carbon nanotubes, carbon nanofibres, activated carbon and graphene oxide) catalysis systems, which followed pseudo‐first‐order kinetics with good correlation coefficients (r > 0.9305). Quenching experiments and electron spin resonance spectra verified that the CL phenomenon was due to the formation of singlet oxygen, and that hydroxyl and sulfate radicals might be important in the generation of singlet oxygen. Tb(III) is the luminescent emitter according to the characteristics emission bands of the fluorescence and CL spectra in different media.

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“…The combined remedy investigated in this work is a single application of ISS using PC, and ISCO using sodium persulfate (Na 2 S 2 O 8 , abbreviated SPS). The anion released when SPS dissolves in water (S 2 O 8 2À , abbreviated PS) can be activated to form the sulfate radical anion (SO 4 À) [12][13][14]. Alkaline activation takes place at a pH above 10.5 (Reaction (3)), and heat activation requires temperatures above 30 C (Reaction (4)) [15,16].…”

Section: Introductionmentioning

confidence: 99%

In situ solidification and in situ chemical oxidation combined in a single application to reduce contaminant mass and leachability in soil

Srivastava

Hudson

Cassidy

2016

Journal of Environmental Chemical Engineering

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Sulfate Radical and Its Application in Decontamination Technologies

Cited by 446 publications

References 181 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

Fast determination of peroxymonosulfate by flow injection chemiluminescence using the Tb(III) ligand in micelle medium

In situ solidification and in situ chemical oxidation combined in a single application to reduce contaminant mass and leachability in soil

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