Individual and simultaneous degradation of sulfamethoxazole and trimethoprim by ozone, ozone/hydrogen peroxide and ozone/persulfate processes: A comparative study

Adil, Sawaira; Maryam, Bareera; Kim, Eunju; Dulova, Niina

doi:10.1016/j.envres.2020.109889

Cited by 63 publications

(14 citation statements)

References 62 publications

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“…For SDZ, the k values in ozone, UV/ozone, ozone/PS and UV/ozone/PS systems were 0.0144; 0.0195; 0.0156 and 0.0902 min À1 , respectively; for SMR they were 0.0101; 0.0130; 0.0129 and 0.0837 min À1 , respectively; and for SMZ, they were 0.0058; 0.0101; 0.0069 and 0.0802 min À1 , respectively. Various studies have also shown that the degradation rates of antibiotics fit pseudo-first-order kinetics (Adil et al 2020;Zhang et al 2020). Ozone oxidizes organics by two possible degradation routes: (i) at basic pH, it rapidly decomposes to HO• and other radicals in solution, according to Equation (1), and (ii) at acidic pH, it is stable and reacts directly with organics.…”

Section: Resultsmentioning

confidence: 99%

“…pH 5. Adil et al (2020) found that the mineralization efficiency of trimethoprim increased with the pH in ozone and ozone/PS systems; however, that of sulfamethoxazole decreased. The present research suggests that the effects of pH on the mineralization of sulfonamide by AOPs varied with the species of oxidant and sulfonamide.…”

Section: Effects Of Ph and Salinity On Smz Mineralizationmentioning

confidence: 96%

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Mineralization of sulfonamides from wastewater using ozone-based systems

Ho¹,

Wu²,

Han³

et al. 2021

Water Science and Technology

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Ozone, UV/ozone, ozone/persulfate (PS) and UV/ozone/PS systems were used to mineralize sulfonamides. Sulfadiazine (SDZ), sulfamerazine (SMR) and sulfamethazine (SMZ) were the target compounds. The novel contribution of this study is its determination of the effects of PS addition, sulfonamide structure, pH and salinity on sulfonamide mineralization in ozone-based systems. The mineralization rate of sulfonamides satisfied pseudo-first-order kinetics. The SMZ mineralization rate constant in ozone, UV/ozone, ozone/PS and UV/ozone/PS systems at pH 5 were 0.0058; 0.0101; 0.0069 and 0.0802 min−1, respectively, and those at pH 7 were 0.0075; 0.0116; 0.0083 and 0.0873 min−1, respectively. The increase in the number of methyl-substituents in the heterocyclic group of SMZ and the corresponding increase in the steric hindrance of radical addition, reduced mineralization rates below those of SMR and SDZ. The addition of PS promoted sulfonamide mineralization in the ozone-based systems; conversely, salinity inhibited sulfonamide mineralization.

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Section: Resultsmentioning

confidence: 99%

Section: Effects Of Ph and Salinity On Smz Mineralizationmentioning

confidence: 96%

Mineralization of sulfonamides from wastewater using ozone-based systems

Ho¹,

Wu²,

Han³

et al. 2021

Water Science and Technology

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“…A direct comparison of PS-based AOPs and traditional AOPs with regard to performance in treating real wastewaters should enable the articulation of the strengths and weaknesses of PS-based AOPs. However, most of the existing studies comparing PS-based AOPs with traditional AOPs have focused on the kinetics and mechanism of degradation of single target compounds based on experimental studies. ,,,− The reactivity of HO • and SO 4 •– toward single target compounds has also been examined from an atomistic perspective through computational approaches such as density functional theory and high-level quantum chemical methods. − …”

Section: Introductionmentioning

confidence: 99%

Comparative Experimental and Computational Studies of Hydroxyl and Sulfate Radical-Mediated Degradation of Simple and Complex Organic Substrates

Chen

Miller

et al. 2022

Environ. Sci. Technol.

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Persulfate (PS)-based advanced oxidation processes (AOPs) have been promoted as alternatives to H2O2-based AOPs. To gauge the potential of this technology, the PS/Fe(II) and Fenton (H2O2/Fe(II)) processes were comparatively evaluated using formate as a simple target compound and nanofiltration concentrate from a municipal wastewater treatment plant as a complex suite of contaminants with the aid of kinetic modeling. In terms of the short-term rate and extent of mineralization of formate and the nanofiltration concentrate, PS/Fe(II) is less effective due to slow Fe(II)/Fe(III) cycling attributable to the scavenging of superoxide by PS. However, in the concentrate treatment, PS/Fe(II) provided a sustained removal of total organic carbon (TOC), with ∼81% removed after 7 days with SO4 •– consistently produced via homolysis of the long-life PS. In comparison, H2O2/Fe(II) exhibited limited TOC removal over ∼57% after 10 h due to the futile consumption of H2O2 by HO•. PS/Fe(II) also offers better performance at transforming humic-like moieties to more biodegradable compounds as a result of chlorine radicals formed by the reaction of SO4 •– with the matrix constituents present in the concentrate. The application of PS/Fe(II) is, however, subject to the limitations of slow oxidation of organic contaminants, release of sulfate, and formation of chlorinated byproducts.

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“…Several prior studies have focused on the technique of using ozone and hydrogen peroxide for oxidation-reduction to treat diesel contaminants in soil and water [29][30][31][32]. There are diverse studies that report the combination of these two to treat various pollutants [33][34][35], while limited studies are focused on soil and water treatment [36]. Thus, this study was carried out to determine the effectiveness of diesel degradation in soil and groundwater using various proportions of hydrogen peroxide combined with ozone.…”

Section: Introductionmentioning

confidence: 99%

Combined Application of Ozone and Hydrogen Peroxide to Degrade Diesel Contaminants in Soil and Groundwater

Chen

Pokhrel

Wang

et al. 2021

Water

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Environmental pollution has been a major concern in recent times, and soil and groundwater pollution are areas which have received particular focus. This has led to the development of various remediation techniques such as excavation, soil vapor extraction, bioremediation, chemical oxidation, and so on. Among all remediation techniques, chemical oxidation has been proven to be the most effective and feasible technique around the world. In this study, various combinations of ozone and hydrogen peroxide were used to treat diesel-contaminated soil and groundwater in an experimental setup. Experimental soil and groundwater were prepared with properties similar to the contaminated soil. An ozone generator and a pump injection system were deployed for combining ozone and hydrogen peroxide. Five different experiment batches were prepared based on the hydrogen peroxide concentration and its ratio to the soil. The diesel concentration in the water dropped from 300 mg/L to 7 mg/L in the first hour of treatment, which dropped below the detection limit (0.01 mg/L) thereafter. Similarly, 63.9% degradation was achieved with the combined sparging of ozone and hydrogen peroxide in the soil. Ozone combined with 7% hydrogen peroxide was the most promising combination for removing the contaminants. In addition, this research explored the hydroxyl radical conversion rate of ozone and the perozone, the difference in order of magnitude is greater than one which shows that the perozone has better oxidation capacity than ozone only. The findings of this study show that combining ozone with hydrogen peroxide is a competent and feasible onsite remediation method for diesel contaminants in soil and groundwater. Thus, this method can be applied in local gas stations, accidental spillage sites, and small-scale refineries for onsite treatment in a cost-effective and technically sound way within a short time span.

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Individual and simultaneous degradation of sulfamethoxazole and trimethoprim by ozone, ozone/hydrogen peroxide and ozone/persulfate processes: A comparative study

Cited by 63 publications

References 62 publications

Mineralization of sulfonamides from wastewater using ozone-based systems

Mineralization of sulfonamides from wastewater using ozone-based systems

Comparative Experimental and Computational Studies of Hydroxyl and Sulfate Radical-Mediated Degradation of Simple and Complex Organic Substrates

Combined Application of Ozone and Hydrogen Peroxide to Degrade Diesel Contaminants in Soil and Groundwater

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