Dialysis experiments for assessing the pH-dependent sorption of sulfonamides to soil clay fractions

Anskjær, Gitte Gotholdt; Krogh, Kristine A.; Halling-Sørensen, Bent

doi:10.1016/j.chemosphere.2013.08.048

Cited by 13 publications

(5 citation statements)

References 36 publications

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“…In summary, and according to Kahle and Stamm (2007), sorption of SDZ depends strongly on i) the soil type (a content of organic material) and ii) the prevailing pH value. Anskjaer et al (2014) observed a general trend of increasing sorption at low pH and decreasing sorption at high pH for clayey sand and silty clay and a wide range of pH values between 4.3 and 7.6. Yang et al (2009) also detected that SDZ degradation did not occur in anoxic or sterile soils, and thus that a higher microbial activity plays a key role in the SDZ degradation since it was observed to be highest in the sandy MRZ soil.…”

Section: Small-scale and Short-term Sorption And Degradation Of Sdzmentioning

confidence: 84%

“…Sorption of SDZ to the soil matrix is not mainly due to hydrophobic partitioning (Tolls, 2001), as it is common for several other organic xenobiotics, but results from other processes such as ion exchange, surface complexation, and hydrogen bonding (Sukul and Spiteller, 2006). Factors other than the soil organic carbon content and hydrophobicity, such as pH and clay content, thus play an important role (Anskjaer et al, 2014;Boxall, 2008). According to the results of Doretto and Rath (2013), the Freundlich isotherm was used to describe the non-linear sorption of SDZ and its transformation products.…”

Section: Numerical Modeling 231 Governing Flow and Transport Equatmentioning

confidence: 99%

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Fate of the antibiotic sulfadiazine in natural soils: Experimental and numerical investigations

Engelhardt

Sittig

Šimůnek

et al. 2015

Journal of Contaminant Hydrology

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Based on small-scale laboratory and field-scale lysimeter experiments, the sorption and biodegradation of sulfonamide sulfadiazine (SDZ) were investigated in unsaturated sandy and silty-clay soils. Sorption and biodegradation were low in the laboratory, while the highest leaching rates were observed when SDZ was mixed with manure. The leaching rate decreased when SDZ was mixed with pure water, and was smallest with the highest SDZ concentrations. In the laboratory, three transformation products (TPs) developed after an initial lag phase. However, the amount of TPs was different for different mixing-scenarios. The TP 2-aminopyrimidine was not observed in the laboratory, but was the most prevalent TP at the field scale. Sorption was within the same range at the laboratory and field scales. However, distinctive differences occurred with respect to biodegradation, which was higher in the field lysimeters than at the laboratory scale. While the silty-clay soil favored sorption of SDZ, the sandy, and thus highly permeable, soil was characterized by short half-lives and thus a quick biodegradation of SDZ. For 2-aminopyrimidine, half-lives of only a few days were observed. Increased field-scale biodegradation in the sandy soil resulted from a higher water and air permeability that enhanced oxygen transport and limited oxygen depletion. Furthermore, low pH was more important than the organic matter and clay content for increasing the biodegradation of SDZ. A numerical analysis of breakthrough curves of bromide, SDZ, and its TPs showed that preferential flow pathways strongly affected the solute transport within shallow parts of the soil profile at the field scale. However, this effect was reduced in deeper parts of the soil profile. Due to high field-scale biodegradation in several layers of both soils, neither SDZ nor 2-aminopyrimidine was detected in the discharge of the lysimeter at a depth of 1 m. Synthetic 50 year long simulations, which considered the application of manure with SDZ for general agricultural practices in Germany and humid climate conditions, showed that the concentration of SDZ decreased below 0.1 μg/L in both soils below the depth of 50 cm.

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Section: Small-scale and Short-term Sorption And Degradation Of Sdzmentioning

confidence: 84%

Section: Numerical Modeling 231 Governing Flow and Transport Equatmentioning

confidence: 99%

Fate of the antibiotic sulfadiazine in natural soils: Experimental and numerical investigations

Engelhardt

Sittig

Šimůnek

et al. 2015

Journal of Contaminant Hydrology

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“…The variation in the values of k with pH was interpreted quantitatively using acid–base equilibrium of Fe VI and SAs. In the pH range of the study, only monoprotonated and unprotonated species of Fe VI and SAs (X) are involved (eqs and ). ,− The dependence of k on the pH can thus be modeled by eq . where [Fe VI ] tot = [HFeO 4 – ] + [FeO 4 2– ]; [X] tot = [HX] + [X – ]; α i and β j represent the species fractions of Fe VI and selected SA, respectively; i and j are each of the species of Fe VI and selected SA, respectively; and k ij is the species-specific second-order rate constant for the reaction between the Fe VI species i and the X species j . Overall, four reactions could possibly contribute to eq .…”

Section: Resultsmentioning

confidence: 99%

Oxidation of Sulfonamide Antibiotics of Six-Membered Heterocyclic Moiety by Ferrate(VI): Kinetics and Mechanistic Insight into SO₂ Extrusion

Feng

Baum

Nesnas

et al. 2019

Environ. Sci. Technol.

101

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This work presents ferrate(VI) (FeVIO4 2–, FeVI) oxidation of a wide range of sulfonamide antibiotics (SAs) containing five- and six-membered heterocyclic moieties (R) in their molecular structures. Kinetics measurements of the reactions between FeVI and SAs at different pH (6.5–10.0) give species-specific second-order rate constants, k 5 and k 6 of the reactions of protonated FeVI (HFeO4 –) and unprotonated FeVI (FeVIO4 2–) with protonated SAs (HX), respectively. The values of k 5 varied from (1.2 ± 0.1) × 103 to (2.2 ± 0.2) × 104 M–1 s–1, while the range of k 6 was from (1.1 ± 0.1) × 102 to (1.0 ± 0.1) × 103 M–1 s–1 for different SAs. The transformation products of reaction between FeVI and sulfadiazine (SDZ, contains a six-membered R) include SO2 extrusion oxidized products (OPs) and aniline hydroxylated products. Comparatively, oxidation of sulfisoxazole (SIZ, a five-membered R) by FeVI has OPs that have no SO2 extrusion in their structures. Density functional theory calculations are performed to demonstrate SO2 extrusion in oxidation of SDZ by FeVI. The detailed mechanisms of oxidation are proposed to describe the differences in the oxidation of six- and five-membered heterocyclic moieties (R) containing SAs (i.e., SDZ versus SIZ) by FeVI.

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“…Although SAs have been the subject of a number of investigations, few of them have been focused on their behaviour and fate in the environment, including soil (Anskjaer et al, 2014;Doretto et al, 2014;Vithanage et al, 2014;Srinivasan et al, 2013;Maszkowska et al, 2013;Lertpaitoonpan et al, 2009;Karcı and Balcıoğlu, 2009). presented in detail the values of main factors influencing the sorption of sulfonamides in various environmental matrices of soil.…”

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confidence: 99%

The sorption of sulfamethazine on soil samples: Isotherms and error analysis

Pavlović

Ćurković

Blažek

et al. 2014

Science of The Total Environment

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In this paper, batch sorption of sulfamethazine on eight soil samples (six from Croatia and two from Bosnia and Hercegovina) with different organic matter contents ranging from 1.52 to 12.8% was investigated. The effects of various parameters such as agitation time, initial concentration, and ionic strength on the sulfamethazine sorption were studied. The experimental data were analysed using a one-parameter model, Linear isotherm, and two two-parameter models, the Freundlich and Dubinin-Radushkevich isotherms. The goodness of fit was measured using the linear regression and the determination coefficient (R(2)) value. Also, the equilibrium data of the two-parameter models were analysed using the residual root mean square error (RMSE), the sum of squares of errors (ERRSQ), and a composite fractional error function (HYBRID). Non-linear regression has better characteristics for analysing experimental data. The obtained sorption coefficients Kd (from 0.25 to 8.10 mL/g) and the Freundlich sorption coefficients KF (from 1.16 to 7.99 (μg/g)(mL/μg)(1/n)) exhibited quite low values, which indicated that sulfamethazine is weakly adsorbed on the evaluated soils, is highly mobile, and has a great potential to penetrate and pollute the ground water. The Dubinin-Radushkevich isotherm was used to estimate the apparent free energy of sorption.

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Dialysis experiments for assessing the pH-dependent sorption of sulfonamides to soil clay fractions

Cited by 13 publications

References 36 publications

Fate of the antibiotic sulfadiazine in natural soils: Experimental and numerical investigations

Fate of the antibiotic sulfadiazine in natural soils: Experimental and numerical investigations

Oxidation of Sulfonamide Antibiotics of Six-Membered Heterocyclic Moiety by Ferrate(VI): Kinetics and Mechanistic Insight into SO₂ Extrusion

The sorption of sulfamethazine on soil samples: Isotherms and error analysis

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Dialysis experiments for assessing the pH-dependent sorption of sulfonamides to soil clay fractions

Cited by 13 publications

References 36 publications

Fate of the antibiotic sulfadiazine in natural soils: Experimental and numerical investigations

Fate of the antibiotic sulfadiazine in natural soils: Experimental and numerical investigations

Oxidation of Sulfonamide Antibiotics of Six-Membered Heterocyclic Moiety by Ferrate(VI): Kinetics and Mechanistic Insight into SO2 Extrusion

The sorption of sulfamethazine on soil samples: Isotherms and error analysis

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Oxidation of Sulfonamide Antibiotics of Six-Membered Heterocyclic Moiety by Ferrate(VI): Kinetics and Mechanistic Insight into SO₂ Extrusion