Pharmaceuticals in the Built and Natural Water Environment of the United States

Deo, Randhir P.; Halden, Rolf U.

doi:10.3390/w5031346

Cited by 48 publications

(32 citation statements)

References 114 publications

(141 reference statements)

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“…Moreover, insufficient wastewater treatment and the agricultural use of sewage sludge also are important exposure pathways. Furthermore, in accordance with the review of Deo and Halden (2013), sulfisoxazole (SSX) was detected in raw wastewaters, treated wastewaters at a concentration of nanogram per liter, and in sewage sludge even at a concentration of microgram per kilogram. Taking into consideration the fact that SSX was not detected neither surface waters nor raw and finished drinking waters, this pharmaceutical may reach soil environment.…”

Section: Introductionsupporting

confidence: 67%

Sorption of sulfisoxazole onto soil—an insight into different influencing factors

Maszkowska

Białk‐Bielińska

Mioduszewska

et al. 2015

Environ Sci Pollut Res

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Although sulfonamides (SAs) are among the most commonly used veterinary drugs and their presence in the environment is well documented, knowledge of their fate and behavior in the soil environment is still limited, especially for sulfisoxazole (SSX) which is characterized by the lowest (among other SAs) pK a value associated with acid-base equilibrium of sulfonamide group. Thus, this work was focused on determining the sorption potential of SSX onto natural soils differing in physicochemical properties. All the results were modeled using linear, Freundlich, Langmuir, Dubinin-Radushkevich, and Temkin sorption isotherms. The established sorption coefficients (K(d)) for SSX were quite low (from 0.27 to 0.95 L kg(-1)), which indicated that this substance is highly mobile and has the potential to run off into surface waters and/or infiltrate ground water. The sorption data of SSX is well fitted to the Freundlich isotherm model (R(2) > 0.968). Moreover, we assessed the sorption mechanism of these compounds in the edaphic environment with respect to organic matter (OM) content, pH, and ionic strength. To clarify the current state of knowledge, these factors were examined much more thoroughly than in previous investigations concerning other SAs. The wide range of ionic strength examined showed positive correlation of this factor and sorption of SAs. The results also yielded new insight into dependency of sorption of SAs on organic matter content in soil.

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Section: Introductionsupporting

confidence: 67%

Sorption of sulfisoxazole onto soil—an insight into different influencing factors

Maszkowska

Białk‐Bielińska

Mioduszewska

et al. 2015

Environ Sci Pollut Res

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“…Furthermore, current wastewater becomes more complicated and many coexistent pollutants emerge in water because of the rapid development of modern industry [1,47]. Remediation of complicated wastewater is of great environmental significance [48].…”

Section: Adsorption Behavior Of Cs-go In Binary Pollutant Systemsmentioning

confidence: 99%

pH-tunable surface charge of chitosan/graphene oxide composite adsorbent for efficient removal of multiple pollutants from water

Yan

Yang

et al. 2016

Chemical Engineering Journal

131

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“…[7] The degradation of oxytetracycline in the aquatic environment has been studied by a few researchers. [8,9] Oxytetracycline readily degrades photochemically in distilled water exposed to light. [10] Its degradation has been reported to depend on temperature, pH and presence of organic matter.…”

Section: Introductionmentioning

confidence: 99%

Degradation of oxytetracycline in the aquatic environment: a proposed steady state kinetic model that takes into account hydrolysis, photolysis, microbial degradation and adsorption by colloidal and sediment particles

2015

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Environmental context. Pollution of the aquatic environment by oxytetracycline can lead to microbial resistance thereby compromising the efficacy of current medication regimes. Adsorption by colloidal and sediment particles reduces the rate at which oxytetracycline degrades, whereas the longer the antimicrobial remains in the aquatic environment, the greater the danger of microbial resistance. There is need therefore for a fuller understanding of the kinetics of degradation of oxytetracycline in aquatic ecosystems before measures for mitigating pollution by the antimicrobial can be designed.Abstract. The persistence of oxytetracycline in an aquatic microcosm and distilled water control experiments, was studied over a period of 90 days. An immediate 35 % loss as a result of adsorption by the sediment was observed in the microcosm experiment soon after charging. Subsequently triphasic linear rates of oxytetracycline degradation were observed for both the water phase (3.1 Â 10 À2 , 5.8 Â 10 À3 and 1 Â 10 À3 mg g À1 day À1 ) and sediment phase (4.8 Â 10 À2 , 6.5 Â 10 À3 and 2 Â 10 À4 mg g À1 day À1 ). Degradation is attributed to photolysis and microbial degradation of the free oxytetracycline in solution, and microbial degradation of the colloidal and sediment particle adsorbed speciation forms. The distilled water control exhibited biphasic zero order kinetics attributed to hydrolysis (2 Â 10 À6 mg g À1 day À1 ) and microbial degradation (2.7 Â 10 À3 mg g À1 day À1 ) under dark conditions, and monophasic zero order kinetics attributed to photolysis (6.9 Â 10 À3 mg g À1 day À1 ) under sunlight exposure. A kinetic model that takes into account hydrolysis, photolysis, microbial degradation and adsorption of the antibiotic by colloidal and sediment particles, is presented to account for the monophasic, biphasic and triphasic zero order kinetics observed in the control and microcosm experiments. Possible remediation strategies for mitigating aquatic environments polluted by the antimicrobial are discussed.

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Pharmaceuticals in the Built and Natural Water Environment of the United States

Cited by 48 publications

References 114 publications

Sorption of sulfisoxazole onto soil—an insight into different influencing factors

Sorption of sulfisoxazole onto soil—an insight into different influencing factors

pH-tunable surface charge of chitosan/graphene oxide composite adsorbent for efficient removal of multiple pollutants from water

Degradation of oxytetracycline in the aquatic environment: a proposed steady state kinetic model that takes into account hydrolysis, photolysis, microbial degradation and adsorption by colloidal and sediment particles

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