Adsorption and breakdown of penicillin antibiotic in the presence of titanium oxide nanoparticles in water

Peterson, Jonathan W.; Petrasky, Laura; Seymour, Michael D.; Burkhart, Rachel S.; Schuiling, Amanda B.

doi:10.1016/j.chemosphere.2012.01.044

Cited by 102 publications

(46 citation statements)

References 33 publications

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“…Penicillin G removal was associated with the available concentration of the catalyst in the solution and antibiotic removal increased linearly with an increase in the catalyst concentration. Similar results were also obtained for the removal of penicillin using titanium dioxide nanoparticles [4]. …”

Section: Resultssupporting

confidence: 84%

“…The antibiotic penicillin G is soluble in water and its mechanism of action is the destruction of bacteria’s cell wall by preventing peptidoglycan production [4]. …”

Section: Introductionmentioning

confidence: 99%

“…They concluded that the removal rate of the antibiotic depended on the initial concentration of the amoxicillin and TiO 2 /UV-A catalyst [15]. Peterson’s study observed that nanoparticles of TiO 2 removed significant amount of penicillin from the aqueous phase at acidic pH [4]. …”

Section: Introductionmentioning

confidence: 99%

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Removal of penicillin G from aqueous phase by Fe+3-TiO2/UV-A process

Dehghani

Nasseri

Ahmadi

et al. 2014

J Environ Health Sci Engineer

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BackgroundAnomalous use of antibiotics and their entrance into the environment have increased concerns around the world. These compounds enter the environment through an incomplete metabolism and a considerable amount of them cannot be removed using conventional wastewater treatment. Therefore, the main objectives of this research are evaluation of the feasibility of using ultraviolet radiation (UV-A) and fortified nanoparticles of titanium dioxide (TiO2) doped with Fe+3 to remove penicillin G (PENG) from aqueous phase and determining the optimum conditions for maximum removal efficiency.ResultsThe results showed that the maximum removal rate of penicillin G occurred in acidic pH (pH = 3) in the presence of 90 mg/L Fe+3-TiO2 catalyst. In addition, an increase in pH caused a decrease in penicillin G removal rate. As the initial concentration of penicillin G increased, the removal rate of antibiotic decreased. Moreover, due to the effect of UV on catalyst activation in Fe+3-TiO2/UV-A process, a significant increase was observed in the rate of antibiotic removal. All of the variables in the process had a statistically significant effect (p < 0.001).ConclusionThe findings demonstrated that the antibiotic removal rate increased by decreasing pH and increasing the amount of catalyst and contact time. In conclusion, Fe+3-TiO2/UV-A process is an appropriate method for reducing penicillin G in polluted water resources.

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Section: Resultssupporting

confidence: 84%

“…The antibiotic penicillin G is soluble in water and its mechanism of action is the destruction of bacteria’s cell wall by preventing peptidoglycan production [4]. …”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Removal of penicillin G from aqueous phase by Fe+3-TiO2/UV-A process

Dehghani

Nasseri

Ahmadi

et al. 2014

J Environ Health Sci Engineer

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“…5), and no longer presents the risk of promoting antibiotic resistance among bacteria in the potential receiving water body. Some works have reported the adsorption of penicillin antibiotics on non-illuminated iron and TiO2 nanoparticles and the consequent breakdown of the β-lactamic ring of the original compounds over different pH conditions (Ghauch et al 2009;Peterson et al 2012). However, in the photocatalytic experiments performed in this work, no significant loss of AMX was seen in the period of time between the catalyst addition step and the beginning of the irradiation.…”

Section: Evaluation Of the Amx Mineralizationcontrasting

confidence: 43%

Assessment of solar driven TiO2-assisted photocatalysis efficiency on amoxicillin degradation

Pereira

Reis

Nunes

et al. 2013

Environ Sci Pollut Res

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The objective of this work was to evaluate the efficiency of a solar TiO2-assisted photocatalytic process on amoxicillin (AMX) degradation, an antibiotic widely used in human and veterinary medicine. Firstly, solar photolysis of AMX was compared with solar photocatalysis in a compound parabolic collectors pilot scale photoreactor to assess the amount of accumulated UV energy in the system (QUV) necessary to remove 20 mg L −1 AMX from aqueous solution and mineralize the intermediary byproducts. Another experiment was also carried out to accurately follow the antibacterial activity against Escherichia coli DSM 1103 and Staphylococcus aureus DSM 1104 and mineralization of AMX by tracing the contents of dissolved organic carbon (DOC), low molecular weight carboxylate anions, and inorganic anions. Finally, the influence of individual inorganic ions on AMX photocatalytic degradation efficiency and the involvement of some reactive oxygen species were also assessed. Photolysis was shown to be completely ineffective, while only 3.1 kJUVL −1 was sufficient to fully degrade 20 mg L −1 AMX and remove 61 % of initial DOC content in the presence of the photocatalyst and sunlight. In the experiment with an initial AMX concentration of 2 40 mg L −1 , antibacterial activity of the solution was considerably reduced after elimination of AMX to levels below the respective detection limit. After 11.7 kJUVL −1 , DOC decreased by 71 %; 30 % of the AMX nitrogen was converted into ammonium and all sulfur compounds were converted into sulfate. A large percentage of the remaining DOC was in the form of low molecular weight carboxylic acids. Presence of phosphate ions promoted the removal of AMX from solution, while no sizeable effects on the kinetics were found for other inorganic ions. Although the AMX degradation was mainly attributed to hydroxyl radicals, singlet oxygen also plays an important role in AMX self-photosensitization under UV/ visible solar light.

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“…Photochemical transformation can occur when the TiO 2 itself is subject to UV radiation and can generate free radicals (Brunet et al, 2009) or can change the interaction with adsorbed compounds (i.e., self-cleaning capacity; Carp et al, 2004). This self-cleaning capacity of TiO 2 NMs was also shown for the removal of penicillin antibiotic from water due to absorption and increased degradation (Peterson et al, 2012).…”

Section: Transformationmentioning

confidence: 99%