Structures and mechanisms in clay nanopore trapping of structurally-different fluoroquinolone antimicrobials

Okaikue-Woodi, Fanny E.K.; Kelch, Sabrina E.; Schmidt, Michael P.; Martı́nez, Carmen Enid; Youngman, Randall E.; Aristilde, Ludmilla

doi:10.1016/j.jcis.2017.11.020

Cited by 31 publications

(24 citation statements)

References 53 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Moreover, the conformation of adsorbed PPs is also affected by the amount of PPs adsorbed, especially in the interlayer space (Aristilde, Lanson, & Charlet, 2013;Z. Li, Chang, Jiang, & Jean, 2019;Okaikue-Woodi et al, 2018). The transition from a monolayer adsorption to a bilayer or paraffinic adsorption is for example only possible for high starting concentrations on the one hand, and for high adsorbed amounts on the other hand (McLauchlin & Thomas, 2008;Theng, 1982).…”

Section: Adsorption Of Cationic and Zwitterionic Ppsmentioning

confidence: 99%

Raw and modified clays and clay minerals for the removal of pharmaceutical products from aqueous solutions: State of the art and future perspectives

Thiebault

2019

Critical Reviews in Environmental Science and Technology

View full text Add to dashboard Cite

The occurrence of pharmaceutical products (PPs) within environmental compartments challenges the scientific community and water treatment operators to find suitable and practicable removal solutions. Clay minerals are among the oldest and cheapest adsorbents used for the removal of organic and inorganic pollutants. However, despite their significant adsorption properties, little is known about their potential to remove organic contaminants such as pharmaceutical products from wastewater effluents. Hence, based on the latest published articles this review aims to standardize the adsorption properties of clay minerals for the removal of PPs. Specifically, the charge state of PPs appears to play a key role in their adsorption mechanism. In order to overcome the limitations of batch experiments (i.e. idealized solutions, static conditions) and design of a field solution, the impact of external parameters on the adsorption capacities of clay minerals is reviewed. The effect of thermal treatment and acid activation of clay minerals is also assessed in order to better understand the consequences of such modifications on the adsorption properties of clay-based adsorbents. Finally, even if most authors agree on the potential of clay-based adsorbents for the removal of PPs from wastewater, there remain significant gaps in the existing literature that need to be filled, with the aim of forecasting the real potential of clay-based treatment for the removal of pharmaceutical products at industrial scale.

show abstract

Section: Adsorption Of Cationic and Zwitterionic Ppsmentioning

confidence: 99%

Raw and modified clays and clay minerals for the removal of pharmaceutical products from aqueous solutions: State of the art and future perspectives

Thiebault

2019

Critical Reviews in Environmental Science and Technology

View full text Add to dashboard Cite

show abstract

“…FQs are very potent antimicrobial agents against Gram‐negative bacteria, including E. coli . The growth inhibition of E. coli could affect the antimicrobial activity of antibiotics such as OFX .…”

Section: Resultsmentioning

confidence: 99%

“…FQs are very potent antimicrobial agents against Gram-negative bacteria, including E. coli. 1,39 The growth inhibition of E. coli could affect the antimicrobial activity of antibiotics such as OFX. 10,11,30 Figure 8 shows the growth inhibition data corresponding to the concentration data in Fig.…”

Section: Antimicrobial Activitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…Fluoroquinolone (FQ) antimicrobials are widely used to prevent and treat bacterial infections in humans and animals as well as to promote growth in livestock and aquaculture. 1,2 However, their use and subsequent discharge into the environment may be a risk to aquatic and terrestrial organisms because of their high chemical stability, low biodegradability and the evolution of resistant microorganisms. 3 For example, ofloxacin (OFX) is a frequently detected FQ antibiotic in various environmental samples such as wastewater treatment plant effluents, sea waters and surface waters in concentrations ranging from ng L −1 to μg L −1 .…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Co₃(PO₄)₂/Ag₃PO₄ with enhanced simulated sunlight photocatalytic activity toward ofloxacin degradation and mechanism insight

Geng

Yang

et al. 2019

J of Chemical Tech & Biotech

View full text Add to dashboard Cite

BACKGROUND Ofloxacin is a frequently detected fluoroquinolone antibiotic in wastewater treatment plant effluents, sea waters and surface waters. Photocatalytic technology is considered to be the most promising treatment technology for the removal of ofloxacin. However, it is a big challenge to exploit a novel sunlight‐driven photocatalyst and reveal the mechanism of ofloxacin degradation. RESULTS Co3(PO4)2/Ag3PO4 composites were prepared using a facile hydrothermal synthesis method. The structural, morphological and optical properties of the composites were well characterized. Both the degradation efficiency and cyclical stability of the Co3(PO4)2/Ag3PO4 composites increased significantly under simulated sunlight irradiation when ofloxacin (OFX) or methyl orange (MO) was used as the target molecule, as compared with single‐phase Ag3PO4 and Co3(PO4)2. The reduction of antimicrobial activity for 8%Co3(PO4)2/Ag3PO4 reached 88.8% after 5 min of sunlight irradiation. CONCLUSION Co3(PO4)2 played a critical role in suppressing carrier recombination and provided a large number of photogenerated holes and •O2− to oxidize OFX or MO. The OFX degradation mechanism included piperazinyl dealkylation, decarboxylation and defluorination. The reduction of antimicrobial activity for degradation byproducts was obvious after simulated sunlight irradiation over Co3(PO4)2/Ag3PO4. Therefore Co3(PO4)2/Ag3PO4 is an attractive candidate for the removal of OFX. © 2019 Society of Chemical Industry

show abstract

Evaluation of factors affecting tetracycline and diclofenac adsorption by agricultural soils using response surface methodology

Güler

Tunçel

Erşan

2022

Env Prog and Sustain Energy

View full text Add to dashboard Cite

The adsorption process of the pharmaceutical pollutant in the soil is affected by its physicochemical properties and soil properties. In this study, the factors affecting the adsorption of tetracycline and diclofenac onto two different soils (S and M) were investigated using response surface methodology (RSM). The RSM design was used to optimize the five variable factors (pH (2–10), contact time (5–180 min), soil amount (1–10 g/L), temperature (25–45°C)) on the adsorption of tetracycline and diclofenac. The predicted optimal conditions obtained by RSM showed that pH was the most important variable affecting the adsorption of tetracycline and diclofenac. The optimum pH for the adsorption of tetracycline and diclofenac onto the soil samples S and M were found to be 4 and 2, respectively. The adsorbed amounts of tetracycline and diclofenac onto the soils S and M were calculated to be 14.82 mg/g, 12.43 mg/g, 189.40 mg/g, and 144.81 mg/g, respectively. In addition, the effects of soil organic matter, salt, and divalent cations on the adsorption of tetracycline and diclofenac onto soils were studied. The removal of soil organic matter slightly increased tetracycline adsorption, while inhibiting diclofenac adsorption. The presence of salt and divalent cations prominently suppressed the adsorption of tetracycline and diclofenac onto soils. A possible complex mechanism was proposed for TC and DCF adsorption, including ion exchange, electrostatic interaction, and some chemical bonds.

show abstract

Structures and mechanisms in clay nanopore trapping of structurally-different fluoroquinolone antimicrobials

Cited by 31 publications

References 53 publications

Raw and modified clays and clay minerals for the removal of pharmaceutical products from aqueous solutions: State of the art and future perspectives

Raw and modified clays and clay minerals for the removal of pharmaceutical products from aqueous solutions: State of the art and future perspectives

Co₃(PO₄)₂/Ag₃PO₄ with enhanced simulated sunlight photocatalytic activity toward ofloxacin degradation and mechanism insight

Evaluation of factors affecting tetracycline and diclofenac adsorption by agricultural soils using response surface methodology

Contact Info

Product

Resources

About

Structures and mechanisms in clay nanopore trapping of structurally-different fluoroquinolone antimicrobials

Cited by 31 publications

References 53 publications

Raw and modified clays and clay minerals for the removal of pharmaceutical products from aqueous solutions: State of the art and future perspectives

Raw and modified clays and clay minerals for the removal of pharmaceutical products from aqueous solutions: State of the art and future perspectives

Co3(PO4)2/Ag3PO4 with enhanced simulated sunlight photocatalytic activity toward ofloxacin degradation and mechanism insight

Evaluation of factors affecting tetracycline and diclofenac adsorption by agricultural soils using response surface methodology

Contact Info

Product

Resources

About

Co₃(PO₄)₂/Ag₃PO₄ with enhanced simulated sunlight photocatalytic activity toward ofloxacin degradation and mechanism insight