Mechanisms of ciprofloxacin removal by nano-sized magnetite

Rakshit, Sudipta; Sarkar, Dibyendu; Elzinga, Evert J.; Punamiya, Pravin; Datta, Rupali

doi:10.1016/j.jhazmat.2012.12.032

Cited by 178 publications

(69 citation statements)

References 46 publications

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“…Concentrations of CIPRO in wastewater effluents and surface water were observed to range from ng to mg l -1 , with measured concentration near drug manufacturing plants as high as 50 mg l -1 (i.e. 0.15 mM) (Rakshit et al, 2013). CIPRO has a molecular weight of 331.4 g mol -1…”

Section: Introductionmentioning

confidence: 99%

“…It is used to fight against human and veterinary diseases as well as to treat different types of bacterial infections (Vasconcelos et al, 2009;Jiang et al, 2012;Jiang et al, 2013a;Rakshit et al, 2013;Zaviska et al, 2013;Zhou and Jiang, 2015). This antibiotic acts by inhibiting essential enzyme function for DNA production (Le-Minh et al, 2010); it has been identified among the top ten of high priority pharmaceuticals associated to the water cycle in general and as a key priority substance for an EU project on the elimination of pharmaceutical residues from point sources in the healthcare sector (Jiang et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

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Investigation of ciprofloxacin removal from aqueous solution by nanofiltration process

2016

Global NEST Journal

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This study investigated the removal of ciprofloxacin (CIPRO) from aqueous solution at a concentration of 10 mg l -1 and the permeate flux behavior during dead-end stirred-cell filtration system using six type of commercially available loose and tight NF membranes (NP010, NP030, NF90, NF270, CK3001 and DS-5DK). The rejection of CIPRO and permeate flux value were evaluated according to the effects of different parameters such as volume reduction factor (VRF), membrane type, transmembrane pressure (TMP) and pH. Contact angle and SEM measurements were also performed for the analysis of the pollution occurring in the pores and on the surfaces of the membranes. Filtration experiments for all membranes used indicated that the flux reached the steady state at VRF 3. CIPRO rejection was found to vary especially with both pH and membrane tightness. Despite the fact that, the loose NF membranes showed poor and variable CIPRO removal, the highest rejection was obtained with NF90 tight membrane at the original pH value (pH 5.65) and 10 bar of applied pressure. NF90 membrane achieved 98.3% TOC, 98.9% COD, 96.9% TDS and 95.7% Ec rejections at 24.39 l m -2 h -1 permeate flux at the predefined operating conditions.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Investigation of ciprofloxacin removal from aqueous solution by nanofiltration process

2016

Global NEST Journal

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“…40 Tang et al suggested that CIP adsorption on reduced graphene oxide (Fe 3 O 4 ) was relatively high at pH 5.0-7.0, and the dominant mechanisms in the sorption were π-π electron interaction and electrostatic repulsions. 41 Although the present study did not investigate the adsorption mechanism of CIP on maghemite or hematite, we hypothesize that CIP could interact with iron oxide NPs during the polymer encapsulation process and/or partial PCL degradation and may alter the antibacterial property of CIP toward S. aureus.…”

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confidence: 99%

Magnetically stimulated ciprofloxacin release from polymeric microspheres entrapping iron oxide nanoparticles

Sirivisoot¹,

Harrison²

2015

IJN

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To extend the external control capability of drug release, iron oxide nanoparticles (NPs) encapsulated into polymeric microspheres were used as magnetic media to stimulate drug release using an alternating magnetic field. Chemically synthesized iron oxide NPs, maghemite or hematite, and the antibiotic ciprofloxacin were encapsulated together within polycaprolactone microspheres. The polycaprolactone microspheres entrapping ciprofloxacin and magnetic NPs could be triggered for immediate drug release by magnetic stimulation at a maximum value of 40%. Moreover, the microspheres were cytocompatible with fibroblasts in vitro with a cell viability percentage of more than 100% relative to a nontreated control after 24 hours of culture. Macrophage cell cultures showed no signs of increased inflammatory responses after in vitro incubation for 56 hours. Treatment of Staphylococcus aureus with the magnetic microspheres under an alternating (isolating) magnetic field increased bacterial inhibition further after 2 days and 5 days in a broth inhibition assay. The findings of the present study indicate that iron oxide NPs, maghemite and hematite, can be used as media for stimulation by an external magnetic energy to activate immediate drug release.

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“…In the literature, several studies related to the adsorption of CIP to natural materials or components of natural materials have been published (activated carbon [15], activated charcoal and talc [16], date palm leaflets [17], montmorillonite [18], soil [19,20,21], dioctahedral clay minerals [22]; kaolinite [23]; modified coal fly ash [24]; aerobically digested biosolid [25], sawdust [26], birnessite, a layered manganese oxide [27], (Fe 3 O 4 /C) a new magnetic mesoporous carbon composite [28], Chitosan-Zn (II), Chitosan-Fe (III), Chitosan-Fe(II) microparticles [29], aluminum and hydrous oxides [30], andnano-sized magnetite [31]). …”

Section: Introductionmentioning

confidence: 99%

Removal of Ciprofloxacin Hydrochloride from Aqueous Solution by Pomegranate Peel Grown in Alziedab Agricultural Scheme - River Nile State, Sudan

Elhussien¹

2017

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Abstract:Removal of Ciprofloxacin (CIP) antibiotic from aqueous solution onto Activated carbon derived from pomegranate peel wastes collected from Alziedab Agricultural Scheme at River Nile state, Sudan as a novel precursorby chemical activation with Potassium Hydroxide (KOH), at specific condition of carbonization temperature at 500°C and 1 hour as a holding time and detonated as (AC(PPZS)KOH. The obtained material was submitted to measurements of active surface area, Fourier Transform Infrared Spectroscopy (FTIR) analysis and scanning electron microscope (SEM). Batch-adsorption studied had been carried out to examine the adsorption capacity of the AC(PPZS)KOH for the removal of Ciprofloxacin from aqueous solution. The effect of various process parameters like pH, initial antibiotic concentration, adsorbent dose, and contact time, on the efficiency of Ciprofloxacin removal was investigated. Maximum adsorption of Ciprofloxacin on AC(PPZS)KOH, (86.4 ± 5.7%) was observed at pH 8. The optimum adsorbent dose was determined as 0.05 g at 25°C. Initial Ciprofloxacin concentrations has important effect on AC(PPZS)KOH in the studied range (50-300 mg/L) where the removal percentage increases as the antibiotic concentration decrease. The adsorption equilibrium data was well explained by Freundlich isotherm. The results reveal the Langmuir model is not able to describe the experimental data properly, poor less of fitting on AC(PPZS)KOH. The Freundlich isotherm experimental data obtained showed (Correlation Coefficient, R 2 = 0.991) higher than Langmuir isotherm, R 2 = 0.919). The porous characteristics and adsorption efficiencies of prepared AC(PPZS)KOH were also investigated.

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Mechanisms of ciprofloxacin removal by nano-sized magnetite

Cited by 178 publications

References 46 publications

Investigation of ciprofloxacin removal from aqueous solution by nanofiltration process

Investigation of ciprofloxacin removal from aqueous solution by nanofiltration process

Magnetically stimulated ciprofloxacin release from polymeric microspheres entrapping iron oxide nanoparticles

Removal of Ciprofloxacin Hydrochloride from Aqueous Solution by Pomegranate Peel Grown in Alziedab Agricultural Scheme - River Nile State, Sudan

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Mechanisms of ciprofloxacin removal by nano-sized magnetite

Cited by 178 publications

References 46 publications

Investigation of ciprofloxacin removal from aqueous solution by nanofiltration process

Investigation of ciprofloxacin removal from aqueous solution by nanofiltration process

Magnetically stimulated ciprofloxacin release from&nbsp;polymeric microspheres entrapping iron oxide nanoparticles

Removal of Ciprofloxacin Hydrochloride from Aqueous Solution by Pomegranate Peel Grown in Alziedab Agricultural Scheme - River Nile State, Sudan

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Magnetically stimulated ciprofloxacin release from polymeric microspheres entrapping iron oxide nanoparticles