Study of the adsorption mechanisms of ciprofloxacin antibiotics onto graphitic ordered mesoporous carbons

Peng, Xiaoming; Hu, Fengping; Hirata, Dai; Xiong, Qing; Xu, Chunhui

doi:10.1016/j.jtice.2016.05.016

Cited by 70 publications

(33 citation statements)

References 48 publications

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“…For boundary conditions t=0 to t and q=0 to qt the integrated form of Eq. (4) leads to: 24 t qt k qe t q e = + 1 2 2 (5) The parameters (K 2 and q e ) obtained from pseudo second-order kinetic model, correlation coefficient (R 2 ) are given in Table 2. The values of K 2 and q e , can also be determined from slope and intercept of t/q t vs. t plot (Figure 2).…”

Section: Resultsmentioning

confidence: 99%

“…4 Exposure to the residues and metabolites of antibiotics may cause a variety of adverse effects in the environment, such as antibiotics resistance of micro-organisms and chronic and acute toxicity for organisms. 5,6 Therefore removal of antibiotics from aqueous effluents has received much attention within environmental research. 7 Antibiotics are among the most widely used pharmaceuticals and, according to the chemical structure of sub-categories, can be divided into beta-lactams, quinolones, tetracyclines, aminoglycosides, macrolides and sulfonamides.…”

Section: Introductionmentioning

confidence: 99%

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Batch Studies on Biosorption of Ciprofloxacin on Freshwater Macro alga Lemna minor

Balarak

Chandrika

2019

IJPI

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Objectives: Ciprofloxacin (CIP) antibiotic adsorption from aqueous solution unto Lemna minor (LM) was studied. The aim of the experiment was to utilize the LM as a cheap alternative adsorbent compared to more expensive and relatively less effective techniques for the removal of CIP from solution. Methods: The experiment was performed using batch adsorption technique. Thermodynamic parameters such as the changes in enthalpy, entropy and Gibbs free energy was determined, showing adsorption to be an endothermic yet spontaneous process. Pseudo-first-order, pseudo-secondorder and intraparticle diffusion models were considered to evaluate the rate parameters. Results: The experimental data fitted the pseudo-secondorder kinetic model, with qe between 4.31 to 19.62 mg/g at concentrations between 10 to 50 mg/L. also due to the inter-particle diffusion, It can be stated that mechanism of the adsorption process is probably a combination of boundary layer and pore diffusion which contribute to the rate determining step. Conclusion: The results indicate that LM biomass could be employed as a low-cost in wastewater treatment for the removal of antibiotics.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Batch Studies on Biosorption of Ciprofloxacin on Freshwater Macro alga Lemna minor

Balarak

Chandrika

2019

IJPI

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“…These effects may be explained by the combination of few factors. Firstly, OMC has high surface area and pore volume that favor the adsorption of RhB through π-π electro-donor-acceptor interaction (EDA), thus increasing the chance of contact with the generated SO 4 − · (Peng et al 2016). Secondly, the oxygen-containing functional groups on OMC surface can serve as the anchoring points and reduce surface energy of CoFe 2 O 4 nanoparticles, which is helpful to their good distribution.…”

Section: Resultsmentioning

confidence: 99%

Synthesis of magnetic CoFe2O4/ordered mesoporous carbon nanocomposites and application in Fenton-like oxidation of rhodamine B

Deng

Chen

Lü

et al. 2017

Environ Sci Pollut Res

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CoFeO/ordered mesoporous carbon (OMC) nanocomposites were synthesized and tested as heterogeneous peroxymonosulfate (PMS) activator for the removal of rhodamine B. Characterization confirmed that CoFeO nanoparticles were tightly bonded to OMC, and the hybrid catalyst possessed high surface area, pore volume, and superparamagnetism. Oxidation experiments demonstrated that CoFeO/OMC nanocomposites displayed favorable catalytic activity in PMS solution and rhodamine B degradation could be well described by pseudo-first-order kinetic model. Sulfate radicals (SO·) were verified as the primary reactive species which was responsible for the decomposition of rhodamine B. The optimum loading ratio of CoFeO and OMC was determined to be 5:1. Under optimum operational condition (catalyst dosage 0.05 g/L, PMS concentration 1.5 mM, pH 7.0, and 25 °C), CoFeO/OMC-activated peroxymonosulfate system could achieve almost complete decolorization of 100 mg/L rhodamine B within 60 min. The enhanced catalytic activity of CoFeO/OMC nanocomposites compared to that of CoFeO nanoparticles could be attributable to the increased adsorption capacity and accelerated redox cycles between Co(III)/Co(II) and Fe(III)/Fe(II).

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“…As a broad-spectrum antibacterial, Ciprofloxacin (CIP) is one of the most frequently detected fluoroquinolone antibiotics which pose a serious threat to the ecosystem and human health by inducing proliferation of bacterial drug resistance 5,6 . Although the CIP concentration in the environment is low, it can induce chronic allergic reactions and antibiotic resistance in bacteria 7 .Antibiotics are potentially unchanged during the activity of conventional wastewater treatment plants [8][9] . These materials enter the surface and underground waters through various means.…”

Section: Introductionmentioning

confidence: 99%

Investigating the Efficiency of Zirconium Oxide Nanoparticles in Removal of Ciprofoxacin from Aqueous Environments

Balarak

Baniasadi

Kethineni

2022

Int J Life Sci Pharm Res

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Antibiotics as emerging contaminants are of global concern due to the development of antibiotic resistant genes potentially causing superbugs. The inefficiency of conventional purification processes in the complete removal of antibiotics increases the resistance of microorganisms in humans and the environment, hence new and low-cost technology is needed. Adsorptive materials have been extensively used for the conditioning, remediation and removal of inorganic and organic hazardous materials. Zirconium oxide is a widely used inorganic material which is chemically stable, non-toxic and not soluble in water. Thus it could be an attractive candidate for drinking water puri? cation. In this study, Zirconium Oxide Nanoparticles (ZrO 2 NP)has been used as the adsorbent for the possibility of removing Cipro? oxacin (CIP) from aqueous solution using the batch adsorption technique under different conditions of initial CIP concentration (25, 50, 75, 100 mg/L), adsorbent dose (0.1, 0.2, 0.3, 0.5, 0.7, 0.9 and 1 g/L) and contact time (10-150 min). The percentage of CIP adsorbed increased with increase in the mass of the adsorbent dose from 0.1 to 1 g/L. Kinetics study for sorption was evaluated using diffusion models, pseudo-first order kinetic and pseudo-second order kinetic. Results show that pseudo second-order kinetic model gave the best description for the adsorption process. The experiments showed that the highest removal rate was 96.5% under optimal conditions. The sorption of CIP on ZrO 2 NP was rapid during the first 30 min and the equilibrium attained within 75 min. The results suggest that ZrO 2 NPcould be a good candidate to remove CIP from wastewater containing different amounts of antibiotic.

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Study of the adsorption mechanisms of ciprofloxacin antibiotics onto graphitic ordered mesoporous carbons

Cited by 70 publications

References 48 publications

Batch Studies on Biosorption of Ciprofloxacin on Freshwater Macro alga Lemna minor

Batch Studies on Biosorption of Ciprofloxacin on Freshwater Macro alga Lemna minor

Synthesis of magnetic CoFe2O4/ordered mesoporous carbon nanocomposites and application in Fenton-like oxidation of rhodamine B

Investigating the Efficiency of Zirconium Oxide Nanoparticles in Removal of Ciprofoxacin from Aqueous Environments

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