Graphene oxide for the treatment of ranitidine containing solution: Optimum sorption kinetics by linear and non linear methods and simulation using artificial neural network

Das, Piyali; Das, Papita

doi:10.1016/j.psep.2016.05.018

Cited by 12 publications

(4 citation statements)

References 18 publications

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“…26,28 É um fármaco altamente solúvel (660 mg mL -1 entre pH 1,0 e 7,0) 29 , com massa molar de 350,86 g mol -1 , sendo comumente encontrado em diversos ambientes aquáticos. A ranitidina e seus subprodutos podem vir a causar danos ao meio ambiente 30 .…”

Section: Ranitidinaunclassified

“…Possui dois valores de pKa: 8,2 e 2,7. 33 A ranitidina (Figura 3) pode ser removida através de diversos processos, como TiO2 modificado com oxalato 34 , adsorção usando óxido de grafeno, 30 fotólise UV, sonólise e UV/peroxodissulfato 35 e eletroquímico. 31 Figura 3.…”

Section: Ranitidinaunclassified

“…179 A fotólise da ranitidina pode levar a formação de subprodutos persistentes com toxicidade elevada a serem dispostos no meio ambiente. 30 Durante a irradiação UV, poluentes orgânicos são propensos a sofrer reações de fotohidrólise, foto-eliminação, foto-oxidação e fotorredução. 180 Durante esse processo, a ranitidina em seu estado excitado torna-se susceptível à rápida transformação química pela quebra das ligações C-S e C-N. 35 Durante os processos oxidativos, compostos contendo nitrogênio podem gerar íons amônio e nitrato.…”

Section: Fotóliseunclassified

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Síntese e aplicação de hexacianoferrato de zinco e seus nanocompósitos à base de nanoestruturas de carbono na degradação de contaminantes emergentes

Nossol¹

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This work involves the synthesis and characterization of zinc hexacyanoferrate (HCFZn) and their respective composites, zinc hexacyanoferrate/graphene oxide (HCFZn/OG) and zinc hexacyanoferrate/carbon natotubes (HCFZn/NTC) aiming the application of these materials as photocatalysts in the degradation of paracetamol and ranitidine. The results obtained by X-ray diffraction revealed that all samples have the same rhombohedral crystal structure indexed to the Zn II 3[Fe III (CN)6]2 formula. From the results obtained by IR spectroscopy, the characteristic bands of hexacyanoferrate can be observed in the regions of 2187/2101 cm-1 (νC≡N), 553 cm-1 , (δFe-CN) and 439 cm-1 (δFe-C). In addition, using Raman spectroscopy confirmed the presence of carbon materials, by observation of the characteristic D and G bands. In the images obtained by scanning electron microscopy (SEM) it was possible to observe HCFZn microparticles (~2.0 µm), which decrease in size in the presence of carbon nanomaterials. The degradation of the pollutants was monitored by high performance liquid chromatography, and the pH value and mass of the catalysts were evaluated using a triplicate central point factorial design 2 2 for each compound. The best degradation condition obtained for pure HCFZn led to a degradation of 78% of paracetamol and 66% of ranitidine, employing the mass of 5.0 mg and pH= 6.0. However, for HCFZn/OG and HCFZn/NTC nanocomposites results superior than 90% of degradation for both drugs were achieved under the same conditions, except for HCFZn/NTC in ranitidine degradation, where the lowest pH value (2.0) was the most appropriate condition. The excellent degradation results obtained may originate from the high surface area presented by HCFZn (896 m 2 g-1) and the respective HCFZn/OG (692 m 2 g-1) and HCFZn/NTC (473 m 2 g-1) nanocomposites. The better performance presented by nanocomposites may be due to the high adsorption capacity of the carbon materials and also to an increase of the electronic transfer rate, with consequent favoring of the redox process and higher efficiency in the electron/hole pair separation.

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Section: Ranitidinaunclassified

Section: Fotóliseunclassified

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Síntese e aplicação de hexacianoferrato de zinco e seus nanocompósitos à base de nanoestruturas de carbono na degradação de contaminantes emergentes

Nossol¹

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“…Also, it has been detected at a concentration of 90-160 ng/L in Patancheru, India and 10,000-100,000 ng/L in pharmaceutical manufacturing effluents in several countries 42,43 . Several studies have reported the adsorption of RAN.HCl from aqueous solution on various adsorbents as activated carbon, cellulose, palygorskite clay and graphene oxide [44][45][46] .…”

Section: Pharmaceutical Active Compoundsmentioning

confidence: 99%

Capillary Electrophoresis for Assessing Static Adsorption/Desorption of Pharmaceutically Active Compounds onto/from Transition Metal Oxide Nanoparticles - Central Composite Design of Response Surface Methodology

Morsi¹

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The binding affinity of pharmaceutically active compounds (PACs) onto transition metal oxide nanoparticles (TMONPs) has been investigated through adsorption and desorption processes. This was deemed worthy of scientific investigation to evaluate the potential for TMONPs to act as efficient adsorbents for PACs in environmental water.Response surface methodology has been applied for the separation of PACs by capillary electrophoresis and to investigate chemical desorption parameters. Quadratic and linear regressions were applied to determine peak resolution and migration time. Analytes were separated in the migration order of metformin < phenformin < mexiletine < ranitidine.These PACs hydrochlorides bind onto TMONPs surface through electrostatic interactions and coordination bonding. It appears that the binding isotherm is well predicted by the Freundlich model, and binding kinetics are consistent with the pseudo-second-order model that involves intra-particle diffusion. The % desorption of mexiletine increases from TiO 2 (46.2%) to Co 3 O 4 (63.0%) due to their different surface properties.

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Metal-oxide coated Graphene oxide nano-composite for the treatment of pharmaceutical compound in photocatalytic reactor: Batch, Kinetics and Mathematical Modeling using Response Surface Methodology and Artificial Neural Network

Bhattacharya

Das

Bhowal

et al. 2022

Environ Sci Pollut Res

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Graphene oxide for the treatment of ranitidine containing solution: Optimum sorption kinetics by linear and non linear methods and simulation using artificial neural network

Cited by 12 publications

References 18 publications

Síntese e aplicação de hexacianoferrato de zinco e seus nanocompósitos à base de nanoestruturas de carbono na degradação de contaminantes emergentes

Síntese e aplicação de hexacianoferrato de zinco e seus nanocompósitos à base de nanoestruturas de carbono na degradação de contaminantes emergentes

Capillary Electrophoresis for Assessing Static Adsorption/Desorption of Pharmaceutically Active Compounds onto/from Transition Metal Oxide Nanoparticles - Central Composite Design of Response Surface Methodology

Metal-oxide coated Graphene oxide nano-composite for the treatment of pharmaceutical compound in photocatalytic reactor: Batch, Kinetics and Mathematical Modeling using Response Surface Methodology and Artificial Neural Network

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