Adsorption and magnetic solid-phase extraction of NSAIDs from pharmaceutical wastewater using magnetic carbon nanotubes: Effect of sorbent dimensions, magnetite loading and competitive adsorption study

El‐Sheikh, Amjad H.; Qawariq, Rania F; Abdelghani, Jafar I.

doi:10.1016/j.eti.2019.100496

Cited by 42 publications

(12 citation statements)

References 44 publications

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“…Dimension of carbon nanotube can affect to pre-concentration and adsorption performance of the MCNT. Based on that, El-Sheikh et al [42] synthesize the MCNTs with various dimensions of carbon nanotube and various ratios of carbon nanotube and magnetite. In this study, magnetite and carbon nanotube (Mag: CNT) ratios used were 1:2; 1:1; and 2:1.…”

Section: Magnetic Nanoparticle Functionalization With Inorganic Compoundsmentioning

confidence: 99%

“…However, the recovery of NSAIDs for sorbent with the ratio of Mag: CNT were 1:1 and 1:2 have a similar result. To investigate the effect of CNT dimension on adsorption performance, El-Sheikh et al [42] used the CNT with different lengths and diameters, 10-100 nm in diameter and 1-15 µm in length. MCNT with a larger diameter (60-100 nm) results in good adsorption for NSAIDs, while the length of MNCT was an insignificant effect on adsorption NSAIDs [42].…”

Section: Magnetic Nanoparticle Functionalization With Inorganic Compoundsmentioning

confidence: 99%

“…To investigate the effect of CNT dimension on adsorption performance, El-Sheikh et al [42] used the CNT with different lengths and diameters, 10-100 nm in diameter and 1-15 µm in length. MCNT with a larger diameter (60-100 nm) results in good adsorption for NSAIDs, while the length of MNCT was an insignificant effect on adsorption NSAIDs [42]. Li et al [32] synthesis magnetic sorbent for dispersive micro solid-phase extraction with two kinds of CNT, such as magnetic single-walled carbon nanotubes (Mg-SWCNTs) using single-walled carbon nanotubes with 0.7-1.3 nm in diameter and 1 μm in length; and magnetic multi-walled carbon nanotubes (Mg-MWCNTs) using multi-walled carbon nanotubes with 110-170 nm in diameter and 5-9 μm in length.…”

Section: Magnetic Nanoparticle Functionalization With Inorganic Compoundsmentioning

confidence: 99%

See 2 more Smart Citations

Review: Application of Magnetic Solid-Phase Extraction (Mspe) in Various Types of Samples

Holik

2021

Int J App Pharm

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This review aimed to inform about the magnetic nanoparticle functionalization and solid magnetic phase extraction application to separate analytes in various types of samples. The review was conducted by analyzing several articles published in 2010 until 2021 obtained through search engines, such as Science Direct, Google Scholar and PubMed, using the keyword “magnetic phase extraction” and “magnetic nanoparticle”. The magnetic nanoparticle can be functionalized with organic, inorganic, and metal-organic framework compounds to obtain good selectivity and extraction capability. The Magnetic Solid Phase Extraction (MSPE) can be applied to separate analytes in biological, food, environmental samples. The MSPE can be used in various biological, food, and environmental samples resulting in high enrichment factor value, good recovery, and the magnetic adsorbent has excellent reusability.

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Section: Magnetic Nanoparticle Functionalization With Inorganic Compoundsmentioning

confidence: 99%

Section: Magnetic Nanoparticle Functionalization With Inorganic Compoundsmentioning

confidence: 99%

Section: Magnetic Nanoparticle Functionalization With Inorganic Compoundsmentioning

confidence: 99%

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Review: Application of Magnetic Solid-Phase Extraction (Mspe) in Various Types of Samples

Holik

2021

Int J App Pharm

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“…Secondly, the surface of magnetic nanoparticles can be loaded with functional groups through different synthesis methods, such as amino and carboxyl groups and other epoxy groups [ 13 , 14 ], which can be used for protein capture, separation and other processes [ 15 , 16 ]. For example, Alinezhad et al [ 17 ] used magnetic nanoparticles combined with MSPE technology to separate, enrich and detect three kinds of NSAIDs in environmental water samples. The operation was simple, and the analysis time was short, with a recovery rate of 93.6–98.9%.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Phenylboronic Acid-Functionalized Magnetic Nanoparticles for Sensitive Soil Enzyme Assays

Shi

Cai

et al. 2022

Molecules

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Soil enzymes, such as invertase, urease, acidic phosphatase and catalase, play critical roles in soil biochemical reactions and are involved in soil fertility. However, it remains a great challenge to efficiently concentrate soil enzymes and sensitively assess enzyme activity. In this study, we synthesized phenylboronic acid-functionalized magnetic nanoparticles to rapidly capture soil enzymes for sensitive soil enzyme assays. The iron oxide magnetic nanoparticles (MNPs) were firstly prepared by the co-precipitation method and then functionalized by (3-aminopropyl)triethoxysilane, polyethyleneimine and phenylboric acid in turn, obtaining the final nanoparticles (MNPPBA). Protein-capturing assays showed that the functionalized MNPs had a much higher protein-capturing capacity than the naked MNPs (56% versus 6%). Moreover, MNPPBA almost thoroughly captured the tested enzymes, i.e., urease, invertase, and alkaline phosphatase, from enzyme solutions. Based on MNPPBA, a soil enzyme assay method was developed by integration of enzyme capture, magnetic separation and trace enzyme analysis. The method was successfully applied in determining trace enzyme activity in rhizosphere soil. This study provides a strategy to sensitively determine soil enzyme activity for mechanistic investigation of soil fertility and plant–microbiome interaction.

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“…Black carbon was chosen because it is one of the smallest nanosized carbons and, in order to maximize its exposed surface area, it was chosen to deposit it on the outer surfaces of magnetite particles. In contrast, other magnetite-carbon composites using carbon nanotubes (CNTs) [22][23][24] or a char [25] have been synthesized for water treatment applications, but these featured the magnetic particles decorated on top of the carbon surfaces where both carbon and magnetite can participate in sorption processes. The nanosized black carbon spheres might also have their surface area more readily exposed compared to activated carbon where much of the surface area resides in pore structures, which limits sorption rates.…”

Section: Introductionmentioning

confidence: 99%

Facile Synthesis and Reuse of Magnetic Black Carbon Magnetite (BC-Mag) for Fast Carbamazepine Removal from Water

Cai

Larese-Casanova

2020

Nanomaterials

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Magnetic carbonaceous nanomaterials are needed in water treatment applications because they can offer both carbon surfaces for sorption of organic pollutants and ease of material magnetic retrieval for regeneration and reuse. In this study, we employed a facile one-step method to synthesize a black carbon-magnetite composite (BC-Mag) by high-temperature annealing of black carbon and hematite. The nanocomposite was easily dispersed and stable in water owing to the presence of negatively charged oxygen surface functional groups. Sorption kinetics with dissolved carbamazepine showed a rapid initial uptake with equilibrium achieved within only minutes. The sorption extent can be described with the Freundlich model, and surface area normalized sorption affinity was an order of magnitude greater than conventional granular activated carbon. The sorption extent of neutral carbamazepine remained constant between pH 2–10 while surface zeta potential decreased. BC-Mag can be reused for the sorption of carbamazepine up to six times without significant loss of the sorption extent.

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Adsorption and magnetic solid-phase extraction of NSAIDs from pharmaceutical wastewater using magnetic carbon nanotubes: Effect of sorbent dimensions, magnetite loading and competitive adsorption study

Cited by 42 publications

References 44 publications

Review: Application of Magnetic Solid-Phase Extraction (Mspe) in Various Types of Samples

Review: Application of Magnetic Solid-Phase Extraction (Mspe) in Various Types of Samples

Synthesis of Phenylboronic Acid-Functionalized Magnetic Nanoparticles for Sensitive Soil Enzyme Assays

Facile Synthesis and Reuse of Magnetic Black Carbon Magnetite (BC-Mag) for Fast Carbamazepine Removal from Water

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