A review of the adsorption method for norfloxacin reduction from aqueous media

Ohale, Paschal Enyinnaya; Igwegbe, Chinenye Adaobi; Iwuozor, Kingsley O.; Emenike, Ebuka Chizitere; Chiedozie, Christopher; Białowiec, Andrzej

doi:10.1016/j.mex.2023.102180

Cited by 35 publications

(8 citation statements)

References 181 publications

(355 reference statements)

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“…For example, Beigi et al (2023) 54 synthesized a magnetic pectin hydrogel@Fe 3 O 4 -bentonite NC with exceptional adsorption capacities of 909.091 mg/g for crystal violet and 833.333 mg/g for chlorpyrifos (CPF). Ohale et al (2023) 55 highlighted magnesium oxide/chitosan/graphene oxide and graphene oxide/metal organic framework composites with impressive Norfloxacin adsorption capacities of 1114.8 and 1000 mg/g, respectively. Liao and Wang.…”

Section: Resultsmentioning

confidence: 99%

Surface-Functionalized Magnetic Silica-Malachite Tricomposite (Fe–M–Si tricomposite): A Promising Adsorbent for the Removal of Cypermethrin

Ul Ain,

Khan,

Riaz

et al. 2024

ACS Omega

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This study assessed the efficacy of adsorption for eliminating the agricultural pesticide cypermethrin (CP) from wastewater using various adsorbents: silica, malachite, and magnetite. Magnetic nanocomposites (NCs) (with varying amounts of Fe 3 O 4 0.1, 0.25, 0.5, 1.0, and 1.5 wt/wt %) were synthesized, including Fe 3 O 4 nanoparticles (NPs), bicomposites, and tricomposites, calcined at 300 and 500 °C, and then tested for CP removal. The study was conducted in two phases, with the objective of initially assessing how effectively each individual NP performed and then evaluating how effectively the NCs performed when used for the adsorption of CP. Notably, the Fe 3 O 4 −malachite combination exhibited superior CP removal, with the 0.25-Fe−M NC achieving the highest adsorption at 635.4 mg/g. This success was attributed to the large surface area, magnetic properties of Fe 3 O 4 , and adsorption capabilities of malachite. The Brunauer−Emmett−Teller (BET) isotherm analysis indicated that the NCs had potential applications in adsorption and separation processes. The scanning electron microscopy and transmission electron microscopy revealed the spherical, irregular shaped morphology of the synthesized NPs and NCs. However, the X-ray diffraction (XRD) pattern of surface functionalized materials such as surface functionalized malachite [Cu 2 CO 3 (OH) 2 ] with Fe 3 O 4 and SiO 2 may be complicated by the specific functionalization method used and the relative amounts and crystallographic orientations of each component. Therefore, careful interpretation and analysis of the XRD pattern, along with other techniques, are necessary for accurate identification and characterization of the functionalized material. The originality of this study lies in its comprehensive investigation of several adsorbents and NCs for CP removal at neutral pH. The innovation stems from the synergistic action of Fe 3 O 4 and malachite, which results in improved CP removal due to their combined surface properties and magnetic characteristics. The application of magnetic NCs in adsorption and separation, as validated by BET isotherm analysis, highlights the potential breakthrough in addressing pesticide contamination.

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Section: Resultsmentioning

confidence: 99%

Surface-Functionalized Magnetic Silica-Malachite Tricomposite (Fe–M–Si tricomposite): A Promising Adsorbent for the Removal of Cypermethrin

Ul Ain,

Khan,

Riaz

et al. 2024

ACS Omega

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“…The alteration in the type of hydration around the micelles can help explain how the values of CMC change as a result of temperature. 55 Positive Δ H values in an aqueous medium for CFH and CTAB drug surfactant systems were found at 298.15 K temperature. However, it changes to a negative value at 303.15 K and higher, and as the temperature rises, the magnitude of these negative values likewise grows.…”

Section: Effect Of External Parameters On Drugs–surfactants Interactionmentioning

confidence: 96%

A recent overview of surfactant–drug interactions and their importance

Pokhrel

Sah

Gautam³

et al. 2023

RSC Adv.

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“…While there is some indication that the hydrophobic effect and electrostatic interactions play a role, as AC is known to engage with organic compounds through these mechanisms, a more comprehensive understanding of the mechanism can be achieved by modifying the surface chemistry of carbons, preserving their original physical properties, and comparing changes in adsorption affinity before and after modifications (Zhi & Liu, 2015). Several factors are critical in determining the adsorption mechanisms of PFAS by adsorbents, encompassing solution pH, pH of the point of zero charge, zeta potential, acid dissociation constant (pKa) of PFAS, isotherms, and kinetic studies, among others (Emenike, Okoro, et al, 2023; Iwuozor et al, 2023; Ohale et al, 2023). PFAS have very low pKa values (high acid strength) which limit the possibilities for charge neutralization during adsorption.…”

Section: Mechanism Of Adsorption Of Pfas By Modified Acmentioning

confidence: 99%

Modification of activated carbon for enhanced treatment of per‐ and polyfluoroalkyl substances: A focused review

Okorie,

Ojeyemi,

Egbemhenghe

et al. 2024

Remediation Journal

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In response to the growing concern over the contamination of water sources by per‐ and polyfluoroalkyl substances (PFAS), the use of activated carbon (AC) for PFAS removal has garnered significant attention. However, the efficient removal of PFAS with conventional AC poses challenges due to the limited surface area and delayed absorption kinetics. This focused review provides a concise overview of the latest advancements in the modification of AC, a promising strategy for enhancing PFAS adsorption. Chemical and physical modifications, including the deposition of metal/metal oxide nanoparticles, polymer‐based coatings, surfactants, and advanced oxidation processes, were explored, offering insights into their mechanisms and effectiveness. The thorough analysis of these modified AC materials provides a valuable resource for developing efficient and sustainable strategies to address the pressing issue of PFAS contamination in water sources.

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A review of the adsorption method for norfloxacin reduction from aqueous media

Cited by 35 publications

References 181 publications

Surface-Functionalized Magnetic Silica-Malachite Tricomposite (Fe–M–Si tricomposite): A Promising Adsorbent for the Removal of Cypermethrin

Surface-Functionalized Magnetic Silica-Malachite Tricomposite (Fe–M–Si tricomposite): A Promising Adsorbent for the Removal of Cypermethrin

A recent overview of surfactant–drug interactions and their importance

Modification of activated carbon for enhanced treatment of per‐ and polyfluoroalkyl substances: A focused review

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