The synergistic effect of ultrasound power and magnetite incorporation on the sorption/desorption behavior of Cr(VI) and As(V) oxoanions in an aqueous system

Elwakeel, Khalid Z.; Shahat, Ahmed; Al‐Bogami, Abdullah S.; Wijesiri, Buddhi; Goonetilleke, Ashantha

doi:10.1016/j.jcis.2020.02.067

Cited by 75 publications

(21 citation statements)

References 38 publications

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“…Such a treatment can be repeated cyclically in the steps II, III and so on. In this case, W S can be calculated as follows: (6) The integrals in equations 5 and 6 can be solved by interpolating with a polynomial equation, the experimental data Q T and Q T,US vs. t. Table 1 shows that the data of literature are extremely dispersed in order to calculate the specific energy consumption of US, W S (kWh (kg) . Such values are referred to very different processes and are calculated both without considering a scaling-up factor, as previously discussed, and assuming an efficiency of sonochemical apparatus  = 1.…”

Section: Discussion and Resultsmentioning

confidence: 99%

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Basic Economic Analysis for Sonochemical Processes

Pirola

2020

J. Chem. Eng. Res. Updates.

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Ultrasound (US) and other non-traditional energy sources (for instance microwave (MW)) are widely used to increase the rate of chemical reactions, to prepare nanoparticles, to extract natural products etc. In all such cases, the scaling-up of the process must have a defined economic constraint, which generally can be reduced to the evaluation of the parameter RC, which is the ratio between the raw energy cost to produce US (or MW) and the total production cost for unit mass of product. The paper gives a basic correlation among the different parameters to evaluate RC both for processes using only US (or MW and other not traditional sources) and those with mixed energy sources.

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Section: Discussion and Resultsmentioning

confidence: 99%

“…The preparation of innovative heterogeneous catalysts using US in their synthesis procedure have been proposed, for example, for iron based catalysts for Fischer-Tropsch process [4]. US have been also applied to increase the performance of sorptiondesorption processes [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Basic Economic Analysis for Sonochemical Processes

Pirola

2020

J. Chem. Eng. Res. Updates.

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“…A magnetic thiourea-formaldehyde resin was utilized by Goonetilleke et al [115] who formed such a resin in the presence of magnetite (Fe 3 O 4 ) nanoparticles. These could extract chromium (IV) and arsenic (V) oxyanions (CrO 4 2− and AsO 4 3− ) from water with maximum adsorption of 3.76 and 1.63 mmol•g −1 for Cr(IV) and As(V), respectively.…”

Section: Polymer/magnetic Nanomaterials Compositesmentioning

confidence: 99%

Recent Advances in Magnetic Nanoparticles and Nanocomposites for the Remediation of Water Resources

Govan

2020

Magnetochemistry

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Water resources are of extreme importance for both human society and the environment. However, human activity has increasingly resulted in the contamination of these resources with a wide range of materials that can prevent their use. Nanomaterials provide a possible means to reduce this contamination, but their removal from water after use may be difficult. The addition of a magnetic character to nanomaterials makes their retrieval after use much easier. The following review comprises a short survey of the most recent reports in this field. It comprises five sections, an introduction into the theme, reports on single magnetic nanoparticles, magnetic nanocomposites containing two of more nanomaterials, magnetic nanocomposites containing material of a biologic origin and finally, observations about the reported research with a view to future developments. This review should provide a snapshot of developments in what is a vibrant and fast-moving area of research.

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“…[ 11,19,20 ] Moreover, a current strong trend is of continuous interest in the utility of multifunctional compounds fabrication, which provides a variety of characteristics arising from the combination of metal–organic hybrid materials with multifunctional constituents. [ 21,22 ] In fact, the combination of thiourea resulting group with formaldehyde through cross‐linking reaction attracted several studies especially as chelating resins. [ 22 ] Generally speaking, combining magnetite nanoparticles (NPs) with natural or modified biopolymer chains gives rise to novel materials possessing consecutive improvement [ 23,24 ] in electrical, [ 25 ] thermal, [ 26 ] and mechanical [ 23 ] hosting material properties.…”

Section: Introductionmentioning

confidence: 99%

“…[ 21,22 ] In fact, the combination of thiourea resulting group with formaldehyde through cross‐linking reaction attracted several studies especially as chelating resins. [ 22 ] Generally speaking, combining magnetite nanoparticles (NPs) with natural or modified biopolymer chains gives rise to novel materials possessing consecutive improvement [ 23,24 ] in electrical, [ 25 ] thermal, [ 26 ] and mechanical [ 23 ] hosting material properties. Magnetite‐functionalized biopolymers seem to be easily eco‐friendly and recyclable green catalysts in organic compounds synthesis, [ 27–38 ] cancer therapy, [ 39 ] heavy metals removal [ 40–42 ] dyes degradation, [ 12,13,43 ] and epoxidation and oxidation catalytic processes.…”

Section: Introductionmentioning

confidence: 99%

New sonochemical magnetite nanoparticles functionalization approach of dithiooxamide–formaldehyde developed cellulose: From easy synthesis to recyclable 4‐nitrophenol reduction

Mehdaoui

Agren

Dhahri

et al. 2021

Applied Organom Chemis

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Magnetic [FA‐c‐(C‐DTX)@Fe3O4] nanocomposites have been prepared with a four‐step technique involving three mechanical stirring conventional steps to obtain [(FA‐c‐(DTX‐g‐DAC)] and an ultrasound‐assisted Fe3O4 coating approach to fabricate [FA‐c‐(C‐DTX)@Fe3O4]. Magnetic nanoparticles (NPs) (Fe3O4 NPs) synthesis and integration has been easily and rapidly approached under novel environmentally friendly optimized reaction conditions: an ethanol–water solution, one iron precursor use, short reaction time, low temperature, and an ultrasonic irradiation process. This new condition's unique combination is attributed to our new synthesis procedure. Sonochemically synthetisized [FA‐c‐(C‐DTX)@Fe3O4] were easily separated from the reaction mixture simply via external magnetic field application, and therefore, neither filtration nor centrifigation was required. The synthetisized samples have been investigated by Fourier transform infrared (FTIR) spectroscopy, nuclear magnetic resonance (NMR) spectroscopy, X‐ray photoelectron spectroscopy (XPS), X‐ray diffraction (XRD), thermogravimetry analysis (TGA), scanning electron microscopy (SEM), and vibrating‐sample magnetometry (VSM). Obtained outcomes including successful magnetite coating process, good crystallinity, homogenous morphology, enhanced thermal stability, and obvious magnetic properties suggested the potential of sonochemical procedure to fabricate and integrate magnetic NPs. This sonochemically synthesized catalyst was evaluated toward the reduction of the organic pollutant 4‐nitrophenol and showed excellent catalytic activity. This ultrasound‐assisted nanocomposites preparation is simply scalable to meet industrial application.

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The synergistic effect of ultrasound power and magnetite incorporation on the sorption/desorption behavior of Cr(VI) and As(V) oxoanions in an aqueous system

Cited by 75 publications

References 38 publications

Basic Economic Analysis for Sonochemical Processes

Basic Economic Analysis for Sonochemical Processes

Recent Advances in Magnetic Nanoparticles and Nanocomposites for the Remediation of Water Resources

New sonochemical magnetite nanoparticles functionalization approach of dithiooxamide–formaldehyde developed cellulose: From easy synthesis to recyclable 4‐nitrophenol reduction

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